ac: fix get_image_coords() for radeonsi
[mesa.git] / src / amd / common / ac_nir_to_llvm.c
index e4ae6ef49ad608fedcd445705b0294f8f659ef22..a3f26ab46c98940ca5c8c86bf30ee03b595669f4 100644 (file)
@@ -27,6 +27,7 @@
 #include "ac_binary.h"
 #include "sid.h"
 #include "nir/nir.h"
+#include "nir/nir_deref.h"
 #include "util/bitscan.h"
 #include "util/u_math.h"
 #include "ac_shader_abi.h"
@@ -53,7 +54,7 @@ struct ac_nir_context {
 };
 
 static LLVMValueRef get_sampler_desc(struct ac_nir_context *ctx,
-                                    const nir_deref_var *deref,
+                                    nir_deref_instr *deref_instr,
                                     enum ac_descriptor_type desc_type,
                                     const nir_tex_instr *instr,
                                     bool image, bool write);
@@ -417,10 +418,24 @@ static LLVMValueRef emit_bitfield_extract(struct ac_llvm_context *ctx,
                                          const LLVMValueRef srcs[3])
 {
        LLVMValueRef result;
-       LLVMValueRef icond = LLVMBuildICmp(ctx->builder, LLVMIntEQ, srcs[2], LLVMConstInt(ctx->i32, 32, false), "");
 
-       result = ac_build_bfe(ctx, srcs[0], srcs[1], srcs[2], is_signed);
-       result = LLVMBuildSelect(ctx->builder, icond, srcs[0], result, "");
+       if (HAVE_LLVM < 0x0700) {
+               LLVMValueRef icond = LLVMBuildICmp(ctx->builder, LLVMIntEQ, srcs[2], LLVMConstInt(ctx->i32, 32, false), "");
+               result = ac_build_bfe(ctx, srcs[0], srcs[1], srcs[2], is_signed);
+               result = LLVMBuildSelect(ctx->builder, icond, srcs[0], result, "");
+       } else {
+               /* FIXME: LLVM 7 returns incorrect result when count is 0.
+                * https://bugs.freedesktop.org/show_bug.cgi?id=107276
+                */
+               LLVMValueRef zero = ctx->i32_0;
+               LLVMValueRef icond1 = LLVMBuildICmp(ctx->builder, LLVMIntEQ, srcs[2], LLVMConstInt(ctx->i32, 32, false), "");
+               LLVMValueRef icond2 = LLVMBuildICmp(ctx->builder, LLVMIntEQ, srcs[2], zero, "");
+
+               result = ac_build_bfe(ctx, srcs[0], srcs[1], srcs[2], is_signed);
+               result = LLVMBuildSelect(ctx->builder, icond1, srcs[0], result, "");
+               result = LLVMBuildSelect(ctx->builder, icond2, zero, result, "");
+       }
+
        return result;
 }
 
@@ -463,14 +478,15 @@ static LLVMValueRef emit_pack_half_2x16(struct ac_llvm_context *ctx,
        comp[0] = LLVMBuildExtractElement(ctx->builder, src0, ctx->i32_0, "");
        comp[1] = LLVMBuildExtractElement(ctx->builder, src0, ctx->i32_1, "");
 
-       return ac_build_cvt_pkrtz_f16(ctx, comp);
+       return LLVMBuildBitCast(ctx->builder, ac_build_cvt_pkrtz_f16(ctx, comp),
+                               ctx->i32, "");
 }
 
 static LLVMValueRef emit_unpack_half_2x16(struct ac_llvm_context *ctx,
                                          LLVMValueRef src0)
 {
        LLVMValueRef const16 = LLVMConstInt(ctx->i32, 16, false);
-       LLVMValueRef temps[2], result, val;
+       LLVMValueRef temps[2], val;
        int i;
 
        for (i = 0; i < 2; i++) {
@@ -479,12 +495,7 @@ static LLVMValueRef emit_unpack_half_2x16(struct ac_llvm_context *ctx,
                val = LLVMBuildBitCast(ctx->builder, val, ctx->f16, "");
                temps[i] = LLVMBuildFPExt(ctx->builder, val, ctx->f32, "");
        }
-
-       result = LLVMBuildInsertElement(ctx->builder, LLVMGetUndef(ctx->v2f32), temps[0],
-                                       ctx->i32_0, "");
-       result = LLVMBuildInsertElement(ctx->builder, result, temps[1],
-                                       ctx->i32_1, "");
-       return result;
+       return ac_build_gather_values(ctx, temps, 2);
 }
 
 static LLVMValueRef emit_ddxy(struct ac_nir_context *ctx,
@@ -842,34 +853,47 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
                        src[i] = ac_to_integer(&ctx->ac, src[i]);
                result = ac_build_gather_values(&ctx->ac, src, num_components);
                break;
+       case nir_op_f2i16:
        case nir_op_f2i32:
        case nir_op_f2i64:
                src[0] = ac_to_float(&ctx->ac, src[0]);
                result = LLVMBuildFPToSI(ctx->ac.builder, src[0], def_type, "");
                break;
+       case nir_op_f2u16:
        case nir_op_f2u32:
        case nir_op_f2u64:
                src[0] = ac_to_float(&ctx->ac, src[0]);
                result = LLVMBuildFPToUI(ctx->ac.builder, src[0], def_type, "");
                break;
+       case nir_op_i2f16:
        case nir_op_i2f32:
        case nir_op_i2f64:
                src[0] = ac_to_integer(&ctx->ac, src[0]);
                result = LLVMBuildSIToFP(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
                break;
+       case nir_op_u2f16:
        case nir_op_u2f32:
        case nir_op_u2f64:
                src[0] = ac_to_integer(&ctx->ac, src[0]);
                result = LLVMBuildUIToFP(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
                break;
-       case nir_op_f2f64:
+       case nir_op_f2f16_rtz:
                src[0] = ac_to_float(&ctx->ac, src[0]);
-               result = LLVMBuildFPExt(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
+               LLVMValueRef param[2] = { src[0], ctx->ac.f32_0 };
+               result = ac_build_cvt_pkrtz_f16(&ctx->ac, param);
+               result = LLVMBuildExtractElement(ctx->ac.builder, result, ctx->ac.i32_0, "");
                break;
+       case nir_op_f2f16_rtne:
+       case nir_op_f2f16:
        case nir_op_f2f32:
+       case nir_op_f2f64:
                src[0] = ac_to_float(&ctx->ac, src[0]);
-               result = LLVMBuildFPTrunc(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
+               if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])) < ac_get_elem_bits(&ctx->ac, def_type))
+                       result = LLVMBuildFPExt(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
+               else
+                       result = LLVMBuildFPTrunc(ctx->ac.builder, src[0], ac_to_float_type(&ctx->ac, def_type), "");
                break;
+       case nir_op_u2u16:
        case nir_op_u2u32:
        case nir_op_u2u64:
                src[0] = ac_to_integer(&ctx->ac, src[0]);
@@ -878,6 +902,7 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
                else
                        result = LLVMBuildTrunc(ctx->ac.builder, src[0], def_type, "");
                break;
+       case nir_op_i2i16:
        case nir_op_i2i32:
        case nir_op_i2i64:
                src[0] = ac_to_integer(&ctx->ac, src[0]);
@@ -974,10 +999,7 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
 
        case nir_op_pack_64_2x32_split: {
                LLVMValueRef tmp = LLVMGetUndef(ctx->ac.v2i32);
-               tmp = LLVMBuildInsertElement(ctx->ac.builder, tmp,
-                                            src[0], ctx->ac.i32_0, "");
-               tmp = LLVMBuildInsertElement(ctx->ac.builder, tmp,
-                                            src[1], ctx->ac.i32_1, "");
+               tmp = ac_build_gather_values(&ctx->ac, src, 2);
                result = LLVMBuildBitCast(ctx->ac.builder, tmp, ctx->ac.i64, "");
                break;
        }
@@ -1083,6 +1105,10 @@ static void visit_load_const(struct ac_nir_context *ctx,
 
        for (unsigned i = 0; i < instr->def.num_components; ++i) {
                switch (instr->def.bit_size) {
+               case 16:
+                       values[i] = LLVMConstInt(element_type,
+                                                instr->value.u16[i], false);
+                       break;
                case 32:
                        values[i] = LLVMConstInt(element_type,
                                                 instr->value.u32[i], false);
@@ -1133,10 +1159,12 @@ get_buffer_size(struct ac_nir_context *ctx, LLVMValueRef descriptor, bool in_ele
 }
 
 static LLVMValueRef lower_gather4_integer(struct ac_llvm_context *ctx,
+                                         nir_variable *var,
                                          struct ac_image_args *args,
                                          const nir_tex_instr *instr)
 {
-       enum glsl_base_type stype = glsl_get_sampler_result_type(instr->texture->var->type);
+       const struct glsl_type *type = glsl_without_array(var->type);
+       enum glsl_base_type stype = glsl_get_sampler_result_type(type);
        LLVMValueRef half_texel[2];
        LLVMValueRef compare_cube_wa = NULL;
        LLVMValueRef result;
@@ -1243,6 +1271,22 @@ static LLVMValueRef lower_gather4_integer(struct ac_llvm_context *ctx,
        return result;
 }
 
