i965/nir/vec4: Add shader function implementation
[mesa.git] / src / mesa / drivers / dri / i965 / brw_fs_nir.cpp
index 133c99ce9922134e54b0871d8b197bcdd374111b..9cb7b0db3f6b6bf3b6ee000dacb01f51fe22bf40 100644 (file)
 #include "glsl/nir/glsl_to_nir.h"
 #include "program/prog_to_nir.h"
 #include "brw_fs.h"
+#include "brw_fs_surface_builder.h"
 #include "brw_nir.h"
 
+using namespace brw;
+
 void
 fs_visitor::emit_nir_code()
 {
@@ -36,31 +39,11 @@ fs_visitor::emit_nir_code()
    /* emit the arrays used for inputs and outputs - load/store intrinsics will
     * be converted to reads/writes of these arrays
     */
-
-   if (nir->num_inputs > 0) {
-      nir_inputs = vgrf(nir->num_inputs);
-      nir_setup_inputs(nir);
-   }
-
-   if (nir->num_outputs > 0) {
-      nir_outputs = vgrf(nir->num_outputs);
-      nir_setup_outputs(nir);
-   }
-
-   if (nir->num_uniforms > 0) {
-      nir_setup_uniforms(nir);
-   }
-
+   nir_setup_inputs(nir);
+   nir_setup_outputs(nir);
+   nir_setup_uniforms(nir);
    nir_emit_system_values(nir);
 
-   nir_globals = ralloc_array(mem_ctx, fs_reg, nir->reg_alloc);
-   foreach_list_typed(nir_register, reg, node, &nir->registers) {
-      unsigned array_elems =
-         reg->num_array_elems == 0 ? 1 : reg->num_array_elems;
-      unsigned size = array_elems * reg->num_components;
-      nir_globals[reg->index] = vgrf(size);
-   }
-
    /* get the main function and emit it */
    nir_foreach_overload(nir, overload) {
       assert(strcmp(overload->function->name, "main") == 0);
@@ -72,9 +55,11 @@ fs_visitor::emit_nir_code()
 void
 fs_visitor::nir_setup_inputs(nir_shader *shader)
 {
+   nir_inputs = bld.vgrf(BRW_REGISTER_TYPE_F, shader->num_inputs);
+
    foreach_list_typed(nir_variable, var, node, &shader->inputs) {
       enum brw_reg_type type = brw_type_for_base_type(var->type);
-      fs_reg input = offset(nir_inputs, var->data.driver_location);
+      fs_reg input = offset(nir_inputs, bld, var->data.driver_location);
 
       fs_reg reg;
       switch (stage) {
@@ -89,25 +74,35 @@ fs_visitor::nir_setup_inputs(nir_shader *shader)
           * So, we need to copy from fs_reg(ATTR, var->location) to
           * offset(nir_inputs, var->data.driver_location).
           */
-         unsigned components = var->type->without_array()->components();
+         const glsl_type *const t = var->type->without_array();
+         const unsigned components = t->components();
+         const unsigned cols = t->matrix_columns;
+         const unsigned elts = t->vector_elements;
          unsigned array_length = var->type->is_array() ? var->type->length : 1;
          for (unsigned i = 0; i < array_length; i++) {
-            for (unsigned j = 0; j < components; j++) {
-               emit(MOV(retype(offset(input, components * i + j), type),
-                        offset(fs_reg(ATTR, var->data.location + i, type), j)));
+            for (unsigned j = 0; j < cols; j++) {
+               for (unsigned k = 0; k < elts; k++) {
+                  bld.MOV(offset(retype(input, type), bld,
+                                 components * i + elts * j + k),
+                          offset(fs_reg(ATTR, var->data.location + i, type),
+                                 bld, 4 * j + k));
+               }
             }
          }
          break;
       }
       case MESA_SHADER_GEOMETRY:
       case MESA_SHADER_COMPUTE:
+      case MESA_SHADER_TESS_CTRL:
+      case MESA_SHADER_TESS_EVAL:
          unreachable("fs_visitor not used for these stages yet.");
          break;
       case MESA_SHADER_FRAGMENT:
          if (var->data.location == VARYING_SLOT_POS) {
             reg = *emit_fragcoord_interpolation(var->data.pixel_center_integer,
                                                 var->data.origin_upper_left);
-            emit_percomp(MOV(input, reg), 0xF);
+            emit_percomp(bld, fs_inst(BRW_OPCODE_MOV, bld.dispatch_width(),
+                                      input, reg), 0xF);
          } else {
             emit_general_interpolation(input, var->name, var->type,
                                        (glsl_interp_qualifier) var->data.interpolation,
@@ -124,45 +119,54 @@ fs_visitor::nir_setup_outputs(nir_shader *shader)
 {
    brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
 
+   nir_outputs = bld.vgrf(BRW_REGISTER_TYPE_F, shader->num_outputs);
+
    foreach_list_typed(nir_variable, var, node, &shader->outputs) {
-      fs_reg reg = offset(nir_outputs, var->data.driver_location);
+      fs_reg reg = offset(nir_outputs, bld, var->data.driver_location);
 
       int vector_elements =
          var->type->is_array() ? var->type->fields.array->vector_elements
                                : var->type->vector_elements;
 
-      if (stage == MESA_SHADER_VERTEX) {
+      switch (stage) {
+      case MESA_SHADER_VERTEX:
          for (int i = 0; i < ALIGN(type_size(var->type), 4) / 4; i++) {
             int output = var->data.location + i;
-            this->outputs[output] = offset(reg, 4 * i);
+            this->outputs[output] = offset(reg, bld, 4 * i);
             this->output_components[output] = vector_elements;
          }
-      } else if (var->data.index > 0) {
-         assert(var->data.location == FRAG_RESULT_DATA0);
-         assert(var->data.index == 1);
-         this->dual_src_output = reg;
-         this->do_dual_src = true;
-      } else if (var->data.location == FRAG_RESULT_COLOR) {
-         /* Writing gl_FragColor outputs to all color regions. */
-         for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) {
-            this->outputs[i] = reg;
-            this->output_components[i] = 4;
-         }
-      } else if (var->data.location == FRAG_RESULT_DEPTH) {
-         this->frag_depth = reg;
-      } else if (var->data.location == FRAG_RESULT_SAMPLE_MASK) {
-         this->sample_mask = reg;
-      } else {
-         /* gl_FragData or a user-defined FS output */
-         assert(var->data.location >= FRAG_RESULT_DATA0 &&
-                var->data.location < FRAG_RESULT_DATA0 + BRW_MAX_DRAW_BUFFERS);
-
-         /* General color output. */
-         for (unsigned int i = 0; i < MAX2(1, var->type->length); i++) {
-            int output = var->data.location - FRAG_RESULT_DATA0 + i;
-            this->outputs[output] = offset(reg, vector_elements * i);
-            this->output_components[output] = vector_elements;
+         break;
+      case MESA_SHADER_FRAGMENT:
+         if (var->data.index > 0) {
+            assert(var->data.location == FRAG_RESULT_DATA0);
+            assert(var->data.index == 1);
+            this->dual_src_output = reg;
+            this->do_dual_src = true;
+         } else if (var->data.location == FRAG_RESULT_COLOR) {
+            /* Writing gl_FragColor outputs to all color regions. */
+            for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) {
+               this->outputs[i] = reg;
+               this->output_components[i] = 4;
+            }
+         } else if (var->data.location == FRAG_RESULT_DEPTH) {
+            this->frag_depth = reg;
+         } else if (var->data.location == FRAG_RESULT_SAMPLE_MASK) {
+            this->sample_mask = reg;
+         } else {
+            /* gl_FragData or a user-defined FS output */
+            assert(var->data.location >= FRAG_RESULT_DATA0 &&
+                   var->data.location < FRAG_RESULT_DATA0+BRW_MAX_DRAW_BUFFERS);
+
+            /* General color output. */
+            for (unsigned int i = 0; i < MAX2(1, var->type->length); i++) {
+               int output = var->data.location - FRAG_RESULT_DATA0 + i;
+               this->outputs[output] = offset(reg, bld, vector_elements * i);
+               this->output_components[output] = vector_elements;
+            }
          }
+         break;
+      default:
+         unreachable("unhandled shader stage");
       }
    }
 }
@@ -170,18 +174,20 @@ fs_visitor::nir_setup_outputs(nir_shader *shader)
 void
 fs_visitor::nir_setup_uniforms(nir_shader *shader)
 {
-   uniforms = shader->num_uniforms;
    num_direct_uniforms = shader->num_direct_uniforms;
 
+   if (dispatch_width != 8)
+      return;
+
    /* We split the uniform register file in half.  The first half is
     * entirely direct uniforms.  The second half is indirect.
     */
-   param_size[0] = num_direct_uniforms;
+   if (num_direct_uniforms > 0)
+      param_size[0] = num_direct_uniforms;
    if (shader->num_uniforms > num_direct_uniforms)
       param_size[num_direct_uniforms] = shader->num_uniforms - num_direct_uniforms;
 
-   if (dispatch_width != 8)
-      return;
+   uniforms = shader->num_uniforms;
 
    if (shader_prog) {
       foreach_list_typed(nir_variable, var, node, &shader->uniforms) {
@@ -361,9 +367,12 @@ fs_visitor::nir_emit_impl(nir_function_impl *impl)
       unsigned array_elems =
          reg->num_array_elems == 0 ? 1 : reg->num_array_elems;
       unsigned size = array_elems * reg->num_components;
-      nir_locals[reg->index] = vgrf(size);
+      nir_locals[reg->index] = bld.vgrf(BRW_REGISTER_TYPE_F, size);
    }
 
+   nir_ssa_values = reralloc(mem_ctx, nir_ssa_values, fs_reg,
+                             impl->ssa_alloc);
+
    nir_emit_cf_list(&impl->body);
 }
 
@@ -395,39 +404,33 @@ void
 fs_visitor::nir_emit_if(nir_if *if_stmt)
 {
    /* first, put the condition into f0 */
-   fs_inst *inst = emit(MOV(reg_null_d,
+   fs_inst *inst = bld.MOV(bld.null_reg_d(),
                             retype(get_nir_src(if_stmt->condition),
-                                   BRW_REGISTER_TYPE_D)));
+                                   BRW_REGISTER_TYPE_D));
    inst->conditional_mod = BRW_CONDITIONAL_NZ;
 
-   emit(IF(BRW_PREDICATE_NORMAL));
+   bld.IF(BRW_PREDICATE_NORMAL);
 
    nir_emit_cf_list(&if_stmt->then_list);
 
    /* note: if the else is empty, dead CF elimination will remove it */
-   emit(BRW_OPCODE_ELSE);
+   bld.emit(BRW_OPCODE_ELSE);
 
    nir_emit_cf_list(&if_stmt->else_list);
 
-   emit(BRW_OPCODE_ENDIF);
+   bld.emit(BRW_OPCODE_ENDIF);
 
-   if (!try_replace_with_sel() && devinfo->gen < 6) {
-      no16("Can't support (non-uniform) control flow on SIMD16\n");
-   }
+   try_replace_with_sel();
 }
 
 void
 fs_visitor::nir_emit_loop(nir_loop *loop)
 {
-   if (devinfo->gen < 6) {
-      no16("Can't support (non-uniform) control flow on SIMD16\n");
-   }
-
-   emit(BRW_OPCODE_DO);
+   bld.emit(BRW_OPCODE_DO);
 
    nir_emit_cf_list(&loop->body);
 
-   emit(BRW_OPCODE_WHILE);
+   bld.emit(BRW_OPCODE_WHILE);
 }
 
 void
@@ -441,36 +444,36 @@ fs_visitor::nir_emit_block(nir_block *block)
 void
 fs_visitor::nir_emit_instr(nir_instr *instr)
 {
-   this->base_ir = instr;
+   const fs_builder abld = bld.annotate(NULL, instr);
 
    switch (instr->type) {
    case nir_instr_type_alu:
-      nir_emit_alu(nir_instr_as_alu(instr));
+      nir_emit_alu(abld, nir_instr_as_alu(instr));
       break;
 
    case nir_instr_type_intrinsic:
-      nir_emit_intrinsic(nir_instr_as_intrinsic(instr));
+      nir_emit_intrinsic(abld, nir_instr_as_intrinsic(instr));
       break;
 
    case nir_instr_type_tex:
-      nir_emit_texture(nir_instr_as_tex(instr));
+      nir_emit_texture(abld, nir_instr_as_tex(instr));
       break;
 
    case nir_instr_type_load_const:
-      /* We can hit these, but we do nothing now and use them as
-       * immediates later.
-       */
+      nir_emit_load_const(abld, nir_instr_as_load_const(instr));
+      break;
+
+   case nir_instr_type_ssa_undef:
+      nir_emit_undef(abld, nir_instr_as_ssa_undef(instr));
       break;
 
    case nir_instr_type_jump:
-      nir_emit_jump(nir_instr_as_jump(instr));
+      nir_emit_jump(abld, nir_instr_as_jump(instr));
       break;
 
    default:
       unreachable("unknown instruction type");
    }
-
-   this->base_ir = NULL;
 }
 
 static brw_reg_type
@@ -495,17 +498,12 @@ bool
 fs_visitor::optimize_frontfacing_ternary(nir_alu_instr *instr,
                                          const fs_reg &result)
 {
-   if (instr->src[0].src.is_ssa ||
-       !instr->src[0].src.reg.reg ||
-       !instr->src[0].src.reg.reg->parent_instr)
-      return false;
-
-   if (instr->src[0].src.reg.reg->parent_instr->type !=
-       nir_instr_type_intrinsic)
+   if (!instr->src[0].src.is_ssa ||
+       instr->src[0].src.ssa->parent_instr->type != nir_instr_type_intrinsic)
       return false;
 
    nir_intrinsic_instr *src0 =
-      nir_instr_as_intrinsic(instr->src[0].src.reg.reg->parent_instr);
+      nir_instr_as_intrinsic(instr->src[0].src.ssa->parent_instr);
 
    if (src0->intrinsic != nir_intrinsic_load_front_face)
       return false;
@@ -543,7 +541,7 @@ fs_visitor::optimize_frontfacing_ternary(nir_alu_instr *instr,
       tmp.subreg_offset = 2;
       tmp.stride = 2;
 