+static nir_deref_instr *get_tex_texture_deref(const nir_tex_instr *instr)
+{
+       nir_deref_instr *texture_deref_instr = NULL;
+
+       for (unsigned i = 0; i < instr->num_srcs; i++) {
+               switch (instr->src[i].src_type) {
+               case nir_tex_src_texture_deref:
+                       texture_deref_instr = nir_src_as_deref(instr->src[i].src);
+                       break;
+               default:
+                       break;
+               }
+       }
+       return texture_deref_instr;
+}
+
 static LLVMValueRef build_tex_intrinsic(struct ac_nir_context *ctx,
                                        const nir_tex_instr *instr,
                                        struct ac_image_args *args)
@@ -1303,9 +1347,12 @@ static LLVMValueRef build_tex_intrinsic(struct ac_nir_context *ctx,
        }
 
        if (instr->op == nir_texop_tg4 && ctx->ac.chip_class <= VI) {
-               enum glsl_base_type stype = glsl_get_sampler_result_type(instr->texture->var->type);
+               nir_deref_instr *texture_deref_instr = get_tex_texture_deref(instr);
+               nir_variable *var = nir_deref_instr_get_variable(texture_deref_instr);
+               const struct glsl_type *type = glsl_without_array(var->type);
+               enum glsl_base_type stype = glsl_get_sampler_result_type(type);
                if (stype == GLSL_TYPE_UINT || stype == GLSL_TYPE_INT) {
-                       return lower_gather4_integer(&ctx->ac, args, instr);
+                       return lower_gather4_integer(&ctx->ac, var, args, instr);
                }
        }
 
@@ -1342,6 +1389,26 @@ static LLVMValueRef visit_load_push_constant(struct ac_nir_context *ctx,
                            get_src(ctx, instr->src[0]), "");
 
        ptr = ac_build_gep0(&ctx->ac, ctx->abi->push_constants, addr);
+
+       if (instr->dest.ssa.bit_size == 16) {
+               unsigned load_dwords = instr->dest.ssa.num_components / 2 + 1;
+               LLVMTypeRef vec_type = LLVMVectorType(LLVMInt16Type(), 2 * load_dwords);
+               ptr = ac_cast_ptr(&ctx->ac, ptr, vec_type);
+               LLVMValueRef res = LLVMBuildLoad(ctx->ac.builder, ptr, "");
+               res = LLVMBuildBitCast(ctx->ac.builder, res, vec_type, "");
+               LLVMValueRef cond = LLVMBuildLShr(ctx->ac.builder, addr, ctx->ac.i32_1, "");
+               cond = LLVMBuildTrunc(ctx->ac.builder, cond, ctx->ac.i1, "");
+               LLVMValueRef mask[] = { LLVMConstInt(ctx->ac.i32, 0, false), LLVMConstInt(ctx->ac.i32, 1, false),
+                                       LLVMConstInt(ctx->ac.i32, 2, false), LLVMConstInt(ctx->ac.i32, 3, false),
+                                       LLVMConstInt(ctx->ac.i32, 4, false)};
+               LLVMValueRef swizzle_aligned = LLVMConstVector(&mask[0], instr->dest.ssa.num_components);
+               LLVMValueRef swizzle_unaligned = LLVMConstVector(&mask[1], instr->dest.ssa.num_components);
+               LLVMValueRef shuffle_aligned = LLVMBuildShuffleVector(ctx->ac.builder, res, res, swizzle_aligned, "");
+               LLVMValueRef shuffle_unaligned = LLVMBuildShuffleVector(ctx->ac.builder, res, res, swizzle_unaligned, "");
+               res = LLVMBuildSelect(ctx->ac.builder, cond, shuffle_unaligned, shuffle_aligned, "");
+               return LLVMBuildBitCast(ctx->ac.builder, res, get_def_type(ctx, &instr->dest.ssa), "");
+       }
+
        ptr = ac_cast_ptr(&ctx->ac, ptr, get_def_type(ctx, &instr->dest.ssa));
 
        return LLVMBuildLoad(ctx->ac.builder, ptr, "");
@@ -1367,31 +1434,24 @@ static uint32_t widen_mask(uint32_t mask, unsigned multiplier)
 static LLVMValueRef extract_vector_range(struct ac_llvm_context *ctx, LLVMValueRef src,
                                          unsigned start, unsigned count)
 {
-       LLVMTypeRef type = LLVMTypeOf(src);
+       LLVMValueRef mask[] = {
+       ctx->i32_0, ctx->i32_1,
+       LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false) };
+
+       unsigned src_elements = ac_get_llvm_num_components(src);
 
-       if (LLVMGetTypeKind(type) != LLVMVectorTypeKind) {
+       if (count == src_elements) {
                assert(start == 0);
-               assert(count == 1);
                return src;
+       } else if (count == 1) {
+               assert(start < src_elements);
+               return LLVMBuildExtractElement(ctx->builder, src, mask[start],  "");
+       } else {
+               assert(start + count <= src_elements);
+               assert(count <= 4);
+               LLVMValueRef swizzle = LLVMConstVector(&mask[start], count);
+               return LLVMBuildShuffleVector(ctx->builder, src, src, swizzle, "");
        }
-
-       unsigned src_elements = LLVMGetVectorSize(type);
-       assert(start < src_elements);
-       assert(start + count <= src_elements);
-
-       if (start == 0 && count == src_elements)
-               return src;
-
-       if (count == 1)
-               return LLVMBuildExtractElement(ctx->builder, src, LLVMConstInt(ctx->i32, start, false), "");
-
-       assert(count <= 8);
-       LLVMValueRef indices[8];
-       for (unsigned i = 0; i < count; ++i)
-               indices[i] = LLVMConstInt(ctx->i32, start + i, false);
-
-       LLVMValueRef swizzle = LLVMConstVector(indices, count);
-       return LLVMBuildShuffleVector(ctx->builder, src, src, swizzle, "");
 }
 
 static void visit_store_ssbo(struct ac_nir_context *ctx,
@@ -1399,33 +1459,19 @@ static void visit_store_ssbo(struct ac_nir_context *ctx,
 {
        const char *store_name;
        LLVMValueRef src_data = get_src(ctx, instr->src[0]);
-       LLVMTypeRef data_type = ctx->ac.f32;
-       int elem_size_mult = ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src_data)) / 32;
-       int components_32bit = elem_size_mult * instr->num_components;
+       int elem_size_bytes = ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src_data)) / 8;
        unsigned writemask = nir_intrinsic_write_mask(instr);
-       LLVMValueRef base_data, base_offset;
-       LLVMValueRef params[6];
 
-       params[1] = ctx->abi->load_ssbo(ctx->abi,
+       LLVMValueRef rsrc = ctx->abi->load_ssbo(ctx->abi,
                                        get_src(ctx, instr->src[1]), true);
-       params[2] = ctx->ac.i32_0; /* vindex */
-       params[4] = ctx->ac.i1false;  /* glc */
-       params[5] = ctx->ac.i1false;  /* slc */
-
-       if (components_32bit > 1)
-               data_type = LLVMVectorType(ctx->ac.f32, components_32bit);
-
-       writemask = widen_mask(writemask, elem_size_mult);
-
-       base_data = ac_to_float(&ctx->ac, src_data);
+       LLVMValueRef base_data = ac_to_float(&ctx->ac, src_data);
        base_data = ac_trim_vector(&ctx->ac, base_data, instr->num_components);
-       base_data = LLVMBuildBitCast(ctx->ac.builder, base_data,
-                                    data_type, "");
-       base_offset = get_src(ctx, instr->src[2]);      /* voffset */
+       LLVMValueRef base_offset = get_src(ctx, instr->src[2]);
+
        while (writemask) {
                int start, count;
-               LLVMValueRef data;
-               LLVMValueRef offset;
+               LLVMValueRef data, offset;
+               LLVMTypeRef data_type;
 
                u_bit_scan_consecutive_range(&writemask, &start, &count);
 
@@ -1435,31 +1481,76 @@ static void visit_store_ssbo(struct ac_nir_context *ctx,
                        writemask |= 1 << (start + 2);
                        count = 2;
                }
+               int num_bytes = count * elem_size_bytes; /* count in bytes */
 
-               if (count > 4) {
-                       writemask |= ((1u << (count - 4)) - 1u) << (start + 4);
-                       count = 4;
+               /* we can only store 4 DWords at the same time.
+                * can only happen for 64 Bit vectors. */
+               if (num_bytes > 16) {
+                       writemask |= ((1u << (count - 2)) - 1u) << (start + 2);
+                       count = 2;
+                       num_bytes = 16;
                }
 
-               if (count == 4) {
-                       store_name = "llvm.amdgcn.buffer.store.v4f32";
-               } else if (count == 2) {
-                       store_name = "llvm.amdgcn.buffer.store.v2f32";
-
-               } else {
-                       assert(count == 1);
-                       store_name = "llvm.amdgcn.buffer.store.f32";
+               /* check alignment of 16 Bit stores */
+               if (elem_size_bytes == 2 && num_bytes > 2 && (start % 2) == 1) {
+                       writemask |= ((1u << (count - 1)) - 1u) << (start + 1);
+                       count = 1;
+                       num_bytes = 2;
                }
                data = extract_vector_range(&ctx->ac, base_data, start, count);
 
-               offset = base_offset;
-               if (start != 0) {
-                       offset = LLVMBuildAdd(ctx->ac.builder, offset, LLVMConstInt(ctx->ac.i32, start * 4, false), "");
+               if (start == 0) {
+                       offset = base_offset;
+               } else {
+                       offset = LLVMBuildAdd(ctx->ac.builder, base_offset,
+                                             LLVMConstInt(ctx->ac.i32, start * elem_size_bytes, false), "");
+               }
+               if (num_bytes == 2) {
+                       store_name = "llvm.amdgcn.tbuffer.store.i32";
+                       data_type = ctx->ac.i32;
+                       LLVMValueRef tbuffer_params[] = {
+                               data,
+                               rsrc,
+                               ctx->ac.i32_0, /* vindex */
+                               offset,        /* voffset */
+                               ctx->ac.i32_0,
+                               ctx->ac.i32_0,
+                               LLVMConstInt(ctx->ac.i32, 2, false), // dfmt (= 16bit)
+                               LLVMConstInt(ctx->ac.i32, 4, false), // nfmt (= uint)
+                               ctx->ac.i1false,
+                               ctx->ac.i1false,
+                       };
+                       ac_build_intrinsic(&ctx->ac, store_name,
+                                          ctx->ac.voidt, tbuffer_params, 10, 0);
+               } else {
+                       switch (num_bytes) {
+                       case 16: /* v4f32 */
+                               store_name = "llvm.amdgcn.buffer.store.v4f32";
+                               data_type = ctx->ac.v4f32;
+                               break;
+                       case 8: /* v2f32 */
+                               store_name = "llvm.amdgcn.buffer.store.v2f32";
+                               data_type = ctx->ac.v2f32;
+                               break;
+                       case 4: /* f32 */
+                               store_name = "llvm.amdgcn.buffer.store.f32";
+                               data_type = ctx->ac.f32;
+                               break;
+                       default:
+                               unreachable("Malformed vector store.");
+                       }
+                       data = LLVMBuildBitCast(ctx->ac.builder, data, data_type, "");
+                       LLVMValueRef params[] = {
+                               data,
+                               rsrc,
+                               ctx->ac.i32_0, /* vindex */
+                               offset,
+                               ctx->ac.i1false,  /* glc */
+                               ctx->ac.i1false,  /* slc */
+                       };
+                       ac_build_intrinsic(&ctx->ac, store_name,
+                                          ctx->ac.voidt, params, 6, 0);
                }
-               params[0] = data;
-               params[3] = offset;
-               ac_build_intrinsic(&ctx->ac, store_name,
-                                  ctx->ac.voidt, params, 6, 0);
        }
 }
 