-      fs_inst *or_inst = emit(OR(tmp, g0, fs_reg(0x3f80)));
+      fs_inst *or_inst = bld.OR(tmp, g0, fs_reg(0x3f80));
       or_inst->src[1].type = BRW_REGISTER_TYPE_UW;
 
       tmp.type = BRW_REGISTER_TYPE_D;
@@ -568,15 +566,15 @@ fs_visitor::optimize_frontfacing_ternary(nir_alu_instr *instr,
          g1_6.negate = true;
       }
 
-      emit(OR(tmp, g1_6, fs_reg(0x3f800000)));
+      bld.OR(tmp, g1_6, fs_reg(0x3f800000));
    }
-   emit(AND(retype(result, BRW_REGISTER_TYPE_D), tmp, fs_reg(0xbf800000)));
+   bld.AND(retype(result, BRW_REGISTER_TYPE_D), tmp, fs_reg(0xbf800000));
 
    return true;
 }
 
 void
-fs_visitor::nir_emit_alu(nir_alu_instr *instr)
+fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
 {
    struct brw_wm_prog_key *fs_key = (struct brw_wm_prog_key *) this->key;
    fs_inst *inst;
@@ -608,7 +606,7 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
          if (!instr->src[i].src.is_ssa &&
              instr->dest.dest.reg.reg == instr->src[i].src.reg.reg) {
             need_extra_copy = true;
-            temp = retype(vgrf(4), result.type);
+            temp = bld.vgrf(result.type, 4);
             break;
          }
       }
@@ -618,11 +616,11 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
             continue;
 
          if (instr->op == nir_op_imov || instr->op == nir_op_fmov) {
-            inst = emit(MOV(offset(temp, i),
-                        offset(op[0], instr->src[0].swizzle[i])));
+            inst = bld.MOV(offset(temp, bld, i),
+                           offset(op[0], bld, instr->src[0].swizzle[i]));
          } else {
-            inst = emit(MOV(offset(temp, i),
-                        offset(op[i], instr->src[i].swizzle[0])));
+            inst = bld.MOV(offset(temp, bld, i),
+                           offset(op[i], bld, instr->src[i].swizzle[0]));
          }
          inst->saturate = instr->dest.saturate;
       }
@@ -636,7 +634,7 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
             if (!(instr->dest.write_mask & (1 << i)))
                continue;
 
-            emit(MOV(offset(result, i), offset(temp, i)));
+            bld.MOV(offset(result, bld, i), offset(temp, bld, i));
          }
       }
       return;
@@ -657,24 +655,24 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
       assert(_mesa_bitcount(instr->dest.write_mask) == 1);
       channel = ffs(instr->dest.write_mask) - 1;
 
-      result = offset(result, channel);
+      result = offset(result, bld, channel);
    }
 
    for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++) {
       assert(nir_op_infos[instr->op].input_sizes[i] < 2);
-      op[i] = offset(op[i], instr->src[i].swizzle[channel]);
+      op[i] = offset(op[i], bld, instr->src[i].swizzle[channel]);
    }
 
    switch (instr->op) {
    case nir_op_i2f:
    case nir_op_u2f:
-      inst = emit(MOV(result, op[0]));
+      inst = bld.MOV(result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_f2i:
    case nir_op_f2u:
-      emit(MOV(result, op[0]));
+      bld.MOV(result, op[0]);
       break;
 
    case nir_op_fsign: {
@@ -683,17 +681,17 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
          * Predicated OR ORs 1.0 (0x3f800000) with the sign bit if val is not
          * zero.
          */
-      emit(CMP(reg_null_f, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ));
+      bld.CMP(bld.null_reg_f(), op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ);
 
       fs_reg result_int = retype(result, BRW_REGISTER_TYPE_UD);
       op[0].type = BRW_REGISTER_TYPE_UD;
       result.type = BRW_REGISTER_TYPE_UD;
-      emit(AND(result_int, op[0], fs_reg(0x80000000u)));
+      bld.AND(result_int, op[0], fs_reg(0x80000000u));
 
-      inst = emit(OR(result_int, result_int, fs_reg(0x3f800000u)));
+      inst = bld.OR(result_int, result_int, fs_reg(0x3f800000u));
       inst->predicate = BRW_PREDICATE_NORMAL;
       if (instr->dest.saturate) {
-         inst = emit(MOV(result, result));
+         inst = bld.MOV(result, result);
          inst->saturate = true;
       }
       break;
@@ -704,87 +702,87 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
        *               -> non-negative val generates 0x00000000.
        *  Predicated OR sets 1 if val is positive.
        */
-      emit(CMP(reg_null_d, op[0], fs_reg(0), BRW_CONDITIONAL_G));
-      emit(ASR(result, op[0], fs_reg(31)));
-      inst = emit(OR(result, result, fs_reg(1)));
+      bld.CMP(bld.null_reg_d(), op[0], fs_reg(0), BRW_CONDITIONAL_G);
+      bld.ASR(result, op[0], fs_reg(31));
+      inst = bld.OR(result, result, fs_reg(1));
       inst->predicate = BRW_PREDICATE_NORMAL;
       break;
 
    case nir_op_frcp:
-      inst = emit_math(SHADER_OPCODE_RCP, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_RCP, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fexp2:
-      inst = emit_math(SHADER_OPCODE_EXP2, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_EXP2, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_flog2:
-      inst = emit_math(SHADER_OPCODE_LOG2, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_LOG2, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fsin:
-      inst = emit_math(SHADER_OPCODE_SIN, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_SIN, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fcos:
-      inst = emit_math(SHADER_OPCODE_COS, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_COS, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fddx:
       if (fs_key->high_quality_derivatives) {
-         inst = emit(FS_OPCODE_DDX_FINE, result, op[0]);
+         inst = bld.emit(FS_OPCODE_DDX_FINE, result, op[0]);
       } else {
-         inst = emit(FS_OPCODE_DDX_COARSE, result, op[0]);
+         inst = bld.emit(FS_OPCODE_DDX_COARSE, result, op[0]);
       }
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fddx_fine:
-      inst = emit(FS_OPCODE_DDX_FINE, result, op[0]);
+      inst = bld.emit(FS_OPCODE_DDX_FINE, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fddx_coarse:
-      inst = emit(FS_OPCODE_DDX_COARSE, result, op[0]);
+      inst = bld.emit(FS_OPCODE_DDX_COARSE, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fddy:
       if (fs_key->high_quality_derivatives) {
-         inst = emit(FS_OPCODE_DDY_FINE, result, op[0],
-                     fs_reg(fs_key->render_to_fbo));
+         inst = bld.emit(FS_OPCODE_DDY_FINE, result, op[0],
+                         fs_reg(fs_key->render_to_fbo));
       } else {
-         inst = emit(FS_OPCODE_DDY_COARSE, result, op[0],
-                     fs_reg(fs_key->render_to_fbo));
+         inst = bld.emit(FS_OPCODE_DDY_COARSE, result, op[0],
+                         fs_reg(fs_key->render_to_fbo));
       }
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fddy_fine:
-      inst = emit(FS_OPCODE_DDY_FINE, result, op[0],
-                  fs_reg(fs_key->render_to_fbo));
+      inst = bld.emit(FS_OPCODE_DDY_FINE, result, op[0],
+                      fs_reg(fs_key->render_to_fbo));
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fddy_coarse:
-      inst = emit(FS_OPCODE_DDY_COARSE, result, op[0],
-                  fs_reg(fs_key->render_to_fbo));
+      inst = bld.emit(FS_OPCODE_DDY_COARSE, result, op[0],
+                      fs_reg(fs_key->render_to_fbo));
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fadd:
    case nir_op_iadd:
-      inst = emit(ADD(result, op[0], op[1]));
+      inst = bld.ADD(result, op[0], op[1]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fmul:
-      inst = emit(MUL(result, op[0], op[1]));
+      inst = bld.MUL(result, op[0], op[1]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_imul:
-      emit(MUL(result, op[0], op[1]));
+      bld.MUL(result, op[0], op[1]);
       break;
 
    case nir_op_imul_high:
@@ -794,8 +792,8 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
 
       struct brw_reg acc = retype(brw_acc_reg(dispatch_width), result.type);
 
-      fs_inst *mul = emit(MUL(acc, op[0], op[1]));
-      emit(MACH(result, op[0], op[1]));
+      fs_inst *mul = bld.MUL(acc, op[0], op[1]);
+      bld.MACH(result, op[0], op[1]);
 
       /* Until Gen8, integer multiplies read 32-bits from one source, and
        * 16-bits from the other, and relying on the MACH instruction to
@@ -823,85 +821,67 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
 
    case nir_op_idiv:
    case nir_op_udiv:
-      emit_math(SHADER_OPCODE_INT_QUOTIENT, result, op[0], op[1]);
+      bld.emit(SHADER_OPCODE_INT_QUOTIENT, result, op[0], op[1]);
       break;
 
-   case nir_op_uadd_carry: {
-      if (devinfo->gen >= 7)
-         no16("SIMD16 explicit accumulator operands unsupported\n");
-
-      struct brw_reg acc = retype(brw_acc_reg(dispatch_width),
-                                  BRW_REGISTER_TYPE_UD);
+   case nir_op_uadd_carry:
+      unreachable("Should have been lowered by carry_to_arith().");
 
-      emit(ADDC(reg_null_ud, op[0], op[1]));
-      emit(MOV(result, fs_reg(acc)));
-      break;
-   }
-
-   case nir_op_usub_borrow: {
-      if (devinfo->gen >= 7)
-         no16("SIMD16 explicit accumulator operands unsupported\n");
-
-      struct brw_reg acc = retype(brw_acc_reg(dispatch_width),
-                                  BRW_REGISTER_TYPE_UD);
-
-      emit(SUBB(reg_null_ud, op[0], op[1]));
-      emit(MOV(result, fs_reg(acc)));
-      break;
-   }
+   case nir_op_usub_borrow:
+      unreachable("Should have been lowered by borrow_to_arith().");
 
    case nir_op_umod:
-      emit_math(SHADER_OPCODE_INT_REMAINDER, result, op[0], op[1]);
+      bld.emit(SHADER_OPCODE_INT_REMAINDER, result, op[0], op[1]);
       break;
 
    case nir_op_flt:
    case nir_op_ilt:
    case nir_op_ult:
-      emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_L));
+      bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_L);
       break;
 
    case nir_op_fge:
    case nir_op_ige:
    case nir_op_uge:
-      emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_GE));
+      bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_GE);
       break;
 
    case nir_op_feq:
    case nir_op_ieq:
-      emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_Z));
+      bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_Z);
       break;
 
    case nir_op_fne:
    case nir_op_ine:
-      emit(CMP(result, op[0], op[1], BRW_CONDITIONAL_NZ));
+      bld.CMP(result, op[0], op[1], BRW_CONDITIONAL_NZ);
       break;
 
    case nir_op_inot:
       if (devinfo->gen >= 8) {
          resolve_source_modifiers(&op[0]);
       }
-      emit(NOT(result, op[0]));
+      bld.NOT(result, op[0]);
       break;
    case nir_op_ixor:
       if (devinfo->gen >= 8) {
          resolve_source_modifiers(&op[0]);
          resolve_source_modifiers(&op[1]);
       }
-      emit(XOR(result, op[0], op[1]));
+      bld.XOR(result, op[0], op[1]);
       break;
    case nir_op_ior:
       if (devinfo->gen >= 8) {
          resolve_source_modifiers(&op[0]);
          resolve_source_modifiers(&op[1]);
       }
-      emit(OR(result, op[0], op[1]));
+      bld.OR(result, op[0], op[1]);
       break;
    case nir_op_iand:
       if (devinfo->gen >= 8) {
          resolve_source_modifiers(&op[0]);
          resolve_source_modifiers(&op[1]);
       }
-      emit(AND(result, op[0], op[1]));
+      bld.AND(result, op[0], op[1]);
       break;
 
    case nir_op_fdot2:
@@ -949,53 +929,51 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
       unreachable("not reached: should be handled by ldexp_to_arith()");
 
    case nir_op_fsqrt:
-      inst = emit_math(SHADER_OPCODE_SQRT, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_SQRT, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_frsq:
-      inst = emit_math(SHADER_OPCODE_RSQ, result, op[0]);
+      inst = bld.emit(SHADER_OPCODE_RSQ, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_b2i:
-      emit(AND(result, op[0], fs_reg(1)));
-      break;
    case nir_op_b2f:
-      emit(AND(retype(result, BRW_REGISTER_TYPE_UD), op[0], fs_reg(0x3f800000u)));
+      bld.MOV(result, negate(op[0]));
       break;
 
    case nir_op_f2b:
-      emit(CMP(result, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ));
+      bld.CMP(result, op[0], fs_reg(0.0f), BRW_CONDITIONAL_NZ);
       break;
    case nir_op_i2b:
-      emit(CMP(result, op[0], fs_reg(0), BRW_CONDITIONAL_NZ));
+      bld.CMP(result, op[0], fs_reg(0), BRW_CONDITIONAL_NZ);
       break;
 