@@ -1523,58 +1614,78 @@ static LLVMValueRef visit_load_buffer(struct ac_nir_context *ctx,
                                       const nir_intrinsic_instr *instr)
 {
        LLVMValueRef results[2];
-       int load_components;
+       int load_bytes;
+       int elem_size_bytes = instr->dest.ssa.bit_size / 8;
        int num_components = instr->num_components;
-       if (instr->dest.ssa.bit_size == 64)
-               num_components *= 2;
+       int num_bytes = num_components * elem_size_bytes;
 
-       for (int i = 0; i < num_components; i += load_components) {
-               load_components = MIN2(num_components - i, 4);
+       for (int i = 0; i < num_bytes; i += load_bytes) {
+               load_bytes = MIN2(num_bytes - i, 16);
                const char *load_name;
-               LLVMTypeRef data_type = ctx->ac.f32;
-               LLVMValueRef offset = LLVMConstInt(ctx->ac.i32, i * 4, false);
-               offset = LLVMBuildAdd(ctx->ac.builder, get_src(ctx, instr->src[1]), offset, "");
-
-               if (load_components == 3)
-                       data_type = LLVMVectorType(ctx->ac.f32, 4);
-               else if (load_components > 1)
-                       data_type = LLVMVectorType(ctx->ac.f32, load_components);
-
-               if (load_components >= 3)
-                       load_name = "llvm.amdgcn.buffer.load.v4f32";
-               else if (load_components == 2)
-                       load_name = "llvm.amdgcn.buffer.load.v2f32";
-               else if (load_components == 1)
-                       load_name = "llvm.amdgcn.buffer.load.f32";
-               else
-                       unreachable("unhandled number of components");
-
-               LLVMValueRef params[] = {
-                       ctx->abi->load_ssbo(ctx->abi,
-                                           get_src(ctx, instr->src[0]),
-                                           false),
-                       ctx->ac.i32_0,
-                       offset,
-                       ctx->ac.i1false,
-                       ctx->ac.i1false,
-               };
-
-               results[i > 0 ? 1 : 0] = ac_build_intrinsic(&ctx->ac, load_name, data_type, params, 5, 0);
+               LLVMTypeRef data_type;
+               LLVMValueRef offset = get_src(ctx, instr->src[1]);
+               LLVMValueRef immoffset = LLVMConstInt(ctx->ac.i32, i, false);
+               LLVMValueRef rsrc = ctx->abi->load_ssbo(ctx->abi,
+                                                       get_src(ctx, instr->src[0]), false);
+               LLVMValueRef vindex = ctx->ac.i32_0;
+
+               int idx = i ? 1 : 0;
+               if (load_bytes == 2) {
+                       results[idx] = ac_build_tbuffer_load_short(&ctx->ac,
+                                                                  rsrc,
+                                                                  vindex,
+                                                                  offset,
+                                                                  ctx->ac.i32_0,
+                                                                  immoffset);
+               } else {
+                       switch (load_bytes) {
+                       case 16:
+                       case 12:
+                               load_name = "llvm.amdgcn.buffer.load.v4f32";
+                               data_type = ctx->ac.v4f32;
+                               break;
+                       case 8:
+                       case 6:
+                               load_name = "llvm.amdgcn.buffer.load.v2f32";
+                               data_type = ctx->ac.v2f32;
+                               break;
+                       case 4:
+                               load_name = "llvm.amdgcn.buffer.load.f32";
+                               data_type = ctx->ac.f32;
+                               break;
+                       default:
+                               unreachable("Malformed load buffer.");
+                       }
+                       LLVMValueRef params[] = {
+                               rsrc,
+                               vindex,
+                               LLVMBuildAdd(ctx->ac.builder, offset, immoffset, ""),
+                               ctx->ac.i1false,
+                               ctx->ac.i1false,
+                       };
+                       results[idx] = ac_build_intrinsic(&ctx->ac, load_name, data_type, params, 5, 0);
+                       unsigned num_elems = ac_get_type_size(data_type) / elem_size_bytes;
+                       LLVMTypeRef resTy = LLVMVectorType(LLVMIntType(instr->dest.ssa.bit_size), num_elems);
+                       results[idx] = LLVMBuildBitCast(ctx->ac.builder, results[idx], resTy, "");
+               }
        }
 
        assume(results[0]);
        LLVMValueRef ret = results[0];
-       if (num_components > 4 || num_components == 3) {
+       if (num_bytes > 16 || num_components == 3) {
                LLVMValueRef masks[] = {
                        LLVMConstInt(ctx->ac.i32, 0, false), LLVMConstInt(ctx->ac.i32, 1, false),
                        LLVMConstInt(ctx->ac.i32, 2, false), LLVMConstInt(ctx->ac.i32, 3, false),
-                       LLVMConstInt(ctx->ac.i32, 4, false), LLVMConstInt(ctx->ac.i32, 5, false),
-                       LLVMConstInt(ctx->ac.i32, 6, false), LLVMConstInt(ctx->ac.i32, 7, false)
                };
 
+               if (num_bytes > 16 && num_components == 3) {
+                       /* we end up with a v4f32 and v2f32 but shuffle fails on that */
+                       results[1] = ac_build_expand_to_vec4(&ctx->ac, results[1], 2);
+               }
+
                LLVMValueRef swizzle = LLVMConstVector(masks, num_components);
                ret = LLVMBuildShuffleVector(ctx->ac.builder, results[0],
-                                            results[num_components > 4 ? 1 : 0], swizzle, "");
+                                            results[num_bytes > 16 ? 1 : 0], swizzle, "");
        }
 
        return LLVMBuildBitCast(ctx->ac.builder, ret,
@@ -1595,83 +1706,88 @@ static LLVMValueRef visit_load_ubo_buffer(struct ac_nir_context *ctx,
        if (instr->dest.ssa.bit_size == 64)
                num_components *= 2;
 
-       ret = ac_build_buffer_load(&ctx->ac, rsrc, num_components, NULL, offset,
-                                  NULL, 0, false, false, true, true);
-       ret = ac_trim_vector(&ctx->ac, ret, num_components);
+       if (instr->dest.ssa.bit_size == 16) {
+               LLVMValueRef results[num_components];
+               for (unsigned i = 0; i < num_components; ++i) {
+                       results[i] = ac_build_tbuffer_load_short(&ctx->ac,
+                                                                rsrc,
+                                                                ctx->ac.i32_0,
+                                                                offset,
+                                                                ctx->ac.i32_0,
+                                                                LLVMConstInt(ctx->ac.i32, 2 * i, 0));
+               }
+               ret = ac_build_gather_values(&ctx->ac, results, num_components);
+       } else {
+               ret = ac_build_buffer_load(&ctx->ac, rsrc, num_components, NULL, offset,
+                                          NULL, 0, false, false, true, true);
+
+               ret = ac_trim_vector(&ctx->ac, ret, num_components);
+       }
+
        return LLVMBuildBitCast(ctx->ac.builder, ret,
                                get_def_type(ctx, &instr->dest.ssa), "");
 }
 
 static void
-get_deref_offset(struct ac_nir_context *ctx, nir_deref_var *deref,
-                bool vs_in, unsigned *vertex_index_out,
-                LLVMValueRef *vertex_index_ref,
-                unsigned *const_out, LLVMValueRef *indir_out)
+get_deref_offset(struct ac_nir_context *ctx, nir_deref_instr *instr,
+                 bool vs_in, unsigned *vertex_index_out,
+                 LLVMValueRef *vertex_index_ref,
+                 unsigned *const_out, LLVMValueRef *indir_out)
 {
-       unsigned const_offset = 0;
-       nir_deref *tail = &deref->deref;
-       LLVMValueRef offset = NULL;
+       nir_variable *var = nir_deref_instr_get_variable(instr);
+       nir_deref_path path;
+       unsigned idx_lvl = 1;
 
-       if (vertex_index_out != NULL || vertex_index_ref != NULL) {
-               tail = tail->child;
-               nir_deref_array *deref_array = nir_deref_as_array(tail);
-               if (vertex_index_out)
-                       *vertex_index_out = deref_array->base_offset;
+       nir_deref_path_init(&path, instr, NULL);
 
+       if (vertex_index_out != NULL || vertex_index_ref != NULL) {
                if (vertex_index_ref) {
-                       LLVMValueRef vtx = LLVMConstInt(ctx->ac.i32, deref_array->base_offset, false);
-                       if (deref_array->deref_array_type == nir_deref_array_type_indirect) {
-                               vtx = LLVMBuildAdd(ctx->ac.builder, vtx, get_src(ctx, deref_array->indirect), "");
-                       }
-                       *vertex_index_ref = vtx;
+                       *vertex_index_ref = get_src(ctx, path.path[idx_lvl]->arr.index);
+                       if (vertex_index_out)
+                               *vertex_index_out = 0;
+               } else {
+                       nir_const_value *v = nir_src_as_const_value(path.path[idx_lvl]->arr.index);
+                       assert(v);
+                       *vertex_index_out = v->u32[0];
                }
+               ++idx_lvl;
        }
 