    case nir_op_ftrunc:
-      inst = emit(RNDZ(result, op[0]));
+      inst = bld.RNDZ(result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fceil: {
       op[0].negate = !op[0].negate;
       fs_reg temp = vgrf(glsl_type::float_type);
-      emit(RNDD(temp, op[0]));
+      bld.RNDD(temp, op[0]);
       temp.negate = true;
-      inst = emit(MOV(result, temp));
+      inst = bld.MOV(result, temp);
       inst->saturate = instr->dest.saturate;
       break;
    }
    case nir_op_ffloor:
-      inst = emit(RNDD(result, op[0]));
+      inst = bld.RNDD(result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_ffract:
-      inst = emit(FRC(result, op[0]));
+      inst = bld.FRC(result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_fround_even:
-      inst = emit(RNDE(result, op[0]));
+      inst = bld.RNDE(result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
@@ -1003,11 +981,11 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
    case nir_op_imin:
    case nir_op_umin:
       if (devinfo->gen >= 6) {
-         inst = emit(BRW_OPCODE_SEL, result, op[0], op[1]);
+         inst = bld.emit(BRW_OPCODE_SEL, result, op[0], op[1]);
          inst->conditional_mod = BRW_CONDITIONAL_L;
       } else {
-         emit(CMP(reg_null_d, op[0], op[1], BRW_CONDITIONAL_L));
-         inst = emit(SEL(result, op[0], op[1]));
+         bld.CMP(bld.null_reg_d(), op[0], op[1], BRW_CONDITIONAL_L);
+         inst = bld.SEL(result, op[0], op[1]);
          inst->predicate = BRW_PREDICATE_NORMAL;
       }
       inst->saturate = instr->dest.saturate;
@@ -1017,11 +995,11 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
    case nir_op_imax:
    case nir_op_umax:
       if (devinfo->gen >= 6) {
-         inst = emit(BRW_OPCODE_SEL, result, op[0], op[1]);
+         inst = bld.emit(BRW_OPCODE_SEL, result, op[0], op[1]);
          inst->conditional_mod = BRW_CONDITIONAL_GE;
       } else {
-         emit(CMP(reg_null_d, op[0], op[1], BRW_CONDITIONAL_GE));
-         inst = emit(SEL(result, op[0], op[1]));
+         bld.CMP(bld.null_reg_d(), op[0], op[1], BRW_CONDITIONAL_GE);
+         inst = bld.SEL(result, op[0], op[1]);
          inst->predicate = BRW_PREDICATE_NORMAL;
       }
       inst->saturate = instr->dest.saturate;
@@ -1040,57 +1018,57 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
       unreachable("not reached: should be handled by lower_packing_builtins");
 
    case nir_op_unpack_half_2x16_split_x:
-      inst = emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_X, result, op[0]);
+      inst = bld.emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_X, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
    case nir_op_unpack_half_2x16_split_y:
-      inst = emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_Y, result, op[0]);
+      inst = bld.emit(FS_OPCODE_UNPACK_HALF_2x16_SPLIT_Y, result, op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_fpow:
-      inst = emit_math(SHADER_OPCODE_POW, result, op[0], op[1]);
+      inst = bld.emit(SHADER_OPCODE_POW, result, op[0], op[1]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_bitfield_reverse:
-      emit(BFREV(result, op[0]));
+      bld.BFREV(result, op[0]);
       break;
 
    case nir_op_bit_count:
-      emit(CBIT(result, op[0]));
+      bld.CBIT(result, op[0]);
       break;
 
    case nir_op_ufind_msb:
    case nir_op_ifind_msb: {
-      emit(FBH(retype(result, BRW_REGISTER_TYPE_UD), op[0]));
+      bld.FBH(retype(result, BRW_REGISTER_TYPE_UD), op[0]);
 
       /* FBH counts from the MSB side, while GLSL's findMSB() wants the count
        * from the LSB side. If FBH didn't return an error (0xFFFFFFFF), then
        * subtract the result from 31 to convert the MSB count into an LSB count.
        */
 
-      emit(CMP(reg_null_d, result, fs_reg(-1), BRW_CONDITIONAL_NZ));
+      bld.CMP(bld.null_reg_d(), result, fs_reg(-1), BRW_CONDITIONAL_NZ);
       fs_reg neg_result(result);
       neg_result.negate = true;
-      inst = emit(ADD(result, neg_result, fs_reg(31)));
+      inst = bld.ADD(result, neg_result, fs_reg(31));
       inst->predicate = BRW_PREDICATE_NORMAL;
       break;
    }
 
    case nir_op_find_lsb:
-      emit(FBL(result, op[0]));
+      bld.FBL(result, op[0]);
       break;
 
    case nir_op_ubitfield_extract:
    case nir_op_ibitfield_extract:
-      emit(BFE(result, op[2], op[1], op[0]));
+      bld.BFE(result, op[2], op[1], op[0]);
       break;
    case nir_op_bfm:
-      emit(BFI1(result, op[0], op[1]));
+      bld.BFI1(result, op[0], op[1]);
       break;
    case nir_op_bfi:
-      emit(BFI2(result, op[0], op[1], op[2]));
+      bld.BFI2(result, op[0], op[1], op[2]);
       break;
 
    case nir_op_bitfield_insert:
@@ -1098,26 +1076,26 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
                   "lower_instructions::bitfield_insert_to_bfm_bfi");
 
    case nir_op_ishl:
-      emit(SHL(result, op[0], op[1]));
+      bld.SHL(result, op[0], op[1]);
       break;
    case nir_op_ishr:
-      emit(ASR(result, op[0], op[1]));
+      bld.ASR(result, op[0], op[1]);
       break;
    case nir_op_ushr:
-      emit(SHR(result, op[0], op[1]));
+      bld.SHR(result, op[0], op[1]);
       break;
 
    case nir_op_pack_half_2x16_split:
-      emit(FS_OPCODE_PACK_HALF_2x16_SPLIT, result, op[0], op[1]);
+      bld.emit(FS_OPCODE_PACK_HALF_2x16_SPLIT, result, op[0], op[1]);
       break;
 
    case nir_op_ffma:
-      inst = emit(MAD(result, op[2], op[1], op[0]));
+      inst = bld.MAD(result, op[2], op[1], op[0]);
       inst->saturate = instr->dest.saturate;
       break;
 
    case nir_op_flrp:
-      inst = emit_lrp(result, op[0], op[1], op[2]);
+      inst = bld.LRP(result, op[0], op[1], op[2]);
       inst->saturate = instr->dest.saturate;
       break;
 
@@ -1125,8 +1103,8 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
       if (optimize_frontfacing_ternary(instr, result))
          return;
 
-      emit(CMP(reg_null_d, op[0], fs_reg(0), BRW_CONDITIONAL_NZ));
-      inst = emit(SEL(result, op[1], op[2]));
+      bld.CMP(bld.null_reg_d(), op[0], fs_reg(0), BRW_CONDITIONAL_NZ);
+      inst = bld.SEL(result, op[1], op[2]);
       inst->predicate = BRW_PREDICATE_NORMAL;
       break;
 
@@ -1140,29 +1118,48 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
    if (devinfo->gen <= 5 &&
        (instr->instr.pass_flags & BRW_NIR_BOOLEAN_MASK) == BRW_NIR_BOOLEAN_NEEDS_RESOLVE) {
       fs_reg masked = vgrf(glsl_type::int_type);
-      emit(AND(masked, result, fs_reg(1)));
+      bld.AND(masked, result, fs_reg(1));
       masked.negate = true;
-      emit(MOV(retype(result, BRW_REGISTER_TYPE_D), masked));
+      bld.MOV(retype(result, BRW_REGISTER_TYPE_D), masked);
    }
 }
 
+void
+fs_visitor::nir_emit_load_const(const fs_builder &bld,
+                                nir_load_const_instr *instr)
+{
+   fs_reg reg = bld.vgrf(BRW_REGISTER_TYPE_D, instr->def.num_components);
+
+   for (unsigned i = 0; i < instr->def.num_components; i++)
+      bld.MOV(offset(reg, bld, i), fs_reg(instr->value.i[i]));
+
+   nir_ssa_values[instr->def.index] = reg;
+}
+
+void
+fs_visitor::nir_emit_undef(const fs_builder &bld, nir_ssa_undef_instr *instr)
+{
+   nir_ssa_values[instr->def.index] = bld.vgrf(BRW_REGISTER_TYPE_D,
+                                               instr->def.num_components);
+}
+
 static fs_reg
 fs_reg_for_nir_reg(fs_visitor *v, nir_register *nir_reg,
                    unsigned base_offset, nir_src *indirect)
 {
    fs_reg reg;
-   if (nir_reg->is_global)
-      reg = v->nir_globals[nir_reg->index];
-   else
-      reg = v->nir_locals[nir_reg->index];
 
-   reg = offset(reg, base_offset * nir_reg->num_components);
+   assert(!nir_reg->is_global);
+
+   reg = v->nir_locals[nir_reg->index];
+
+   reg = offset(reg, v->bld, base_offset * nir_reg->num_components);
    if (indirect) {
       int multiplier = nir_reg->num_components * (v->dispatch_width / 8);
 
       reg.reladdr = new(v->mem_ctx) fs_reg(v->vgrf(glsl_type::int_type));
-      v->emit(v->MUL(*reg.reladdr, v->get_nir_src(*indirect),
-                     fs_reg(multiplier)));
+      v->bld.MUL(*reg.reladdr, v->get_nir_src(*indirect),
+                 fs_reg(multiplier));
    }
 
    return reg;
@@ -1171,54 +1168,54 @@ fs_reg_for_nir_reg(fs_visitor *v, nir_register *nir_reg,
 fs_reg
 fs_visitor::get_nir_src(nir_src src)
 {
+   fs_reg reg;
    if (src.is_ssa) {
-      assert(src.ssa->parent_instr->type == nir_instr_type_load_const);
-      nir_load_const_instr *load = nir_instr_as_load_const(src.ssa->parent_instr);
-      fs_reg reg = vgrf(src.ssa->num_components);
-      reg.type = BRW_REGISTER_TYPE_D;
-
-      for (unsigned i = 0; i < src.ssa->num_components; ++i)
-         emit(MOV(offset(reg, i), fs_reg(load->value.i[i])));
-
-      return reg;
+      reg = nir_ssa_values[src.ssa->index];
    } else {
-      fs_reg reg = fs_reg_for_nir_reg(this, src.reg.reg, src.reg.base_offset,
-                                      src.reg.indirect);
-
-      /* to avoid floating-point denorm flushing problems, set the type by
-       * default to D - instructions that need floating point semantics will set
-       * this to F if they need to
-       */
-      return retype(reg, BRW_REGISTER_TYPE_D);
+      reg = fs_reg_for_nir_reg(this, src.reg.reg, src.reg.base_offset,
+                               src.reg.indirect);
    }
+
+   /* to avoid floating-point denorm flushing problems, set the type by
+    * default to D - instructions that need floating point semantics will set
+    * this to F if they need to
+    */
+   return retype(reg, BRW_REGISTER_TYPE_D);
 }
 
 fs_reg
 fs_visitor::get_nir_dest(nir_dest dest)
 {
+   if (dest.is_ssa) {
+      nir_ssa_values[dest.ssa.index] = bld.vgrf(BRW_REGISTER_TYPE_F,
+                                                dest.ssa.num_components);
+      return nir_ssa_values[dest.ssa.index];
+   }
+
    return fs_reg_for_nir_reg(this, dest.reg.reg, dest.reg.base_offset,
                              dest.reg.indirect);
 }
 
 void
-fs_visitor::emit_percomp(fs_inst *inst, unsigned wr_mask)
+fs_visitor::emit_percomp(const fs_builder &bld, const fs_inst &inst,
+                         unsigned wr_mask)
 {
    for (unsigned i = 0; i < 4; i++) {
       if (!((wr_mask >> i) & 1))
          continue;
 
-      fs_inst *new_inst = new(mem_ctx) fs_inst(*inst);
-      new_inst->dst = offset(new_inst->dst, i);
+      fs_inst *new_inst = new(mem_ctx) fs_inst(inst);
+      new_inst->dst = offset(new_inst->dst, bld, i);
       for (unsigned j = 0; j < new_inst->sources; j++)
-         if (inst->src[j].file == GRF)
-            new_inst->src[j] = offset(new_inst->src[j], i);
+         if (new_inst->src[j].file == GRF)
+            new_inst->src[j] = offset(new_inst->src[j], bld, i);
 
-      emit(new_inst);
+      bld.emit(new_inst);
    }
 }
 
 void
-fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
+fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr)
 {
    fs_reg dest;
    if (nir_intrinsic_infos[instr->intrinsic].has_dest)
@@ -1236,12 +1233,12 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
        */
       fs_inst *cmp;
       if (instr->intrinsic == nir_intrinsic_discard_if) {
-         cmp = emit(CMP(reg_null_f, get_nir_src(instr->src[0]),
-                        fs_reg(0), BRW_CONDITIONAL_Z));
+         cmp = bld.CMP(bld.null_reg_f(), get_nir_src(instr->src[0]),
+                       fs_reg(0), BRW_CONDITIONAL_Z);
       } else {
          fs_reg some_reg = fs_reg(retype(brw_vec8_grf(0, 0),
                                        BRW_REGISTER_TYPE_UW));
-         cmp = emit(CMP(reg_null_f, some_reg, some_reg, BRW_CONDITIONAL_NZ));
+         cmp = bld.CMP(bld.null_reg_f(), some_reg, some_reg, BRW_CONDITIONAL_NZ);
       }
       cmp->predicate = BRW_PREDICATE_NORMAL;
       cmp->flag_subreg = 1;
@@ -1255,31 +1252,52 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
    case nir_intrinsic_atomic_counter_inc:
    case nir_intrinsic_atomic_counter_dec:
    case nir_intrinsic_atomic_counter_read: {
-      unsigned surf_index = prog_data->binding_table.abo_start +
-                            (unsigned) instr->const_index[0];
-      fs_reg offset = fs_reg(get_nir_src(instr->src[0]));
+      using namespace surface_access;
+
+      /* Get the arguments of the atomic intrinsic. */
+      const fs_reg offset = get_nir_src(instr->src[0]);
+      const unsigned surface = (stage_prog_data->binding_table.abo_start +
+                                instr->const_index[0]);
+      fs_reg tmp;
 
+      /* Emit a surface read or atomic op. */
       switch (instr->intrinsic) {
-         case nir_intrinsic_atomic_counter_inc:
-            emit_untyped_atomic(BRW_AOP_INC, surf_index, dest, offset,
-                                fs_reg(), fs_reg());
-            break;
-         case nir_intrinsic_atomic_counter_dec:
-            emit_untyped_atomic(BRW_AOP_PREDEC, surf_index, dest, offset,
-                                fs_reg(), fs_reg());
-            break;
-         case nir_intrinsic_atomic_counter_read:
-            emit_untyped_surface_read(surf_index, dest, offset);
-            break;
-         default:
-            unreachable("Unreachable");
+      case nir_intrinsic_atomic_counter_read:
+         tmp = emit_untyped_read(bld, fs_reg(surface), offset, 1, 1);
+         break;
+
+      case nir_intrinsic_atomic_counter_inc:
+         tmp = emit_untyped_atomic(bld, fs_reg(surface), offset, fs_reg(),
+                                   fs_reg(), 1, 1, BRW_AOP_INC);
+         break;
+
+      case nir_intrinsic_atomic_counter_dec:
+         tmp = emit_untyped_atomic(bld, fs_reg(surface), offset, fs_reg(),
+                                   fs_reg(), 1, 1, BRW_AOP_PREDEC);
+         break;
+
+      default:
+         unreachable("Unreachable");
       }
+
+      /* Assign the result. */
+      bld.MOV(retype(dest, BRW_REGISTER_TYPE_UD), tmp);
+
+      /* Mark the surface as used. */
+      brw_mark_surface_used(stage_prog_data, surface);
+      break;
+   }
+
+   case nir_intrinsic_memory_barrier: {
+      const fs_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD, 16 / dispatch_width);
+      bld.emit(SHADER_OPCODE_MEMORY_FENCE, tmp)
+         ->regs_written = 2;
       break;
    }
 