-       if (deref->var->data.compact) {
-               assert(tail->child->deref_type == nir_deref_type_array);
-               assert(glsl_type_is_scalar(glsl_without_array(deref->var->type)));
-               nir_deref_array *deref_array = nir_deref_as_array(tail->child);
-               /* We always lower indirect dereferences for "compact" array vars. */
-               assert(deref_array->deref_array_type == nir_deref_array_type_direct);
+       uint32_t const_offset = 0;
+       LLVMValueRef offset = NULL;
 
-               const_offset = deref_array->base_offset;
+       if (var->data.compact) {
+               assert(instr->deref_type == nir_deref_type_array);
+               nir_const_value *v = nir_src_as_const_value(instr->arr.index);
+               assert(v);
+               const_offset = v->u32[0];
                goto out;
        }
 
-       while (tail->child != NULL) {
-               const struct glsl_type *parent_type = tail->type;
-               tail = tail->child;
-
-               if (tail->deref_type == nir_deref_type_array) {
-                       nir_deref_array *deref_array = nir_deref_as_array(tail);
-                       LLVMValueRef index, stride, local_offset;
-                       unsigned size = glsl_count_attribute_slots(tail->type, vs_in);
-
-                       const_offset += size * deref_array->base_offset;
-                       if (deref_array->deref_array_type == nir_deref_array_type_direct)
-                               continue;
+       for (; path.path[idx_lvl]; ++idx_lvl) {
+               const struct glsl_type *parent_type = path.path[idx_lvl - 1]->type;
+               if (path.path[idx_lvl]->deref_type == nir_deref_type_struct) {
+                       unsigned index = path.path[idx_lvl]->strct.index;
 
-                       assert(deref_array->deref_array_type == nir_deref_array_type_indirect);
-                       index = get_src(ctx, deref_array->indirect);
-                       stride = LLVMConstInt(ctx->ac.i32, size, 0);
-                       local_offset = LLVMBuildMul(ctx->ac.builder, stride, index, "");
-
-                       if (offset)
-                               offset = LLVMBuildAdd(ctx->ac.builder, offset, local_offset, "");
-                       else
-                               offset = local_offset;
-               } else if (tail->deref_type == nir_deref_type_struct) {
-                       nir_deref_struct *deref_struct = nir_deref_as_struct(tail);
-
-                       for (unsigned i = 0; i < deref_struct->index; i++) {
+                       for (unsigned i = 0; i < index; i++) {
                                const struct glsl_type *ft = glsl_get_struct_field(parent_type, i);
                                const_offset += glsl_count_attribute_slots(ft, vs_in);
                        }
+               } else if(path.path[idx_lvl]->deref_type == nir_deref_type_array) {
+                       unsigned size = glsl_count_attribute_slots(path.path[idx_lvl]->type, vs_in);
+                       LLVMValueRef array_off = LLVMBuildMul(ctx->ac.builder, LLVMConstInt(ctx->ac.i32, size, 0),
+                                                             get_src(ctx, path.path[idx_lvl]->arr.index), "");
+                       if (offset)
+                               offset = LLVMBuildAdd(ctx->ac.builder, offset, array_off, "");
+                       else
+                               offset = array_off;
                } else
-                       unreachable("unsupported deref type");
-
+                       unreachable("Uhandled deref type in get_deref_instr_offset");
        }
+
 out:
+       nir_deref_path_finish(&path);
+
        if (const_offset && offset)
                offset = LLVMBuildAdd(ctx->ac.builder, offset,
                                      LLVMConstInt(ctx->ac.i32, const_offset, 0),
@@ -1681,45 +1797,6 @@ out:
        *indir_out = offset;
 }
 
-static LLVMValueRef
-build_gep_for_deref(struct ac_nir_context *ctx,
-                   nir_deref_var *deref)
-{
-       struct hash_entry *entry = _mesa_hash_table_search(ctx->vars, deref->var);
-       assert(entry->data);
-       LLVMValueRef val = entry->data;
-       nir_deref *tail = deref->deref.child;
-       while (tail != NULL) {
-               LLVMValueRef offset;
-               switch (tail->deref_type) {
-               case nir_deref_type_array: {
-                       nir_deref_array *array = nir_deref_as_array(tail);
-                       offset = LLVMConstInt(ctx->ac.i32, array->base_offset, 0);
-                       if (array->deref_array_type ==
-                           nir_deref_array_type_indirect) {
-                               offset = LLVMBuildAdd(ctx->ac.builder, offset,
-                                                     get_src(ctx,
-                                                             array->indirect),
-                                                     "");
-                       }
-                       break;
-               }
-               case nir_deref_type_struct: {
-                       nir_deref_struct *deref_struct =
-                               nir_deref_as_struct(tail);
-                       offset = LLVMConstInt(ctx->ac.i32,
-                                             deref_struct->index, 0);
-                       break;
-               }
-               default:
-                       unreachable("bad deref type");
-               }
-               val = ac_build_gep0(&ctx->ac, val, offset);
-               tail = tail->child;
-       }
-       return val;
-}
-
 static LLVMValueRef load_tess_varyings(struct ac_nir_context *ctx,
                                       nir_intrinsic_instr *instr,
                                       bool load_inputs)
@@ -1728,14 +1805,17 @@ static LLVMValueRef load_tess_varyings(struct ac_nir_context *ctx,
        LLVMValueRef vertex_index = NULL;
        LLVMValueRef indir_index = NULL;
        unsigned const_index = 0;
-       unsigned location = instr->variables[0]->var->data.location;
-       unsigned driver_location = instr->variables[0]->var->data.driver_location;
-       const bool is_patch =  instr->variables[0]->var->data.patch;
-       const bool is_compact = instr->variables[0]->var->data.compact;
 
-       get_deref_offset(ctx, instr->variables[0],
-                        false, NULL, is_patch ? NULL : &vertex_index,
-                        &const_index, &indir_index);
+       nir_variable *var = nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
+
+       unsigned location = var->data.location;
+       unsigned driver_location = var->data.driver_location;
+       const bool is_patch =  var->data.patch;
+       const bool is_compact = var->data.compact;
+
+       get_deref_offset(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr),
+                        false, NULL, is_patch ? NULL : &vertex_index,
+                        &const_index, &indir_index);
 
        LLVMTypeRef dest_type = get_def_type(ctx, &instr->dest.ssa);
 
@@ -1748,32 +1828,39 @@ static LLVMValueRef load_tess_varyings(struct ac_nir_context *ctx,
        result = ctx->abi->load_tess_varyings(ctx->abi, src_component_type,
                                              vertex_index, indir_index,
                                              const_index, location, driver_location,
-                                             instr->variables[0]->var->data.location_frac,
+                                             var->data.location_frac,
                                              instr->num_components,
                                              is_patch, is_compact, load_inputs);
+       if (instr->dest.ssa.bit_size == 16) {
+               result = ac_to_integer(&ctx->ac, result);
+               result = LLVMBuildTrunc(ctx->ac.builder, result, dest_type, "");
+       }
        return LLVMBuildBitCast(ctx->ac.builder, result, dest_type, "");
 }
 
 static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
                                   nir_intrinsic_instr *instr)
 {
+       nir_variable *var = nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
+
        LLVMValueRef values[8];
-       int idx = instr->variables[0]->var->data.driver_location;
+       int idx = var->data.driver_location;
        int ve = instr->dest.ssa.num_components;
-       unsigned comp = instr->variables[0]->var->data.location_frac;
+       unsigned comp = var->data.location_frac;
        LLVMValueRef indir_index;
        LLVMValueRef ret;
        unsigned const_index;
-       unsigned stride = instr->variables[0]->var->data.compact ? 1 : 4;
+       unsigned stride = var->data.compact ? 1 : 4;
        bool vs_in = ctx->stage == MESA_SHADER_VERTEX &&
-                    instr->variables[0]->var->data.mode == nir_var_shader_in;
-       get_deref_offset(ctx, instr->variables[0], vs_in, NULL, NULL,
-                                     &const_index, &indir_index);
+                    var->data.mode == nir_var_shader_in;
+
+       get_deref_offset(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr), vs_in, NULL, NULL,
+                        &const_index, &indir_index);
 
        if (instr->dest.ssa.bit_size == 64)
                ve *= 2;
 
-       switch (instr->variables[0]->var->data.mode) {
+       switch (var->data.mode) {
        case nir_var_shader_in:
                if (ctx->stage == MESA_SHADER_TESS_CTRL ||
                    ctx->stage == MESA_SHADER_TESS_EVAL) {
@@ -1784,20 +1871,19 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
                        LLVMTypeRef type = LLVMIntTypeInContext(ctx->ac.context, instr->dest.ssa.bit_size);
                        LLVMValueRef indir_index;
                        unsigned const_index, vertex_index;
-                       get_deref_offset(ctx, instr->variables[0],
-                                        false, &vertex_index, NULL,
-                                        &const_index, &indir_index);
+                       get_deref_offset(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr),
+                                        false, &vertex_index, NULL, &const_index, &indir_index);
 
-                       return ctx->abi->load_inputs(ctx->abi, instr->variables[0]->var->data.location,
-                                                    instr->variables[0]->var->data.driver_location,
-                                                    instr->variables[0]->var->data.location_frac,
+                       return ctx->abi->load_inputs(ctx->abi, var->data.location,
+                                                    var->data.driver_location,
+                                                    var->data.location_frac,
                                                     instr->num_components, vertex_index, const_index, type);
                }
 
                for (unsigned chan = comp; chan < ve + comp; chan++) {
                        if (indir_index) {
                                unsigned count = glsl_count_attribute_slots(
-                                               instr->variables[0]->var->type,
+                                               var->type,
                                                ctx->stage == MESA_SHADER_VERTEX);
                                count -= chan / 4;
                                LLVMValueRef tmp_vec = ac_build_gather_values_extended(
@@ -1815,7 +1901,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
                for (unsigned chan = 0; chan < ve; chan++) {
                        if (indir_index) {
                                unsigned count = glsl_count_attribute_slots(
-                                       instr->variables[0]->var->type, false);
+                                       var->type, false);
                                count -= chan / 4;
                                LLVMValueRef tmp_vec = ac_build_gather_values_extended(
                                                &ctx->ac, ctx->locals + idx + chan, count,
@@ -1830,8 +1916,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
                }
                break;
        case nir_var_shared: {
-               LLVMValueRef address = build_gep_for_deref(ctx,
-                                                          instr->variables[0]);
+               LLVMValueRef address = get_src(ctx, instr->src[0]);
                LLVMValueRef val = LLVMBuildLoad(ctx->ac.builder, address, "");
                return LLVMBuildBitCast(ctx->ac.builder, val,
                                        get_def_type(ctx, &instr->dest.ssa),
@@ -1845,7 +1930,7 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
                for (unsigned chan = comp; chan < ve + comp; chan++) {
                        if (indir_index) {
                                unsigned count = glsl_count_attribute_slots(
-                                               instr->variables[0]->var->type, false);
+                                               var->type, false);
                                count -= chan / 4;
                                LLVMValueRef tmp_vec = ac_build_gather_values_extended(
                                                &ctx->ac, ctx->abi->outputs + idx + chan, count,
@@ -1872,15 +1957,18 @@ static void
 visit_store_var(struct ac_nir_context *ctx,
                nir_intrinsic_instr *instr)
 {
+        nir_variable *var = nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
+
        LLVMValueRef temp_ptr, value;
-       int idx = instr->variables[0]->var->data.driver_location;
-       unsigned comp = instr->variables[0]->var->data.location_frac;
-       LLVMValueRef src = ac_to_float(&ctx->ac, get_src(ctx, instr->src[0]));
+       int idx = var->data.driver_location;
+       unsigned comp = var->data.location_frac;
+       LLVMValueRef src = ac_to_float(&ctx->ac, get_src(ctx, instr->src[1]));
        int writemask = instr->const_index[0];
        LLVMValueRef indir_index;
        unsigned const_index;
-       get_deref_offset(ctx, instr->variables[0], false,
-                        NULL, NULL, &const_index, &indir_index);
+
+       get_deref_offset(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr), false,
+                        NULL, NULL, &const_index, &indir_index);
 
        if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src)) == 64) {
 
@@ -1893,20 +1981,20 @@ visit_store_var(struct ac_nir_context *ctx,
 
        writemask = writemask << comp;
 
-       switch (instr->variables[0]->var->data.mode) {
+       switch (var->data.mode) {
        case nir_var_shader_out:
 
                if (ctx->stage == MESA_SHADER_TESS_CTRL) {
                        LLVMValueRef vertex_index = NULL;
                        LLVMValueRef indir_index = NULL;
                        unsigned const_index = 0;
-                       const bool is_patch = instr->variables[0]->var->data.patch;
+                       const bool is_patch = var->data.patch;
 
-                       get_deref_offset(ctx, instr->variables[0],
-                                        false, NULL, is_patch ? NULL : &vertex_index,
-                                        &const_index, &indir_index);
+                       get_deref_offset(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr),
+                                        false, NULL, is_patch ? NULL : &vertex_index,
+                                        &const_index, &indir_index);
 
-                       ctx->abi->store_tcs_outputs(ctx->abi, instr->variables[0]->var,
+                       ctx->abi->store_tcs_outputs(ctx->abi, var,
                                                    vertex_index, indir_index,
                                                    const_index, src, writemask);
                        return;
@@ -1919,11 +2007,11 @@ visit_store_var(struct ac_nir_context *ctx,
 
                        value = ac_llvm_extract_elem(&ctx->ac, src, chan - comp);
 
-                       if (instr->variables[0]->var->data.compact)
+                       if (var->data.compact)
                                stride = 1;
                        if (indir_index) {
                                unsigned count = glsl_count_attribute_slots(
-                                               instr->variables[0]->var->type, false);
+                                               var->type, false);
                                count -= chan / 4;
                                LLVMValueRef tmp_vec = ac_build_gather_values_extended(
                                                &ctx->ac, ctx->abi->outputs + idx + chan, count,
@@ -1949,7 +2037,7 @@ visit_store_var(struct ac_nir_context *ctx,
                        value = ac_llvm_extract_elem(&ctx->ac, src, chan);
                        if (indir_index) {
                                unsigned count = glsl_count_attribute_slots(
-                                       instr->variables[0]->var->type, false);
+                                       var->type, false);
                                count -= chan / 4;
                                LLVMValueRef tmp_vec = ac_build_gather_values_extended(
                                        &ctx->ac, ctx->locals + idx + chan, count,
@@ -1968,13 +2056,9 @@ visit_store_var(struct ac_nir_context *ctx,
                break;
        case nir_var_shared: {
                int writemask = instr->const_index[0];
-               LLVMValueRef address = build_gep_for_deref(ctx,
-                                                          instr->variables[0]);
-               LLVMValueRef val = get_src(ctx, instr->src[0]);
-               unsigned components =
-                       glsl_get_vector_elements(
-                          nir_deref_tail(&instr->variables[0]->deref)->type);
-               if (writemask == (1 << components) - 1) {
+               LLVMValueRef address = get_src(ctx, instr->src[0]);
+               LLVMValueRef val = get_src(ctx, instr->src[1]);
+               if (util_is_power_of_two_nonzero(writemask)) {
                        val = LLVMBuildBitCast(
                           ctx->ac.builder, val,
                           LLVMGetElementType(LLVMTypeOf(address)), "");
@@ -2100,18 +2184,32 @@ static LLVMValueRef adjust_sample_index_using_fmask(struct ac_llvm_context *ctx,
        return sample_index;
 }
 
+static nir_variable *get_image_variable(const nir_intrinsic_instr *instr)
+{
+       assert(instr->src[0].is_ssa);
+       return nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
+}
+
+static LLVMValueRef get_image_descriptor(struct ac_nir_context *ctx,
+                                         const nir_intrinsic_instr *instr,
+                                         enum ac_descriptor_type desc_type,
+                                         bool write)
+{
+       return get_sampler_desc(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr), desc_type, NULL, true, write);
+}
+
 static void get_image_coords(struct ac_nir_context *ctx,
                             const nir_intrinsic_instr *instr,
                             struct ac_image_args *args)
 {
-       const struct glsl_type *type = glsl_without_array(instr->variables[0]->var->type);
+       const struct glsl_type *type = glsl_without_array(get_image_variable(instr)->type);
 
-       LLVMValueRef src0 = get_src(ctx, instr->src[0]);
+       LLVMValueRef src0 = get_src(ctx, instr->src[1]);
        LLVMValueRef masks[] = {
                LLVMConstInt(ctx->ac.i32, 0, false), LLVMConstInt(ctx->ac.i32, 1, false),
                LLVMConstInt(ctx->ac.i32, 2, false), LLVMConstInt(ctx->ac.i32, 3, false),
        };
-       LLVMValueRef sample_index = ac_llvm_extract_elem(&ctx->ac, get_src(ctx, instr->src[1]), 0);
+       LLVMValueRef sample_index = ac_llvm_extract_elem(&ctx->ac, get_src(ctx, instr->src[2]), 0);
 
        int count;
        enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
@@ -2146,10 +2244,11 @@ static void get_image_coords(struct ac_nir_context *ctx,
                                                               fmask_load_address[1],
                                                               fmask_load_address[2],
                                                               sample_index,
-                                                              get_sampler_desc(ctx, instr->variables[0], AC_DESC_FMASK, NULL, true, false));
+                                                              get_sampler_desc(ctx, nir_instr_as_deref(instr->src[0].ssa->parent_instr),
+                                                                               AC_DESC_FMASK, NULL, false, false));
        }
        if (count == 1 && !gfx9_1d) {
-               if (instr->src[0].ssa->num_components)
+               if (instr->src[1].ssa->num_components)
                        args->coords[0] = LLVMBuildExtractElement(ctx->ac.builder, src0, masks[0], "");
                else
                        args->coords[0] = src0;
@@ -2192,7 +2291,7 @@ static void get_image_coords(struct ac_nir_context *ctx,
 static LLVMValueRef get_image_buffer_descriptor(struct ac_nir_context *ctx,
                                                 const nir_intrinsic_instr *instr, bool write)
 {
-       LLVMValueRef rsrc = get_sampler_desc(ctx, instr->variables[0], AC_DESC_BUFFER, NULL, true, write);
+       LLVMValueRef rsrc = get_image_descriptor(ctx, instr, AC_DESC_BUFFER, write);
        if (ctx->abi->gfx9_stride_size_workaround) {
                LLVMValueRef elem_count = LLVMBuildExtractElement(ctx->ac.builder, rsrc, LLVMConstInt(ctx->ac.i32, 2, 0), "");
                LLVMValueRef stride = LLVMBuildExtractElement(ctx->ac.builder, rsrc, LLVMConstInt(ctx->ac.i32, 1, 0), "");
@@ -2212,12 +2311,9 @@ static LLVMValueRef visit_image_load(struct ac_nir_context *ctx,
                                     const nir_intrinsic_instr *instr)
 {
        LLVMValueRef res;
-       const nir_variable *var = instr->variables[0]->var;
+       const nir_variable *var = get_image_variable(instr);
        const struct glsl_type *type = var->type;
 
-       if(instr->variables[0]->deref.child)
-               type = instr->variables[0]->deref.child->type;
-
        type = glsl_without_array(type);
 
        const enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
@@ -2227,7 +2323,7 @@ static LLVMValueRef visit_image_load(struct ac_nir_context *ctx,
                LLVMValueRef rsrc, vindex;
 
                rsrc = get_image_buffer_descriptor(ctx, instr, false);
-               vindex = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[0]),
+               vindex = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[1]),
                                                 ctx->ac.i32_0, "");
 
                /* TODO: set "glc" and "can_speculate" when OpenGL needs it. */
@@ -2242,13 +2338,12 @@ static LLVMValueRef visit_image_load(struct ac_nir_context *ctx,
                struct ac_image_args args = {};
                args.opcode = ac_image_load;
                get_image_coords(ctx, instr, &args);
-               args.resource = get_sampler_desc(ctx, instr->variables[0],
-                                                AC_DESC_IMAGE, NULL, true, false);
+               args.resource = get_image_descriptor(ctx, instr, AC_DESC_IMAGE, false);
                args.dim = get_ac_image_dim(&ctx->ac, glsl_get_sampler_dim(type),
                                            glsl_sampler_type_is_array(type));
                args.dmask = 15;
                args.attributes = AC_FUNC_ATTR_READONLY;
-               if (var->data.image._volatile || var->data.image.coherent)
+               if (var->data.image.access & (ACCESS_VOLATILE | ACCESS_COHERENT))
                        args.cache_policy |= ac_glc;
 
                res = ac_build_image_opcode(&ctx->ac, &args);
@@ -2260,7 +2355,7 @@ static void visit_image_store(struct ac_nir_context *ctx,
                              nir_intrinsic_instr *instr)
 {
        LLVMValueRef params[8];
-       const nir_variable *var = instr->variables[0]->var;
+       const nir_variable *var = get_image_variable(instr);
        const struct glsl_type *type = glsl_without_array(var->type);
        const enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
        LLVMValueRef glc = ctx->ac.i1false;
@@ -2271,9 +2366,9 @@ static void visit_image_store(struct ac_nir_context *ctx,
        if (dim == GLSL_SAMPLER_DIM_BUF) {
                LLVMValueRef rsrc = get_image_buffer_descriptor(ctx, instr, true);
 
-               params[0] = ac_to_float(&ctx->ac, get_src(ctx, instr->src[2])); /* data */
+               params[0] = ac_to_float(&ctx->ac, get_src(ctx, instr->src[3])); /* data */
                params[1] = rsrc;
-               params[2] = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[0]),
+               params[2] = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[1]),
                                                    ctx->ac.i32_0, ""); /* vindex */
                params[3] = ctx->ac.i32_0; /* voffset */
                params[4] = glc;  /* glc */
@@ -2283,14 +2378,13 @@ static void visit_image_store(struct ac_nir_context *ctx,
        } else {
                struct ac_image_args args = {};
                args.opcode = ac_image_store;
-               args.data[0] = ac_to_float(&ctx->ac, get_src(ctx, instr->src[2]));
+               args.data[0] = ac_to_float(&ctx->ac, get_src(ctx, instr->src[3]));
                get_image_coords(ctx, instr, &args);
-               args.resource = get_sampler_desc(ctx, instr->variables[0],
-                                                AC_DESC_IMAGE, NULL, true, false);
+               args.resource = get_image_descriptor(ctx, instr, AC_DESC_IMAGE, true);
                args.dim = get_ac_image_dim(&ctx->ac, glsl_get_sampler_dim(type),
                                            glsl_sampler_type_is_array(type));
                args.dmask = 15;
-               if (force_glc || var->data.image._volatile || var->data.image.coherent)
+               if (force_glc || (var->data.image.access & (ACCESS_VOLATILE | ACCESS_COHERENT)))
                        args.cache_policy |= ac_glc;
 
                ac_build_image_opcode(&ctx->ac, &args);
@@ -2303,9 +2397,9 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
 {
        LLVMValueRef params[7];
        int param_count = 0;
-       const nir_variable *var = instr->variables[0]->var;
+       const nir_variable *var = get_image_variable(instr);
 
-       bool cmpswap = instr->intrinsic == nir_intrinsic_image_var_atomic_comp_swap;
+       bool cmpswap = instr->intrinsic == nir_intrinsic_image_deref_atomic_comp_swap;
        const char *atomic_name;
        char intrinsic_name[41];
        enum ac_atomic_op atomic_subop;
@@ -2315,35 +2409,35 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
        bool is_unsigned = glsl_get_sampler_result_type(type) == GLSL_TYPE_UINT;
 
        switch (instr->intrinsic) {
-       case nir_intrinsic_image_var_atomic_add:
+       case nir_intrinsic_image_deref_atomic_add:
                atomic_name = "add";
                atomic_subop = ac_atomic_add;
                break;
-       case nir_intrinsic_image_var_atomic_min:
+       case nir_intrinsic_image_deref_atomic_min:
                atomic_name = is_unsigned ? "umin" : "smin";
                atomic_subop = is_unsigned ? ac_atomic_umin : ac_atomic_smin;
                break;
-       case nir_intrinsic_image_var_atomic_max:
+       case nir_intrinsic_image_deref_atomic_max:
                atomic_name = is_unsigned ? "umax" : "smax";
                atomic_subop = is_unsigned ? ac_atomic_umax : ac_atomic_smax;
                break;
-       case nir_intrinsic_image_var_atomic_and:
+       case nir_intrinsic_image_deref_atomic_and:
                atomic_name = "and";
                atomic_subop = ac_atomic_and;
                break;
-       case nir_intrinsic_image_var_atomic_or:
+       case nir_intrinsic_image_deref_atomic_or:
                atomic_name = "or";
                atomic_subop = ac_atomic_or;
                break;
-       case nir_intrinsic_image_var_atomic_xor:
+       case nir_intrinsic_image_deref_atomic_xor:
                atomic_name = "xor";
                atomic_subop = ac_atomic_xor;
                break;
-       case nir_intrinsic_image_var_atomic_exchange:
+       case nir_intrinsic_image_deref_atomic_exchange:
                atomic_name = "swap";
                atomic_subop = ac_atomic_swap;
                break;
-       case nir_intrinsic_image_var_atomic_comp_swap:
+       case nir_intrinsic_image_deref_atomic_comp_swap:
                atomic_name = "cmpswap";
                atomic_subop = 0; /* not used */
                break;
@@ -2352,12 +2446,12 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
        }
 
        if (cmpswap)
-               params[param_count++] = get_src(ctx, instr->src[3]);
-       params[param_count++] = get_src(ctx, instr->src[2]);
+               params[param_count++] = get_src(ctx, instr->src[4]);
+       params[param_count++] = get_src(ctx, instr->src[3]);
 
        if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF) {
                params[param_count++] = get_image_buffer_descriptor(ctx, instr, true);
-               params[param_count++] = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[0]),
+               params[param_count++] = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[1]),
                                                                ctx->ac.i32_0, ""); /* vindex */
                params[param_count++] = ctx->ac.i32_0; /* voffset */
                params[param_count++] = ctx->ac.i1false;  /* slc */
@@ -2376,8 +2470,7 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
                if (cmpswap)
                        args.data[1] = params[1];
                get_image_coords(ctx, instr, &args);
-               args.resource = get_sampler_desc(ctx, instr->variables[0],
-                                                AC_DESC_IMAGE, NULL, true, false);
+               args.resource = get_image_descriptor(ctx, instr, AC_DESC_IMAGE, true);
                args.dim = get_ac_image_dim(&ctx->ac, glsl_get_sampler_dim(type),
                                            glsl_sampler_type_is_array(type));
 
@@ -2388,15 +2481,14 @@ static LLVMValueRef visit_image_atomic(struct ac_nir_context *ctx,
 static LLVMValueRef visit_image_samples(struct ac_nir_context *ctx,
                                        const nir_intrinsic_instr *instr)
 {
-       const nir_variable *var = instr->variables[0]->var;
+       const nir_variable *var = get_image_variable(instr);
        const struct glsl_type *type = glsl_without_array(var->type);
 
        struct ac_image_args args = { 0 };
        args.dim = get_ac_sampler_dim(&ctx->ac, glsl_get_sampler_dim(type),
                                      glsl_sampler_type_is_array(type));
        args.dmask = 0xf;
-       args.resource = get_sampler_desc(ctx, instr->variables[0],
-                                        AC_DESC_IMAGE, NULL, true, false);
+       args.resource = get_image_descriptor(ctx, instr, AC_DESC_IMAGE, false);
        args.opcode = ac_image_get_resinfo;
        args.lod = ctx->ac.i32_0;
        args.attributes = AC_FUNC_ATTR_READNONE;
@@ -2408,20 +2500,18 @@ static LLVMValueRef visit_image_size(struct ac_nir_context *ctx,
                                     const nir_intrinsic_instr *instr)
 {
        LLVMValueRef res;
-       const nir_variable *var = instr->variables[0]->var;
+       const nir_variable *var = get_image_variable(instr);
        const struct glsl_type *type = glsl_without_array(var->type);
 
        if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF)
-               return get_buffer_size(ctx,
-                       get_sampler_desc(ctx, instr->variables[0],
-                                        AC_DESC_BUFFER, NULL, true, false), true);
+               return get_buffer_size(ctx, get_image_descriptor(ctx, instr, AC_DESC_BUFFER, false), true);
 
        struct ac_image_args args = { 0 };
 
        args.dim = get_ac_image_dim(&ctx->ac, glsl_get_sampler_dim(type),
                                    glsl_sampler_type_is_array(type));
        args.dmask = 0xf;
-       args.resource = get_sampler_desc(ctx, instr->variables[0], AC_DESC_IMAGE, NULL, true, false);
+       args.resource = get_image_descriptor(ctx, instr, AC_DESC_IMAGE, false);
        args.opcode = ac_image_get_resinfo;
        args.lod = ctx->ac.i32_0;
        args.attributes = AC_FUNC_ATTR_READNONE;
@@ -2448,10 +2538,6 @@ static LLVMValueRef visit_image_size(struct ac_nir_context *ctx,
        return res;
 }
 
-#define NOOP_WAITCNT 0xf7f
-#define LGKM_CNT 0x07f
-#define VM_CNT 0xf70
-
 static void emit_membar(struct ac_llvm_context *ac,
                        const nir_intrinsic_instr *instr)
 {
@@ -2487,8 +2573,7 @@ void ac_emit_barrier(struct ac_llvm_context *ac, gl_shader_stage stage)
                ac_build_waitcnt(ac, LGKM_CNT & VM_CNT);
                return;
        }
-       ac_build_intrinsic(ac, "llvm.amdgcn.s.barrier",
-                          ac->voidt, NULL, 0, AC_FUNC_ATTR_CONVERGENT);
+       ac_build_s_barrier(ac);
 }
 
 static void emit_discard(struct ac_nir_context *ctx,
@@ -2617,8 +2702,8 @@ static LLVMValueRef visit_var_atomic(struct ac_nir_context *ctx,
        LLVMValueRef result;
        LLVMValueRef src = get_src(ctx, instr->src[src_idx]);
 
-       if (instr->intrinsic == nir_intrinsic_var_atomic_comp_swap ||
-           instr->intrinsic == nir_intrinsic_shared_atomic_comp_swap) {
+       if (instr->intrinsic == nir_intrinsic_shared_atomic_comp_swap ||
+           instr->intrinsic == nir_intrinsic_deref_atomic_comp_swap) {
                LLVMValueRef src1 = get_src(ctx, instr->src[src_idx + 1]);
                result = LLVMBuildAtomicCmpXchg(ctx->ac.builder,
                                                ptr, src, src1,
@@ -2629,40 +2714,40 @@ static LLVMValueRef visit_var_atomic(struct ac_nir_context *ctx,
        } else {
                LLVMAtomicRMWBinOp op;
                switch (instr->intrinsic) {
-               case nir_intrinsic_var_atomic_add:
                case nir_intrinsic_shared_atomic_add:
+               case nir_intrinsic_deref_atomic_add:
                        op = LLVMAtomicRMWBinOpAdd;
                        break;
-               case nir_intrinsic_var_atomic_umin:
                case nir_intrinsic_shared_atomic_umin:
+               case nir_intrinsic_deref_atomic_umin:
                        op = LLVMAtomicRMWBinOpUMin;
                        break;
-               case nir_intrinsic_var_atomic_umax:
                case nir_intrinsic_shared_atomic_umax:
+               case nir_intrinsic_deref_atomic_umax:
                        op = LLVMAtomicRMWBinOpUMax;
                        break;
-               case nir_intrinsic_var_atomic_imin:
                case nir_intrinsic_shared_atomic_imin:
+               case nir_intrinsic_deref_atomic_imin:
                        op = LLVMAtomicRMWBinOpMin;
                        break;
-               case nir_intrinsic_var_atomic_imax:
                case nir_intrinsic_shared_atomic_imax:
+               case nir_intrinsic_deref_atomic_imax:
                        op = LLVMAtomicRMWBinOpMax;
                        break;
-               case nir_intrinsic_var_atomic_and:
                case nir_intrinsic_shared_atomic_and:
+               case nir_intrinsic_deref_atomic_and:
                        op = LLVMAtomicRMWBinOpAnd;
                        break;
-               case nir_intrinsic_var_atomic_or:
                case nir_intrinsic_shared_atomic_or:
+               case nir_intrinsic_deref_atomic_or:
                        op = LLVMAtomicRMWBinOpOr;
                        break;
-               case nir_intrinsic_var_atomic_xor:
                case nir_intrinsic_shared_atomic_xor:
+               case nir_intrinsic_deref_atomic_xor:
                        op = LLVMAtomicRMWBinOpXor;
                        break;
-               case nir_intrinsic_var_atomic_exchange:
                case nir_intrinsic_shared_atomic_exchange:
+               case nir_intrinsic_deref_atomic_exchange:
                        op = LLVMAtomicRMWBinOpXchg;
                        break;
                default:
@@ -2699,24 +2784,26 @@ static LLVMValueRef visit_interp(struct ac_nir_context *ctx,
        LLVMValueRef src_c0 = NULL;
        LLVMValueRef src_c1 = NULL;
        LLVMValueRef src0 = NULL;
-       int input_index = instr->variables[0]->var->data.location - VARYING_SLOT_VAR0;
+
+       nir_variable *var = nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr));
+       int input_index = var->data.location - VARYING_SLOT_VAR0;
        switch (instr->intrinsic) {
-       case nir_intrinsic_interp_var_at_centroid:
+       case nir_intrinsic_interp_deref_at_centroid:
                location = INTERP_CENTROID;
                break;
-       case nir_intrinsic_interp_var_at_sample:
-       case nir_intrinsic_interp_var_at_offset:
+       case nir_intrinsic_interp_deref_at_sample:
+       case nir_intrinsic_interp_deref_at_offset:
                location = INTERP_CENTER;
-               src0 = get_src(ctx, instr->src[0]);
+               src0 = get_src(ctx, instr->src[1]);
                break;
        default:
                break;
        }
 
-       if (instr->intrinsic == nir_intrinsic_interp_var_at_offset) {
+       if (instr->intrinsic == nir_intrinsic_interp_deref_at_offset) {
                src_c0 = ac_to_float(&ctx->ac, LLVMBuildExtractElement(ctx->ac.builder, src0, ctx->ac.i32_0, ""));
                src_c1 = ac_to_float(&ctx->ac, LLVMBuildExtractElement(ctx->ac.builder, src0, ctx->ac.i32_1, ""));
-       } else if (instr->intrinsic == nir_intrinsic_interp_var_at_sample) {
+       } else if (instr->intrinsic == nir_intrinsic_interp_deref_at_sample) {
                LLVMValueRef sample_position;
                LLVMValueRef halfval = LLVMConstReal(ctx->ac.f32, 0.5f);
 
@@ -2728,7 +2815,7 @@ static LLVMValueRef visit_interp(struct ac_nir_context *ctx,
                src_c1 = LLVMBuildExtractElement(ctx->ac.builder, sample_position, ctx->ac.i32_1, "");
                src_c1 = LLVMBuildFSub(ctx->ac.builder, src_c1, halfval, "");
        }
-       interp_param = ctx->abi->lookup_interp_param(ctx->abi, instr->variables[0]->var->data.interpolation, location);
+       interp_param = ctx->abi->lookup_interp_param(ctx->abi, var->data.interpolation, location);
        attr_number = LLVMConstInt(ctx->ac.i32, input_index, false);
 
        if (location == INTERP_CENTER) {
@@ -2757,11 +2844,8 @@ static LLVMValueRef visit_interp(struct ac_nir_context *ctx,
                        interp_el = LLVMBuildBitCast(ctx->ac.builder, interp_el,
                                                     ctx->ac.f32, "");
 
-                       temp1 = LLVMBuildFMul(ctx->ac.builder, ddx_el, src_c0, "");
-                       temp1 = LLVMBuildFAdd(ctx->ac.builder, temp1, interp_el, "");
-
-                       temp2 = LLVMBuildFMul(ctx->ac.builder, ddy_el, src_c1, "");
-                       temp2 = LLVMBuildFAdd(ctx->ac.builder, temp2, temp1, "");
+                       temp1 = ac_build_fmad(&ctx->ac, ddx_el, src_c0, interp_el);
+                       temp2 = ac_build_fmad(&ctx->ac, ddy_el, src_c1, temp1);
 
                        ij_out[i] = LLVMBuildBitCast(ctx->ac.builder,
                                                     temp2, ctx->ac.i32, "");
@@ -2792,7 +2876,7 @@ static LLVMValueRef visit_interp(struct ac_nir_context *ctx,
                }
        }
        return ac_build_varying_gather_values(&ctx->ac, result, instr->num_components,
-                                             instr->variables[0]->var->data.location_frac);
+                                             var->data.location_frac);
 }
 
 static void visit_intrinsic(struct ac_nir_context *ctx,
@@ -2951,10 +3035,10 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
        case nir_intrinsic_get_buffer_size:
                result = visit_get_buffer_size(ctx, instr);
                break;
-       case nir_intrinsic_load_var:
+       case nir_intrinsic_load_deref:
                result = visit_load_var(ctx, instr);
                break;
-       case nir_intrinsic_store_var:
+       case nir_intrinsic_store_deref:
                visit_store_var(ctx, instr);
                break;
        case nir_intrinsic_load_shared:
@@ -2963,26 +3047,26 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
        case nir_intrinsic_store_shared:
                visit_store_shared(ctx, instr);
                break;
-       case nir_intrinsic_image_var_samples:
+       case nir_intrinsic_image_deref_samples:
                result = visit_image_samples(ctx, instr);
                break;
-       case nir_intrinsic_image_var_load:
+       case nir_intrinsic_image_deref_load:
                result = visit_image_load(ctx, instr);
                break;
-       case nir_intrinsic_image_var_store:
+       case nir_intrinsic_image_deref_store:
                visit_image_store(ctx, instr);
                break;
-       case nir_intrinsic_image_var_atomic_add:
-       case nir_intrinsic_image_var_atomic_min:
-       case nir_intrinsic_image_var_atomic_max:
-       case nir_intrinsic_image_var_atomic_and:
-       case nir_intrinsic_image_var_atomic_or:
-       case nir_intrinsic_image_var_atomic_xor:
-       case nir_intrinsic_image_var_atomic_exchange:
-       case nir_intrinsic_image_var_atomic_comp_swap:
+       case nir_intrinsic_image_deref_atomic_add:
+       case nir_intrinsic_image_deref_atomic_min:
+       case nir_intrinsic_image_deref_atomic_max:
+       case nir_intrinsic_image_deref_atomic_and:
+       case nir_intrinsic_image_deref_atomic_or:
+       case nir_intrinsic_image_deref_atomic_xor:
+       case nir_intrinsic_image_deref_atomic_exchange:
+       case nir_intrinsic_image_deref_atomic_comp_swap:
                result = visit_image_atomic(ctx, instr);
                break;
-       case nir_intrinsic_image_var_size:
+       case nir_intrinsic_image_deref_size:
                result = visit_image_size(ctx, instr);
                break;
        case nir_intrinsic_shader_clock:
@@ -3017,23 +3101,23 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
                result = visit_var_atomic(ctx, instr, ptr, 1);
                break;
        }
-       case nir_intrinsic_var_atomic_add:
-       case nir_intrinsic_var_atomic_imin:
-       case nir_intrinsic_var_atomic_umin:
-       case nir_intrinsic_var_atomic_imax:
-       case nir_intrinsic_var_atomic_umax:
-       case nir_intrinsic_var_atomic_and:
-       case nir_intrinsic_var_atomic_or:
-       case nir_intrinsic_var_atomic_xor:
-       case nir_intrinsic_var_atomic_exchange:
-       case nir_intrinsic_var_atomic_comp_swap: {
-               LLVMValueRef ptr = build_gep_for_deref(ctx, instr->variables[0]);
-               result = visit_var_atomic(ctx, instr, ptr, 0);
+       case nir_intrinsic_deref_atomic_add:
+       case nir_intrinsic_deref_atomic_imin:
+       case nir_intrinsic_deref_atomic_umin:
+       case nir_intrinsic_deref_atomic_imax:
+       case nir_intrinsic_deref_atomic_umax:
+       case nir_intrinsic_deref_atomic_and:
+       case nir_intrinsic_deref_atomic_or:
+       case nir_intrinsic_deref_atomic_xor:
+       case nir_intrinsic_deref_atomic_exchange:
+       case nir_intrinsic_deref_atomic_comp_swap: {
+               LLVMValueRef ptr = get_src(ctx, instr->src[0]);
+               result = visit_var_atomic(ctx, instr, ptr, 1);
                break;
        }
-       case nir_intrinsic_interp_var_at_centroid:
-       case nir_intrinsic_interp_var_at_sample:
-       case nir_intrinsic_interp_var_at_offset:
+       case nir_intrinsic_interp_deref_at_centroid:
+       case nir_intrinsic_interp_deref_at_sample:
+       case nir_intrinsic_interp_deref_at_offset:
                result = visit_interp(ctx, instr);
                break;
        case nir_intrinsic_emit_vertex:
@@ -3111,7 +3195,7 @@ static void visit_intrinsic(struct ac_nir_context *ctx,
 }
 
 static LLVMValueRef get_sampler_desc(struct ac_nir_context *ctx,
-                                    const nir_deref_var *deref,
+                                    nir_deref_instr *deref_instr,
                                     enum ac_descriptor_type desc_type,
                                     const nir_tex_instr *tex_instr,
                                     bool image, bool write)
@@ -3122,45 +3206,36 @@ static LLVMValueRef get_sampler_desc(struct ac_nir_context *ctx,
        unsigned base_index;
        bool bindless = false;
 
-       if (!deref) {
+       if (!deref_instr) {
                assert(tex_instr && !image);
                descriptor_set = 0;
                base_index = tex_instr->sampler_index;
        } else {
-               const nir_deref *tail = &deref->deref;
-               while (tail->child) {
-                       const nir_deref_array *child = nir_deref_as_array(tail->child);
-                       unsigned array_size = glsl_get_aoa_size(tail->child->type);
-
+               while(deref_instr->deref_type != nir_deref_type_var) {
+                       unsigned array_size = glsl_get_aoa_size(deref_instr->type);
                        if (!array_size)
                                array_size = 1;
 
-                       assert(child->deref_array_type != nir_deref_array_type_wildcard);
-
-                       if (child->deref_array_type == nir_deref_array_type_indirect) {
-                               LLVMValueRef indirect = get_src(ctx, child->indirect);
+                       assert(deref_instr->deref_type == nir_deref_type_array);
+                       nir_const_value *const_value = nir_src_as_const_value(deref_instr->arr.index);
+                       if (const_value) {
+                               constant_index += array_size * const_value->u32[0];
+                       } else {
+                               LLVMValueRef indirect = get_src(ctx, deref_instr->arr.index);
 
                                indirect = LLVMBuildMul(ctx->ac.builder, indirect,
                                        LLVMConstInt(ctx->ac.i32, array_size, false), "");
 
-                               if (!index)
+                                if (!index)
                                        index = indirect;
                                else
                                        index = LLVMBuildAdd(ctx->ac.builder, index, indirect, "");
                        }
 
-                       constant_index += child->base_offset * array_size;
-
-                       tail = &child->deref;
-               }
-               descriptor_set = deref->var->data.descriptor_set;
-
-               if (deref->var->data.bindless) {
-                       bindless = deref->var->data.bindless;
-                       base_index = deref->var->data.driver_location;
-               } else {
-                       base_index = deref->var->data.binding;
+                       deref_instr = nir_src_as_deref(deref_instr->parent);
                }
+               descriptor_set = deref_instr->var->data.descriptor_set;
+               base_index = deref_instr->var->data.binding;
        }
 
        return ctx->abi->load_sampler_desc(ctx->abi,
@@ -3204,21 +3279,37 @@ static void tex_fetch_ptrs(struct ac_nir_context *ctx,
                           LLVMValueRef *res_ptr, LLVMValueRef *samp_ptr,
                           LLVMValueRef *fmask_ptr)
 {
+       nir_deref_instr *texture_deref_instr = NULL;
+       nir_deref_instr *sampler_deref_instr = NULL;
+
+       for (unsigned i = 0; i < instr->num_srcs; i++) {
+               switch (instr->src[i].src_type) {
+               case nir_tex_src_texture_deref:
+                       texture_deref_instr = nir_src_as_deref(instr->src[i].src);
+                       break;
+               case nir_tex_src_sampler_deref:
+                       sampler_deref_instr = nir_src_as_deref(instr->src[i].src);
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       if (!sampler_deref_instr)
+               sampler_deref_instr = texture_deref_instr;
+
        if (instr->sampler_dim  == GLSL_SAMPLER_DIM_BUF)
-               *res_ptr = get_sampler_desc(ctx, instr->texture, AC_DESC_BUFFER, instr, false, false);
+               *res_ptr = get_sampler_desc(ctx, texture_deref_instr, AC_DESC_BUFFER, instr, false, false);
        else
-               *res_ptr = get_sampler_desc(ctx, instr->texture, AC_DESC_IMAGE, instr, false, false);
+               *res_ptr = get_sampler_desc(ctx, texture_deref_instr, AC_DESC_IMAGE, instr, false, false);
        if (samp_ptr) {
-               if (instr->sampler)
-                       *samp_ptr = get_sampler_desc(ctx, instr->sampler, AC_DESC_SAMPLER, instr, false, false);
-               else
-                       *samp_ptr = get_sampler_desc(ctx, instr->texture, AC_DESC_SAMPLER, instr, false, false);
+               *samp_ptr = get_sampler_desc(ctx, sampler_deref_instr, AC_DESC_SAMPLER, instr, false, false);
                if (instr->sampler_dim < GLSL_SAMPLER_DIM_RECT)
                        *samp_ptr = sici_fix_sampler_aniso(ctx, *res_ptr, *samp_ptr);
        }
-       if (fmask_ptr && !instr->sampler && (instr->op == nir_texop_txf_ms ||
-                                            instr->op == nir_texop_samples_identical))
-               *fmask_ptr = get_sampler_desc(ctx, instr->texture, AC_DESC_FMASK, instr, false, false);
+       if (fmask_ptr && (instr->op == nir_texop_txf_ms ||
+                         instr->op == nir_texop_samples_identical))
+               *fmask_ptr = get_sampler_desc(ctx, texture_deref_instr, AC_DESC_FMASK, instr, false, false);
 }
 
 static LLVMValueRef apply_round_slice(struct ac_llvm_context *ctx,
@@ -3578,6 +3669,34 @@ static void visit_jump(struct ac_llvm_context *ctx,
        }
 }
 
+static void visit_deref(struct ac_nir_context *ctx,
+                        nir_deref_instr *instr)
+{
+       if (instr->mode != nir_var_shared)
+               return;
+
+       LLVMValueRef result = NULL;
+       switch(instr->deref_type) {
+       case nir_deref_type_var: {
+               struct hash_entry *entry = _mesa_hash_table_search(ctx->vars, instr->var);
+               result = entry->data;
+               break;
+       }
+       case nir_deref_type_struct:
+               result = ac_build_gep0(&ctx->ac, get_src(ctx, instr->parent),
+                                      LLVMConstInt(ctx->ac.i32, instr->strct.index, 0));
+               break;
+       case nir_deref_type_array:
+               result = ac_build_gep0(&ctx->ac, get_src(ctx, instr->parent),
+                                      get_src(ctx, instr->arr.index));
+               break;
+       default:
+               unreachable("Unhandled deref_instr deref type");
+       }
+
+       ctx->ssa_defs[instr->dest.ssa.index] = result;
+}
+
 static void visit_cf_list(struct ac_nir_context *ctx,
                           struct exec_list *list);
 
@@ -3608,6 +3727,9 @@ static void visit_block(struct ac_nir_context *ctx, nir_block *block)
                case nir_instr_type_jump:
                        visit_jump(&ctx->ac, nir_instr_as_jump(instr));
                        break;
+               case nir_instr_type_deref:
+                       visit_deref(ctx, nir_instr_as_deref(instr));
+                       break;
                default:
                        fprintf(stderr, "Unknown NIR instr type: ");
                        nir_print_instr(instr, stderr);
@@ -3706,10 +3828,12 @@ ac_handle_shader_output_decl(struct ac_llvm_context *ctx,
                }
        }
 
+       bool is_16bit = glsl_type_is_16bit(variable->type);
+       LLVMTypeRef type = is_16bit ? ctx->f16 : ctx->f32;
        for (unsigned i = 0; i < attrib_count; ++i) {
                for (unsigned chan = 0; chan < 4; chan++) {
                        abi->outputs[ac_llvm_reg_index_soa(output_loc + i, chan)] =
-                                      ac_build_alloca_undef(ctx, ctx->f32, "");
+                                      ac_build_alloca_undef(ctx, type, "");
                }
        }
 }