    case nir_intrinsic_load_front_face:
-      emit(MOV(retype(dest, BRW_REGISTER_TYPE_D),
-               *emit_frontfacing_interpolation()));
+      bld.MOV(retype(dest, BRW_REGISTER_TYPE_D),
+              *emit_frontfacing_interpolation());
       break;
 
    case nir_intrinsic_load_vertex_id:
@@ -1289,7 +1307,7 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg vertex_id = nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
       assert(vertex_id.file != BAD_FILE);
       dest.type = vertex_id.type;
-      emit(MOV(dest, vertex_id));
+      bld.MOV(dest, vertex_id);
       break;
    }
 
@@ -1297,7 +1315,7 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg base_vertex = nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
       assert(base_vertex.file != BAD_FILE);
       dest.type = base_vertex.type;
-      emit(MOV(dest, base_vertex));
+      bld.MOV(dest, base_vertex);
       break;
    }
 
@@ -1305,7 +1323,7 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg instance_id = nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
       assert(instance_id.file != BAD_FILE);
       dest.type = instance_id.type;
-      emit(MOV(dest, instance_id));
+      bld.MOV(dest, instance_id);
       break;
    }
 
@@ -1313,7 +1331,7 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg sample_mask_in = nir_system_values[SYSTEM_VALUE_SAMPLE_MASK_IN];
       assert(sample_mask_in.file != BAD_FILE);
       dest.type = sample_mask_in.type;
-      emit(MOV(dest, sample_mask_in));
+      bld.MOV(dest, sample_mask_in);
       break;
    }
 
@@ -1321,8 +1339,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg sample_pos = nir_system_values[SYSTEM_VALUE_SAMPLE_POS];
       assert(sample_pos.file != BAD_FILE);
       dest.type = sample_pos.type;
-      emit(MOV(dest, sample_pos));
-      emit(MOV(offset(dest, 1), offset(sample_pos, 1)));
+      bld.MOV(dest, sample_pos);
+      bld.MOV(offset(dest, bld, 1), offset(sample_pos, bld, 1));
       break;
    }
 
@@ -1330,7 +1348,7 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg sample_id = nir_system_values[SYSTEM_VALUE_SAMPLE_ID];
       assert(sample_id.file != BAD_FILE);
       dest.type = sample_id.type;
-      emit(MOV(dest, sample_id));
+      bld.MOV(dest, sample_id);
       break;
    }
 
@@ -1349,13 +1367,13 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       }
 
       for (unsigned j = 0; j < instr->num_components; j++) {
-         fs_reg src = offset(retype(uniform_reg, dest.type), index);
+         fs_reg src = offset(retype(uniform_reg, dest.type), bld, index);
          if (has_indirect)
             src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
          index++;
 
-         emit(MOV(dest, src));
-         dest = offset(dest, 1);
+         bld.MOV(dest, src);
+         dest = offset(dest, bld, 1);
       }
       break;
    }
@@ -1376,9 +1394,9 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
           * from any live channel.
           */
          surf_index = vgrf(glsl_type::uint_type);
-         emit(ADD(surf_index, get_nir_src(instr->src[0]),
-                  fs_reg(stage_prog_data->binding_table.ubo_start)));
-         emit_uniformize(surf_index, surf_index);
+         bld.ADD(surf_index, get_nir_src(instr->src[0]),
+                 fs_reg(stage_prog_data->binding_table.ubo_start));
+         surf_index = bld.emit_uniformize(surf_index);
 
          /* Assume this may touch any UBO. It would be nice to provide
           * a tighter bound, but the array information is already lowered away.
@@ -1391,21 +1409,21 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       if (has_indirect) {
          /* Turn the byte offset into a dword offset. */
          fs_reg base_offset = vgrf(glsl_type::int_type);
-         emit(SHR(base_offset, retype(get_nir_src(instr->src[1]),
-                                 BRW_REGISTER_TYPE_D),
-                  fs_reg(2)));
+         bld.SHR(base_offset, retype(get_nir_src(instr->src[1]),
+                                     BRW_REGISTER_TYPE_D),
+                 fs_reg(2));
 
          unsigned vec4_offset = instr->const_index[0] / 4;
          for (int i = 0; i < instr->num_components; i++)
-            VARYING_PULL_CONSTANT_LOAD(bld, offset(dest, i), surf_index,
+            VARYING_PULL_CONSTANT_LOAD(bld, offset(dest, bld, i), surf_index,
                                        base_offset, vec4_offset + i);
       } else {
          fs_reg packed_consts = vgrf(glsl_type::float_type);
          packed_consts.type = dest.type;
 
          fs_reg const_offset_reg((unsigned) instr->const_index[0] & ~15);
-         emit(FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD, packed_consts,
-              surf_index, const_offset_reg);
+         bld.emit(FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD, packed_consts,
+                  surf_index, const_offset_reg);
 
          for (unsigned i = 0; i < instr->num_components; i++) {
             packed_consts.set_smear(instr->const_index[0] % 16 / 4 + i);
@@ -1415,8 +1433,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
              */
             assert(packed_consts.subreg_offset < 32);
 
-            emit(MOV(dest, packed_consts));
-            dest = offset(dest, 1);
+            bld.MOV(dest, packed_consts);
+            dest = offset(dest, bld, 1);
          }
       }
       break;
@@ -1428,14 +1446,14 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
    case nir_intrinsic_load_input: {
       unsigned index = 0;
       for (unsigned j = 0; j < instr->num_components; j++) {
-         fs_reg src = offset(retype(nir_inputs, dest.type),
+         fs_reg src = offset(retype(nir_inputs, dest.type), bld,
                              instr->const_index[0] + index);
          if (has_indirect)
             src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[0]));
          index++;
 
-         emit(MOV(dest, src));
-         dest = offset(dest, 1);
+         bld.MOV(dest, src);
+         dest = offset(dest, bld, 1);
       }
       break;
    }
@@ -1461,13 +1479,11 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
    case nir_intrinsic_interp_var_at_centroid:
    case nir_intrinsic_interp_var_at_sample:
    case nir_intrinsic_interp_var_at_offset: {
-      /* in SIMD16 mode, the pixel interpolator returns coords interleaved
-       * 8 channels at a time, same as the barycentric coords presented in
-       * the FS payload. this requires a bit of extra work to support.
-       */
-      no16("interpolate_at_* not yet supported in SIMD16 mode.");
+      assert(stage == MESA_SHADER_FRAGMENT);
+
+      ((struct brw_wm_prog_data *) prog_data)->pulls_bary = true;
 
-      fs_reg dst_xy = vgrf(2);
+      fs_reg dst_xy = bld.vgrf(BRW_REGISTER_TYPE_F, 2);
 
       /* For most messages, we need one reg of ignored data; the hardware
        * requires mlen==1 even when there is no payload. in the per-slot
@@ -1479,7 +1495,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
 
       switch (instr->intrinsic) {
       case nir_intrinsic_interp_var_at_centroid:
-         inst = emit(FS_OPCODE_INTERPOLATE_AT_CENTROID, dst_xy, src, fs_reg(0u));
+         inst = bld.emit(FS_OPCODE_INTERPOLATE_AT_CENTROID,
+                         dst_xy, src, fs_reg(0u));
          break;
 
       case nir_intrinsic_interp_var_at_sample: {
@@ -1487,8 +1504,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
          nir_const_value *const_sample = nir_src_as_const_value(instr->src[0]);
          assert(const_sample);
          unsigned msg_data = const_sample ? const_sample->i[0] << 4 : 0;
-         inst = emit(FS_OPCODE_INTERPOLATE_AT_SAMPLE, dst_xy, src,
-                     fs_reg(msg_data));
+         inst = bld.emit(FS_OPCODE_INTERPOLATE_AT_SAMPLE, dst_xy, src,
+                         fs_reg(msg_data));
          break;
       }
 
@@ -1499,17 +1516,17 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
             unsigned off_x = MIN2((int)(const_offset->f[0] * 16), 7) & 0xf;
             unsigned off_y = MIN2((int)(const_offset->f[1] * 16), 7) & 0xf;
 
-            inst = emit(FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET, dst_xy, src,
-                        fs_reg(off_x | (off_y << 4)));
+            inst = bld.emit(FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET, dst_xy, src,
+                            fs_reg(off_x | (off_y << 4)));
          } else {
             src = vgrf(glsl_type::ivec2_type);
             fs_reg offset_src = retype(get_nir_src(instr->src[0]),
                                        BRW_REGISTER_TYPE_F);
             for (int i = 0; i < 2; i++) {
                fs_reg temp = vgrf(glsl_type::float_type);
-               emit(MUL(temp, offset(offset_src, i), fs_reg(16.0f)));
+               bld.MUL(temp, offset(offset_src, bld, i), fs_reg(16.0f));
                fs_reg itemp = vgrf(glsl_type::int_type);
-               emit(MOV(itemp, temp));  /* float to int */
+               bld.MOV(itemp, temp);  /* float to int */
 
                /* Clamp the upper end of the range to +7/16.
                 * ARB_gpu_shader5 requires that we support a maximum offset
@@ -1526,14 +1543,13 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
                 * implementation-dependent constant
                 * FRAGMENT_INTERPOLATION_OFFSET_BITS"
                 */
-
-               emit(BRW_OPCODE_SEL, offset(src, i), itemp, fs_reg(7))
-                   ->conditional_mod = BRW_CONDITIONAL_L; /* min(src2, 7) */
+               set_condmod(BRW_CONDITIONAL_L,
+                           bld.SEL(offset(src, bld, i), itemp, fs_reg(7)));
             }
 
-            mlen = 2;
-            inst = emit(FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET, dst_xy, src,
-                        fs_reg(0u));
+            mlen = 2 * dispatch_width / 8;
+            inst = bld.emit(FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET, dst_xy, src,
+                            fs_reg(0u));
          }
          break;
       }
@@ -1543,7 +1559,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       }
 
       inst->mlen = mlen;
-      inst->regs_written = 2; /* 2 floats per slot returned */
+      /* 2 floats per slot returned */
+      inst->regs_written = 2 * dispatch_width / 8;
       inst->pi_noperspective = instr->variables[0]->var->data.interpolation ==
                                INTERP_QUALIFIER_NOPERSPECTIVE;
 
@@ -1551,8 +1568,8 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
          fs_reg src = interp_reg(instr->variables[0]->var->data.location, j);
          src.type = dest.type;
 
-         emit(FS_OPCODE_LINTERP, dest, dst_xy, src);
-         dest = offset(dest, 1);
+         bld.emit(FS_OPCODE_LINTERP, dest, dst_xy, src);
+         dest = offset(dest, bld, 1);
       }
       break;
    }
@@ -1564,24 +1581,28 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
       fs_reg src = get_nir_src(instr->src[0]);
       unsigned index = 0;
       for (unsigned j = 0; j < instr->num_components; j++) {
-         fs_reg new_dest = offset(retype(nir_outputs, src.type),
+         fs_reg new_dest = offset(retype(nir_outputs, src.type), bld,
                                   instr->const_index[0] + index);
          if (has_indirect)
             src.reladdr = new(mem_ctx) fs_reg(get_nir_src(instr->src[1]));
          index++;
-         emit(MOV(new_dest, src));
-         src = offset(src, 1);
+         bld.MOV(new_dest, src);
+         src = offset(src, bld, 1);
       }
       break;
    }
 
+   case nir_intrinsic_barrier:
+      emit_barrier();
+      break;
+
    default:
       unreachable("unknown intrinsic");
    }
 }
 
 void
-fs_visitor::nir_emit_texture(nir_tex_instr *instr)
+fs_visitor::nir_emit_texture(const fs_builder &bld, nir_tex_instr *instr)
 {
    unsigned sampler = instr->sampler_index;
    fs_reg sampler_reg(sampler);
@@ -1599,7 +1620,8 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
    bool is_cube_array = instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE &&
                         instr->is_array;
 
-   int lod_components = 0, offset_components = 0;
+   int lod_components = 0;
+   int UNUSED offset_components = 0;
 
    fs_reg coordinate, shadow_comparitor, lod, lod2, sample_index, mcs, tex_offset;
 
@@ -1668,8 +1690,8 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
 
          /* Emit code to evaluate the actual indexing expression */
          sampler_reg = vgrf(glsl_type::uint_type);
-         emit(ADD(sampler_reg, src, fs_reg(sampler)));
-         emit_uniformize(sampler_reg, sampler_reg);
+         bld.ADD(sampler_reg, src, fs_reg(sampler));
+         sampler_reg = bld.emit_uniformize(sampler_reg);
          break;
       }
 
@@ -1738,18 +1760,20 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
    fs_reg dest = get_nir_dest(instr->dest);
    dest.type = this->result.type;
    unsigned num_components = nir_tex_instr_dest_size(instr);
-   emit_percomp(MOV(dest, this->result), (1 << num_components) - 1);
+   emit_percomp(bld, fs_inst(BRW_OPCODE_MOV, bld.dispatch_width(),
+                             dest, this->result),
+                (1 << num_components) - 1);
 }
 
 void
-fs_visitor::nir_emit_jump(nir_jump_instr *instr)
+fs_visitor::nir_emit_jump(const fs_builder &bld, nir_jump_instr *instr)
 {
    switch (instr->type) {
    case nir_jump_break:
-      emit(BRW_OPCODE_BREAK);
+      bld.emit(BRW_OPCODE_BREAK);
       break;
    case nir_jump_continue:
-      emit(BRW_OPCODE_CONTINUE);
+      bld.emit(BRW_OPCODE_CONTINUE);
       break;
    case nir_jump_return:
    default: