X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fglsl%2Fnir%2Fglsl_to_nir.cpp;h=6d24341ce01854381c208904ac1456691cfe65f3;hb=d564b5b58e8955f807e330364ff534ce57c99d8c;hp=357944da64ab570bbc9b02df73e198d507bb028a;hpb=639115123efe7f71d432e24b1719adda7d23e97e;p=mesa.git

diff --git a/src/glsl/nir/glsl_to_nir.cpp b/src/glsl/nir/glsl_to_nir.cpp
index 357944da64a..6d24341ce01 100644
--- a/src/glsl/nir/glsl_to_nir.cpp
+++ b/src/glsl/nir/glsl_to_nir.cpp
@@ -26,9 +26,12 @@
  */
 
 #include "glsl_to_nir.h"
+#include "nir_control_flow.h"
+#include "nir_builder.h"
 #include "ir_visitor.h"
 #include "ir_hierarchical_visitor.h"
 #include "ir.h"
+#include "main/imports.h"
 
 /*
  * pass to lower GLSL IR to NIR
@@ -43,7 +46,7 @@ namespace {
 class nir_visitor : public ir_visitor
 {
 public:
-   nir_visitor(nir_shader *shader, gl_shader_stage stage);
+   nir_visitor(nir_shader *shader);
    ~nir_visitor();
 
    virtual void visit(ir_variable *);
@@ -65,28 +68,30 @@ public:
    virtual void visit(ir_dereference_variable *);
    virtual void visit(ir_dereference_record *);
    virtual void visit(ir_dereference_array *);
+   virtual void visit(ir_barrier *);
 
    void create_function(ir_function *ir);
 
 private:
    void create_overload(ir_function_signature *ir, nir_function *function);
    void add_instr(nir_instr *instr, unsigned num_components);
-   nir_src evaluate_rvalue(ir_rvalue *ir);
+   nir_ssa_def *evaluate_rvalue(ir_rvalue *ir);
 
-   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src *srcs);
-   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1);
-   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1,
-                       nir_src src2);
-   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_src src1,
-                       nir_src src2, nir_src src3);
+   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_ssa_def **srcs);
+   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_ssa_def *src1);
+   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_ssa_def *src1,
+                       nir_ssa_def *src2);
+   nir_alu_instr *emit(nir_op op, unsigned dest_size, nir_ssa_def *src1,
+                       nir_ssa_def *src2, nir_ssa_def *src3);
 
    bool supports_ints;
 
    nir_shader *shader;
-   gl_shader_stage stage;
    nir_function_impl *impl;
-   exec_list *cf_node_list;
-   nir_instr *result; /* result of the expression tree last visited */
+   nir_builder b;
+   nir_ssa_def *result; /* result of the expression tree last visited */
+
+   nir_deref_var *evaluate_deref(nir_instr *mem_ctx, ir_instruction *ir);
 
    /* the head of the dereference chain we're creating */
    nir_deref_var *deref_head;
@@ -126,23 +131,80 @@ private:
 }; /* end of anonymous namespace */
 
 nir_shader *
-glsl_to_nir(struct gl_shader *sh, const nir_shader_compiler_options *options)
+glsl_to_nir(const struct gl_shader_program *shader_prog,
+            gl_shader_stage stage,
+            const nir_shader_compiler_options *options)
 {
-   nir_shader *shader = nir_shader_create(NULL, options);
+   struct gl_shader *sh = shader_prog->_LinkedShaders[stage];
+
+   nir_shader *shader = nir_shader_create(NULL, stage, options);
 
-   nir_visitor v1(shader, sh->Stage);
+   nir_visitor v1(shader);
    nir_function_visitor v2(&v1);
    v2.run(sh->ir);
    visit_exec_list(sh->ir, &v1);
 
+   nir_lower_outputs_to_temporaries(shader);
+
+   shader->info.name = ralloc_asprintf(shader, "GLSL%d", shader_prog->Name);
+   if (shader_prog->Label)
+      shader->info.label = ralloc_strdup(shader, shader_prog->Label);
+   shader->info.num_textures = _mesa_fls(sh->Program->SamplersUsed);
+   shader->info.num_ubos = sh->NumUniformBlocks;
+   shader->info.num_abos = shader_prog->NumAtomicBuffers;
+   shader->info.num_ssbos = sh->NumShaderStorageBlocks;
+   shader->info.num_images = sh->NumImages;
+   shader->info.inputs_read = sh->Program->InputsRead;
+   shader->info.outputs_written = sh->Program->OutputsWritten;
+   shader->info.patch_inputs_read = sh->Program->PatchInputsRead;
+   shader->info.patch_outputs_written = sh->Program->PatchOutputsWritten;
+   shader->info.system_values_read = sh->Program->SystemValuesRead;
+   shader->info.uses_texture_gather = sh->Program->UsesGather;
+   shader->info.uses_clip_distance_out =
+      sh->Program->ClipDistanceArraySize != 0;
+   shader->info.separate_shader = shader_prog->SeparateShader;
+   shader->info.has_transform_feedback_varyings =
+      shader_prog->TransformFeedback.NumVarying > 0;
+
+   switch (stage) {
+   case MESA_SHADER_GEOMETRY:
+      shader->info.gs.vertices_in = shader_prog->Geom.VerticesIn;
+      shader->info.gs.output_primitive = sh->Geom.OutputType;
+      shader->info.gs.vertices_out = sh->Geom.VerticesOut;
+      shader->info.gs.invocations = sh->Geom.Invocations;
+      shader->info.gs.uses_end_primitive = shader_prog->Geom.UsesEndPrimitive;
+      shader->info.gs.uses_streams = shader_prog->Geom.UsesStreams;
+      break;
+
+   case MESA_SHADER_FRAGMENT: {
+      struct gl_fragment_program *fp =
+         (struct gl_fragment_program *)sh->Program;
+
+      shader->info.fs.uses_discard = fp->UsesKill;
+      shader->info.fs.early_fragment_tests = sh->EarlyFragmentTests;
+      shader->info.fs.depth_layout = fp->FragDepthLayout;
+      break;
+   }
+
+   case MESA_SHADER_COMPUTE: {
+      struct gl_compute_program *cp = (struct gl_compute_program *)sh->Program;
+      shader->info.cs.local_size[0] = cp->LocalSize[0];
+      shader->info.cs.local_size[1] = cp->LocalSize[1];
+      shader->info.cs.local_size[2] = cp->LocalSize[2];
+      break;
+   }
+
+   default:
+      break; /* No stage-specific info */
+   }
+
    return shader;
 }
 
-nir_visitor::nir_visitor(nir_shader *shader, gl_shader_stage stage)
+nir_visitor::nir_visitor(nir_shader *shader)
 {
    this->supports_ints = shader->options->native_integers;
    this->shader = shader;
-   this->stage = stage;
    this->is_global = true;
    this->var_table = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
                                              _mesa_key_pointer_equal);
@@ -156,6 +218,14 @@ nir_visitor::~nir_visitor()
    _mesa_hash_table_destroy(this->overload_table, NULL);
 }
 
+nir_deref_var *
+nir_visitor::evaluate_deref(nir_instr *mem_ctx, ir_instruction *ir)
+{
+   ir->accept(this);
+   ralloc_steal(mem_ctx, this->deref_head);
+   return this->deref_head;
+}
+
 static nir_constant *
 constant_copy(ir_constant *ir, void *mem_ctx)
 {
@@ -231,6 +301,7 @@ nir_visitor::visit(ir_variable *ir)
    var->data.read_only = ir->data.read_only;
    var->data.centroid = ir->data.centroid;
    var->data.sample = ir->data.sample;
+   var->data.patch = ir->data.patch;
    var->data.invariant = ir->data.invariant;
    var->data.location = ir->data.location;
 
@@ -251,11 +322,16 @@ nir_visitor::visit(ir_variable *ir)
       break;
 
    case ir_var_shader_in:
-      if (stage == MESA_SHADER_FRAGMENT &&
+      if (shader->stage == MESA_SHADER_FRAGMENT &&
           ir->data.location == VARYING_SLOT_FACE) {
          /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
          var->data.location = SYSTEM_VALUE_FRONT_FACE;
          var->data.mode = nir_var_system_value;
+      } else if (shader->stage == MESA_SHADER_GEOMETRY &&
+                 ir->data.location == VARYING_SLOT_PRIMITIVE_ID) {
+         /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
+         var->data.location = SYSTEM_VALUE_PRIMITIVE_ID;
+         var->data.mode = nir_var_system_value;
       } else {
          var->data.mode = nir_var_shader_in;
       }
@@ -269,6 +345,9 @@ nir_visitor::visit(ir_variable *ir)
       var->data.mode = nir_var_uniform;
       break;
 
+   case ir_var_shader_storage:
+      var->data.mode = nir_var_shader_storage;
+      break;
 
    case ir_var_system_value:
       var->data.mode = nir_var_system_value;
@@ -312,8 +391,6 @@ nir_visitor::visit(ir_variable *ir)
 
    var->data.index = ir->data.index;
    var->data.binding = ir->data.binding;
-   /* XXX Get rid of buffer_index */
-   var->data.atomic.buffer_index = ir->data.binding;
    var->data.atomic.offset = ir->data.atomic.offset;
    var->data.image.read_only = ir->data.image_read_only;
    var->data.image.write_only = ir->data.image_write_only;
@@ -342,34 +419,10 @@ nir_visitor::visit(ir_variable *ir)
 
    var->interface_type = ir->get_interface_type();
 
-   switch (var->data.mode) {
-   case nir_var_local:
-      exec_list_push_tail(&impl->locals, &var->node);
-      break;
-
-   case nir_var_global:
-      exec_list_push_tail(&shader->globals, &var->node);
-      break;
-
-   case nir_var_shader_in:
-      exec_list_push_tail(&shader->inputs, &var->node);
-      break;
-
-   case nir_var_shader_out:
-      exec_list_push_tail(&shader->outputs, &var->node);
-      break;
-
-   case nir_var_uniform:
-      exec_list_push_tail(&shader->uniforms, &var->node);
-      break;
-
-   case nir_var_system_value:
-      exec_list_push_tail(&shader->system_values, &var->node);
-      break;
-
-   default:
-      unreachable("not reached");
-   }
+   if (var->data.mode == nir_var_local)
+      nir_function_impl_add_variable(impl, var);
+   else
+      nir_shader_add_variable(shader, var);
 
    _mesa_hash_table_insert(var_table, ir, var);
    this->var = var;
@@ -478,7 +531,8 @@ nir_visitor::visit(ir_function_signature *ir)
 
       this->is_global = false;
 
-      this->cf_node_list = &impl->body;
+      nir_builder_init(&b, impl);
+      b.cursor = nir_after_cf_list(&impl->body);
       visit_exec_list(&ir->body, this);
 
       this->is_global = true;
@@ -490,34 +544,31 @@ nir_visitor::visit(ir_function_signature *ir)
 void
 nir_visitor::visit(ir_loop *ir)
 {
-   exec_list *old_list = this->cf_node_list;
-
    nir_loop *loop = nir_loop_create(this->shader);
-   nir_cf_node_insert_end(old_list, &loop->cf_node);
-   this->cf_node_list = &loop->body;
-   visit_exec_list(&ir->body_instructions, this);
+   nir_builder_cf_insert(&b, &loop->cf_node);
 
-   this->cf_node_list = old_list;
+   b.cursor = nir_after_cf_list(&loop->body);
+   visit_exec_list(&ir->body_instructions, this);
+   b.cursor = nir_after_cf_node(&loop->cf_node);
 }
 
 void
 nir_visitor::visit(ir_if *ir)
 {
-   nir_src condition = evaluate_rvalue(ir->condition);
-
-   exec_list *old_list = this->cf_node_list;
+   nir_src condition =
+      nir_src_for_ssa(evaluate_rvalue(ir->condition));
 
    nir_if *if_stmt = nir_if_create(this->shader);
    if_stmt->condition = condition;
-   nir_cf_node_insert_end(old_list, &if_stmt->cf_node);
+   nir_builder_cf_insert(&b, &if_stmt->cf_node);
 
-   this->cf_node_list = &if_stmt->then_list;
+   b.cursor = nir_after_cf_list(&if_stmt->then_list);
    visit_exec_list(&ir->then_instructions, this);
 
-   this->cf_node_list = &if_stmt->else_list;
+   b.cursor = nir_after_cf_list(&if_stmt->else_list);
    visit_exec_list(&ir->else_instructions, this);
 
-   this->cf_node_list = old_list;
+   b.cursor = nir_after_cf_node(&if_stmt->cf_node);
 }
 
 void
@@ -534,11 +585,13 @@ nir_visitor::visit(ir_discard *ir)
    if (ir->condition) {
       discard = nir_intrinsic_instr_create(this->shader,
                                            nir_intrinsic_discard_if);
-      discard->src[0] = evaluate_rvalue(ir->condition);
+      discard->src[0] =
+         nir_src_for_ssa(evaluate_rvalue(ir->condition));
    } else {
       discard = nir_intrinsic_instr_create(this->shader, nir_intrinsic_discard);
    }
-   nir_instr_insert_after_cf_list(this->cf_node_list, &discard->instr);
+
+   nir_builder_instr_insert(&b, &discard->instr);
 }
 
 void
@@ -547,7 +600,7 @@ nir_visitor::visit(ir_emit_vertex *ir)
    nir_intrinsic_instr *instr =
       nir_intrinsic_instr_create(this->shader, nir_intrinsic_emit_vertex);
    instr->const_index[0] = ir->stream_id();
-   nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+   nir_builder_instr_insert(&b, &instr->instr);
 }
 
 void
@@ -556,7 +609,7 @@ nir_visitor::visit(ir_end_primitive *ir)
    nir_intrinsic_instr *instr =
       nir_intrinsic_instr_create(this->shader, nir_intrinsic_end_primitive);
    instr->const_index[0] = ir->stream_id();
-   nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+   nir_builder_instr_insert(&b, &instr->instr);
 }
 
 void
@@ -575,24 +628,22 @@ nir_visitor::visit(ir_loop_jump *ir)
    }
 
    nir_jump_instr *instr = nir_jump_instr_create(this->shader, type);
-   nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+   nir_builder_instr_insert(&b, &instr->instr);
 }
 
 void
 nir_visitor::visit(ir_return *ir)
 {
    if (ir->value != NULL) {
-      ir->value->accept(this);
       nir_intrinsic_instr *copy =
          nir_intrinsic_instr_create(this->shader, nir_intrinsic_copy_var);
 
-      copy->variables[0] = nir_deref_var_create(this->shader,
-                                                this->impl->return_var);
-      copy->variables[1] = this->deref_head;
+      copy->variables[0] = nir_deref_var_create(copy, this->impl->return_var);
+      copy->variables[1] = evaluate_deref(&copy->instr, ir->value);
    }
 
    nir_jump_instr *instr = nir_jump_instr_create(this->shader, nir_jump_return);
-   nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+   nir_builder_instr_insert(&b, &instr->instr);
 }
 
 void
@@ -606,29 +657,338 @@ nir_visitor::visit(ir_call *ir)
          op = nir_intrinsic_atomic_counter_inc_var;
       } else if (strcmp(ir->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
          op = nir_intrinsic_atomic_counter_dec_var;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_load") == 0) {
+         op = nir_intrinsic_image_load;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_store") == 0) {
+         op = nir_intrinsic_image_store;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_add") == 0) {
+         op = nir_intrinsic_image_atomic_add;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_min") == 0) {
+         op = nir_intrinsic_image_atomic_min;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_max") == 0) {
+         op = nir_intrinsic_image_atomic_max;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_and") == 0) {
+         op = nir_intrinsic_image_atomic_and;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_or") == 0) {
+         op = nir_intrinsic_image_atomic_or;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
+         op = nir_intrinsic_image_atomic_xor;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
+         op = nir_intrinsic_image_atomic_exchange;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
+         op = nir_intrinsic_image_atomic_comp_swap;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier") == 0) {
+         op = nir_intrinsic_memory_barrier;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_size") == 0) {
+         op = nir_intrinsic_image_size;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_image_samples") == 0) {
+         op = nir_intrinsic_image_samples;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_store_ssbo") == 0) {
+         op = nir_intrinsic_store_ssbo;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_load_ssbo") == 0) {
+         op = nir_intrinsic_load_ssbo;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_add;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_and;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_or;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_xor;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
+         assert(ir->return_deref);
+         if (ir->return_deref->type == glsl_type::int_type)
+            op = nir_intrinsic_ssbo_atomic_imin;
+         else if (ir->return_deref->type == glsl_type::uint_type)
+            op = nir_intrinsic_ssbo_atomic_umin;
+         else
+            unreachable("Invalid type");
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
+         assert(ir->return_deref);
+         if (ir->return_deref->type == glsl_type::int_type)
+            op = nir_intrinsic_ssbo_atomic_imax;
+         else if (ir->return_deref->type == glsl_type::uint_type)
+            op = nir_intrinsic_ssbo_atomic_umax;
+         else
+            unreachable("Invalid type");
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_exchange;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
+         op = nir_intrinsic_ssbo_atomic_comp_swap;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_shader_clock") == 0) {
+         op = nir_intrinsic_shader_clock;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_group_memory_barrier") == 0) {
+         op = nir_intrinsic_group_memory_barrier;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier_atomic_counter") == 0) {
+         op = nir_intrinsic_memory_barrier_atomic_counter;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier_buffer") == 0) {
+         op = nir_intrinsic_memory_barrier_buffer;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier_image") == 0) {
+         op = nir_intrinsic_memory_barrier_image;
+      } else if (strcmp(ir->callee_name(), "__intrinsic_memory_barrier_shared") == 0) {
+         op = nir_intrinsic_memory_barrier_shared;
       } else {
          unreachable("not reached");
       }
 
       nir_intrinsic_instr *instr = nir_intrinsic_instr_create(shader, op);
-      ir_dereference *param =
-         (ir_dereference *) ir->actual_parameters.get_head();
-      param->accept(this);
-      instr->variables[0] = this->deref_head;
-      nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL);
+      nir_dest *dest = &instr->dest;
+
+      switch (op) {
+      case nir_intrinsic_atomic_counter_read_var:
+      case nir_intrinsic_atomic_counter_inc_var:
+      case nir_intrinsic_atomic_counter_dec_var: {
+         ir_dereference *param =
+            (ir_dereference *) ir->actual_parameters.get_head();
+         instr->variables[0] = evaluate_deref(&instr->instr, param);
+         nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL);
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      }
+      case nir_intrinsic_image_load:
+      case nir_intrinsic_image_store:
+      case nir_intrinsic_image_atomic_add:
+      case nir_intrinsic_image_atomic_min:
+      case nir_intrinsic_image_atomic_max:
+      case nir_intrinsic_image_atomic_and:
+      case nir_intrinsic_image_atomic_or:
+      case nir_intrinsic_image_atomic_xor:
+      case nir_intrinsic_image_atomic_exchange:
+      case nir_intrinsic_image_atomic_comp_swap:
+      case nir_intrinsic_image_samples:
+      case nir_intrinsic_image_size: {
+         nir_ssa_undef_instr *instr_undef =
+            nir_ssa_undef_instr_create(shader, 1);
+         nir_builder_instr_insert(&b, &instr_undef->instr);
+
+         /* Set the image variable dereference. */
+         exec_node *param = ir->actual_parameters.get_head();
+         ir_dereference *image = (ir_dereference *)param;
+         const glsl_type *type =
+            image->variable_referenced()->type->without_array();
+
+         instr->variables[0] = evaluate_deref(&instr->instr, image);
+         param = param->get_next();
+
+         /* Set the intrinsic destination. */
+         if (ir->return_deref) {
+            const nir_intrinsic_info *info =
+                    &nir_intrinsic_infos[instr->intrinsic];
+            nir_ssa_dest_init(&instr->instr, &instr->dest,
+                              info->dest_components, NULL);
+         }
 
-      nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+         if (op == nir_intrinsic_image_size ||
+             op == nir_intrinsic_image_samples) {
+            nir_builder_instr_insert(&b, &instr->instr);
+            break;
+         }
 
-      nir_intrinsic_instr *store_instr =
-         nir_intrinsic_instr_create(shader, nir_intrinsic_store_var);
-      store_instr->num_components = 1;
+         /* Set the address argument, extending the coordinate vector to four
+          * components.
+          */
+         nir_ssa_def *src_addr =
+            evaluate_rvalue((ir_dereference *)param);
+         nir_ssa_def *srcs[4];
+
+         for (int i = 0; i < 4; i++) {
+            if (i < type->coordinate_components())
+               srcs[i] = nir_channel(&b, src_addr, i);
+            else
+               srcs[i] = &instr_undef->def;
+         }
 
-      ir->return_deref->accept(this);
-      store_instr->variables[0] = this->deref_head;
-      store_instr->src[0].is_ssa = true;
-      store_instr->src[0].ssa = &instr->dest.ssa;
+         instr->src[0] = nir_src_for_ssa(nir_vec(&b, srcs, 4));
+         param = param->get_next();
 
-      nir_instr_insert_after_cf_list(this->cf_node_list, &store_instr->instr);
+         /* Set the sample argument, which is undefined for single-sample
+          * images.
+          */
+         if (type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS) {
+            instr->src[1] =
+               nir_src_for_ssa(evaluate_rvalue((ir_dereference *)param));
+            param = param->get_next();
+         } else {
+            instr->src[1] = nir_src_for_ssa(&instr_undef->def);
+         }
+
+         /* Set the intrinsic parameters. */
+         if (!param->is_tail_sentinel()) {
+            instr->src[2] =
+               nir_src_for_ssa(evaluate_rvalue((ir_dereference *)param));
+            param = param->get_next();
+         }
+
+         if (!param->is_tail_sentinel()) {
+            instr->src[3] =
+               nir_src_for_ssa(evaluate_rvalue((ir_dereference *)param));
+            param = param->get_next();
+         }
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      }
+      case nir_intrinsic_memory_barrier:
+      case nir_intrinsic_group_memory_barrier:
+      case nir_intrinsic_memory_barrier_atomic_counter:
+      case nir_intrinsic_memory_barrier_buffer:
+      case nir_intrinsic_memory_barrier_image:
+      case nir_intrinsic_memory_barrier_shared:
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      case nir_intrinsic_shader_clock:
+         nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL);
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      case nir_intrinsic_store_ssbo: {
+         exec_node *param = ir->actual_parameters.get_head();
+         ir_rvalue *block = ((ir_instruction *)param)->as_rvalue();
+
+         param = param->get_next();
+         ir_rvalue *offset = ((ir_instruction *)param)->as_rvalue();
+
+         param = param->get_next();
+         ir_rvalue *val = ((ir_instruction *)param)->as_rvalue();
+
+         param = param->get_next();
+         ir_constant *write_mask = ((ir_instruction *)param)->as_constant();
+         assert(write_mask);
+
+         /* Check if we need the indirect version */
+         ir_constant *const_offset = offset->as_constant();
+         if (!const_offset) {
+            op = nir_intrinsic_store_ssbo_indirect;
+            ralloc_free(instr);
+            instr = nir_intrinsic_instr_create(shader, op);
+            instr->src[2] = nir_src_for_ssa(evaluate_rvalue(offset));
+            instr->const_index[0] = 0;
+         } else {
+            instr->const_index[0] = const_offset->value.u[0];
+         }
+
+         instr->const_index[1] = write_mask->value.u[0];
+
+         instr->src[0] = nir_src_for_ssa(evaluate_rvalue(val));
+         instr->num_components = val->type->vector_elements;
+
+         instr->src[1] = nir_src_for_ssa(evaluate_rvalue(block));
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      }
+      case nir_intrinsic_load_ssbo: {
+         exec_node *param = ir->actual_parameters.get_head();
+         ir_rvalue *block = ((ir_instruction *)param)->as_rvalue();
+
+         param = param->get_next();
+         ir_rvalue *offset = ((ir_instruction *)param)->as_rvalue();
+
+         /* Check if we need the indirect version */
+         ir_constant *const_offset = offset->as_constant();
+         if (!const_offset) {
+            op = nir_intrinsic_load_ssbo_indirect;
+            ralloc_free(instr);
+            instr = nir_intrinsic_instr_create(shader, op);
+            instr->src[1] = nir_src_for_ssa(evaluate_rvalue(offset));
+            instr->const_index[0] = 0;
+            dest = &instr->dest;
+         } else {
+            instr->const_index[0] = const_offset->value.u[0];
+         }
+
+         instr->src[0] = nir_src_for_ssa(evaluate_rvalue(block));
+
+         const glsl_type *type = ir->return_deref->var->type;
+         instr->num_components = type->vector_elements;
+
+         /* Setup destination register */
+         nir_ssa_dest_init(&instr->instr, &instr->dest,
+                           type->vector_elements, NULL);
+
+         /* Insert the created nir instruction now since in the case of boolean
+          * result we will need to emit another instruction after it
+          */
+         nir_builder_instr_insert(&b, &instr->instr);
+
+         /*
+          * In SSBO/UBO's, a true boolean value is any non-zero value, but we
+          * consider a true boolean to be ~0. Fix this up with a != 0
+          * comparison.
+          */
+         if (type->base_type == GLSL_TYPE_BOOL) {
+            nir_alu_instr *load_ssbo_compare =
+               nir_alu_instr_create(shader, nir_op_ine);
+            load_ssbo_compare->src[0].src.is_ssa = true;
+            load_ssbo_compare->src[0].src.ssa = &instr->dest.ssa;
+            load_ssbo_compare->src[1].src =
+               nir_src_for_ssa(nir_imm_int(&b, 0));
+            for (unsigned i = 0; i < type->vector_elements; i++)
+               load_ssbo_compare->src[1].swizzle[i] = 0;
+            nir_ssa_dest_init(&load_ssbo_compare->instr,
+                              &load_ssbo_compare->dest.dest,
+                              type->vector_elements, NULL);
+            load_ssbo_compare->dest.write_mask = (1 << type->vector_elements) - 1;
+            nir_builder_instr_insert(&b, &load_ssbo_compare->instr);
+            dest = &load_ssbo_compare->dest.dest;
+         }
+         break;
+      }
+      case nir_intrinsic_ssbo_atomic_add:
+      case nir_intrinsic_ssbo_atomic_imin:
+      case nir_intrinsic_ssbo_atomic_umin:
+      case nir_intrinsic_ssbo_atomic_imax:
+      case nir_intrinsic_ssbo_atomic_umax:
+      case nir_intrinsic_ssbo_atomic_and:
+      case nir_intrinsic_ssbo_atomic_or:
+      case nir_intrinsic_ssbo_atomic_xor:
+      case nir_intrinsic_ssbo_atomic_exchange:
+      case nir_intrinsic_ssbo_atomic_comp_swap: {
+         int param_count = ir->actual_parameters.length();
+         assert(param_count == 3 || param_count == 4);
+
+         /* Block index */
+         exec_node *param = ir->actual_parameters.get_head();
+         ir_instruction *inst = (ir_instruction *) param;
+         instr->src[0] = nir_src_for_ssa(evaluate_rvalue(inst->as_rvalue()));
+
+         /* Offset */
+         param = param->get_next();
+         inst = (ir_instruction *) param;
+         instr->src[1] = nir_src_for_ssa(evaluate_rvalue(inst->as_rvalue()));
+
+         /* data1 parameter (this is always present) */
+         param = param->get_next();
+         inst = (ir_instruction *) param;
+         instr->src[2] = nir_src_for_ssa(evaluate_rvalue(inst->as_rvalue()));
+
+         /* data2 parameter (only with atomic_comp_swap) */
+         if (param_count == 4) {
+            assert(op == nir_intrinsic_ssbo_atomic_comp_swap);
+            param = param->get_next();
+            inst = (ir_instruction *) param;
+            instr->src[3] = nir_src_for_ssa(evaluate_rvalue(inst->as_rvalue()));
+         }
+
+         /* Atomic result */
+         assert(ir->return_deref);
+         nir_ssa_dest_init(&instr->instr, &instr->dest,
+                           ir->return_deref->type->vector_elements, NULL);
+         nir_builder_instr_insert(&b, &instr->instr);
+         break;
+      }
+      default:
+         unreachable("not reached");
+      }
+
+      if (ir->return_deref) {
+         nir_intrinsic_instr *store_instr =
+            nir_intrinsic_instr_create(shader, nir_intrinsic_store_var);
+         store_instr->num_components = ir->return_deref->type->vector_elements;
+
+         store_instr->variables[0] =
+            evaluate_deref(&store_instr->instr, ir->return_deref);
+         store_instr->src[0] = nir_src_for_ssa(&dest->ssa);
+
+         nir_builder_instr_insert(&b, &store_instr->instr);
+      }
 
       return;
    }
@@ -642,14 +1002,12 @@ nir_visitor::visit(ir_call *ir)
 
    unsigned i = 0;
    foreach_in_list(ir_dereference, param, &ir->actual_parameters) {
-      param->accept(this);
-      instr->params[i] = this->deref_head;
+      instr->params[i] = evaluate_deref(&instr->instr, param);
       i++;
    }
 
-   ir->return_deref->accept(this);
-   instr->return_deref = this->deref_head;
-   nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr);
+   instr->return_deref = evaluate_deref(&instr->instr, ir->return_deref);
+   nir_builder_instr_insert(&b, &instr->instr);
 }
 
 void
@@ -663,20 +1021,17 @@ nir_visitor::visit(ir_assignment *ir)
       nir_intrinsic_instr *copy =
          nir_intrinsic_instr_create(this->shader, nir_intrinsic_copy_var);
 
-      ir->lhs->accept(this);
-      copy->variables[0] = this->deref_head;
-
-      ir->rhs->accept(this);
-      copy->variables[1] = this->deref_head;
-
+      copy->variables[0] = evaluate_deref(&copy->instr, ir->lhs);
+      copy->variables[1] = evaluate_deref(&copy->instr, ir->rhs);
 
       if (ir->condition) {
          nir_if *if_stmt = nir_if_create(this->shader);
-         if_stmt->condition = evaluate_rvalue(ir->condition);
-         nir_cf_node_insert_end(this->cf_node_list, &if_stmt->cf_node);
+         if_stmt->condition = nir_src_for_ssa(evaluate_rvalue(ir->condition));
+         nir_builder_cf_insert(&b, &if_stmt->cf_node);
          nir_instr_insert_after_cf_list(&if_stmt->then_list, &copy->instr);
+         b.cursor = nir_after_cf_node(&if_stmt->cf_node);
       } else {
-         nir_instr_insert_after_cf_list(this->cf_node_list, &copy->instr);
+         nir_builder_instr_insert(&b, &copy->instr);
       }
       return;
    }
@@ -685,7 +1040,7 @@ nir_visitor::visit(ir_assignment *ir)
 
    ir->lhs->accept(this);
    nir_deref_var *lhs_deref = this->deref_head;
-   nir_src src = evaluate_rvalue(ir->rhs);
+   nir_ssa_def *src = evaluate_rvalue(ir->rhs);
 
    if (ir->write_mask != (1 << num_components) - 1 && ir->write_mask != 0) {
       /*
@@ -700,58 +1055,43 @@ nir_visitor::visit(ir_assignment *ir)
       load->num_components = ir->lhs->type->vector_elements;
       nir_ssa_dest_init(&load->instr, &load->dest, num_components, NULL);
       load->variables[0] = lhs_deref;
-      nir_instr_insert_after_cf_list(this->cf_node_list, &load->instr);
-
-      nir_op vec_op;
-      switch (ir->lhs->type->vector_elements) {
-         case 1: vec_op = nir_op_imov; break;
-         case 2: vec_op = nir_op_vec2; break;
-         case 3: vec_op = nir_op_vec3; break;
-         case 4: vec_op = nir_op_vec4; break;
-         default: unreachable("Invalid number of components"); break;
-      }
-      nir_alu_instr *vec = nir_alu_instr_create(this->shader, vec_op);
-      nir_ssa_dest_init(&vec->instr, &vec->dest.dest, num_components, NULL);
-      vec->dest.write_mask = (1 << num_components) - 1;
+      ralloc_steal(load, load->variables[0]);
+      nir_builder_instr_insert(&b, &load->instr);
+
+      nir_ssa_def *srcs[4];
 
       unsigned component = 0;
       for (unsigned i = 0; i < ir->lhs->type->vector_elements; i++) {
          if (ir->write_mask & (1 << i)) {
-            vec->src[i].src = src;
-
             /* GLSL IR will give us the input to the write-masked assignment
              * in a single packed vector.  So, for example, if the
              * writemask is xzw, then we have to swizzle x -> x, y -> z,
              * and z -> w and get the y component from the load.
              */
-            vec->src[i].swizzle[0] = component++;
+            srcs[i] = nir_channel(&b, src, component++);
          } else {
-            vec->src[i].src.is_ssa = true;
-            vec->src[i].src.ssa = &load->dest.ssa;
-            vec->src[i].swizzle[0] = i;
+            srcs[i] = nir_channel(&b, &load->dest.ssa, i);
          }
       }
 
-      nir_instr_insert_after_cf_list(this->cf_node_list, &vec->instr);
-
-      src.is_ssa = true;
-      src.ssa = &vec->dest.dest.ssa;
+      src = nir_vec(&b, srcs, ir->lhs->type->vector_elements);
    }
 
    nir_intrinsic_instr *store =
       nir_intrinsic_instr_create(this->shader, nir_intrinsic_store_var);
    store->num_components = ir->lhs->type->vector_elements;
-   nir_deref *store_deref = nir_copy_deref(this->shader, &lhs_deref->deref);
+   nir_deref *store_deref = nir_copy_deref(store, &lhs_deref->deref);
    store->variables[0] = nir_deref_as_var(store_deref);
-   store->src[0] = src;
+   store->src[0] = nir_src_for_ssa(src);
 
    if (ir->condition) {
       nir_if *if_stmt = nir_if_create(this->shader);
-      if_stmt->condition = evaluate_rvalue(ir->condition);
-      nir_cf_node_insert_end(this->cf_node_list, &if_stmt->cf_node);
+      if_stmt->condition = nir_src_for_ssa(evaluate_rvalue(ir->condition));
+      nir_builder_cf_insert(&b, &if_stmt->cf_node);
       nir_instr_insert_after_cf_list(&if_stmt->then_list, &store->instr);
+      b.cursor = nir_after_cf_node(&if_stmt->cf_node);
    } else {
-      nir_instr_insert_after_cf_list(this->cf_node_list, &store->instr);
+      nir_builder_instr_insert(&b, &store->instr);
    }
 }
 
@@ -796,13 +1136,18 @@ nir_visitor::add_instr(nir_instr *instr, unsigned num_components)
 {
    nir_dest *dest = get_instr_dest(instr);
 
-   nir_ssa_dest_init(instr, dest, num_components, NULL);
+   if (dest)
+      nir_ssa_dest_init(instr, dest, num_components, NULL);
+
+   nir_builder_instr_insert(&b, instr);
 
-   nir_instr_insert_after_cf_list(this->cf_node_list, instr);
-   this->result = instr;
+   if (dest) {
+      assert(dest->is_ssa);
+      this->result = &dest->ssa;
+   }
 }
 
-nir_src
+nir_ssa_def *
 nir_visitor::evaluate_rvalue(ir_rvalue* ir)
 {
    ir->accept(this);
@@ -816,53 +1161,11 @@ nir_visitor::evaluate_rvalue(ir_rvalue* ir)
          nir_intrinsic_instr_create(this->shader, nir_intrinsic_load_var);
       load_instr->num_components = ir->type->vector_elements;
       load_instr->variables[0] = this->deref_head;
+      ralloc_steal(load_instr, load_instr->variables[0]);
       add_instr(&load_instr->instr, ir->type->vector_elements);
    }
 
-   nir_dest *dest = get_instr_dest(this->result);
-
-   assert(dest->is_ssa);
-   nir_src src;
-   src.is_ssa = true;
-   src.ssa = &dest->ssa;
-
-   return src;
-}
-
-nir_alu_instr *
-nir_visitor::emit(nir_op op, unsigned dest_size, nir_src *srcs)
-{
-   nir_alu_instr *instr = nir_alu_instr_create(this->shader, op);
-   for (unsigned i = 0; i < nir_op_infos[op].num_inputs; i++)
-      instr->src[i].src = srcs[i];
-   instr->dest.write_mask = (1 << dest_size) - 1;
-   add_instr(&instr->instr, dest_size);
-   return instr;
-}
-
-nir_alu_instr *
-nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1)
-{
-   assert(nir_op_infos[op].num_inputs == 1);
-   return emit(op, dest_size, &src1);
-}
-
-nir_alu_instr *
-nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1,
-                  nir_src src2)
-{
-   assert(nir_op_infos[op].num_inputs == 2);
-   nir_src srcs[] = { src1, src2 };
-   return emit(op, dest_size, srcs);
-}
-
-nir_alu_instr *
-nir_visitor::emit(nir_op op, unsigned dest_size, nir_src src1,
-                  nir_src src2, nir_src src3)
-{
-   assert(nir_op_infos[op].num_inputs == 3);
-   nir_src srcs[] = { src1, src2, src3 };
-   return emit(op, dest_size, srcs);
+   return this->result;
 }
 
 void
@@ -882,10 +1185,9 @@ nir_visitor::visit(ir_expression *ir)
       nir_intrinsic_instr *load = nir_intrinsic_instr_create(this->shader, op);
       load->num_components = ir->type->vector_elements;
       load->const_index[0] = const_index ? const_index->value.u[0] : 0; /* base offset */
-      load->const_index[1] = 1; /* number of vec4's */
-      load->src[0] = evaluate_rvalue(ir->operands[0]);
+      load->src[0] = nir_src_for_ssa(evaluate_rvalue(ir->operands[0]));
       if (!const_index)
-         load->src[1] = evaluate_rvalue(ir->operands[1]);
+         load->src[1] = nir_src_for_ssa(evaluate_rvalue(ir->operands[1]));
       add_instr(&load->instr, ir->type->vector_elements);
 
       /*
@@ -893,22 +1195,8 @@ nir_visitor::visit(ir_expression *ir)
        * a true boolean to be ~0. Fix this up with a != 0 comparison.
        */
 
-      if (ir->type->base_type == GLSL_TYPE_BOOL) {
-         nir_load_const_instr *const_zero = nir_load_const_instr_create(shader, 1);
-         const_zero->value.u[0] = 0;
-         nir_instr_insert_after_cf_list(this->cf_node_list, &const_zero->instr);
-
-         nir_alu_instr *compare = nir_alu_instr_create(shader, nir_op_ine);
-         compare->src[0].src.is_ssa = true;
-         compare->src[0].src.ssa = &load->dest.ssa;
-         compare->src[1].src.is_ssa = true;
-         compare->src[1].src.ssa = &const_zero->def;
-         for (unsigned i = 0; i < ir->type->vector_elements; i++)
-            compare->src[1].swizzle[i] = 0;
-         compare->dest.write_mask = (1 << ir->type->vector_elements) - 1;
-
-         add_instr(&compare->instr, ir->type->vector_elements);
-      }
+      if (ir->type->base_type == GLSL_TYPE_BOOL)
+         this->result = nir_ine(&b, &load->dest.ssa, nir_imm_int(&b, 0));
 
       return;
    }
@@ -959,27 +1247,21 @@ nir_visitor::visit(ir_expression *ir)
       nir_intrinsic_instr *intrin = nir_intrinsic_instr_create(shader, op);
       intrin->num_components = deref->type->vector_elements;
       intrin->variables[0] = this->deref_head;
+      ralloc_steal(intrin, intrin->variables[0]);
 
       if (intrin->intrinsic == nir_intrinsic_interp_var_at_offset ||
           intrin->intrinsic == nir_intrinsic_interp_var_at_sample)
-         intrin->src[0] = evaluate_rvalue(ir->operands[1]);
+         intrin->src[0] = nir_src_for_ssa(evaluate_rvalue(ir->operands[1]));
 
       add_instr(&intrin->instr, deref->type->vector_elements);
 
       if (swizzle) {
-         nir_alu_instr *mov = nir_alu_instr_create(shader, nir_op_imov);
-         mov->dest.write_mask = (1 << swizzle->type->vector_elements) - 1;
-         mov->src[0].src.is_ssa = true;
-         mov->src[0].src.ssa = &intrin->dest.ssa;
-
-         mov->src[0].swizzle[0] = swizzle->mask.x;
-         mov->src[0].swizzle[1] = swizzle->mask.y;
-         mov->src[0].swizzle[2] = swizzle->mask.z;
-         mov->src[0].swizzle[3] = swizzle->mask.w;
-         for (unsigned i = deref->type->vector_elements; i < 4; i++)
-            mov->src[0].swizzle[i] = 0;
-
-         add_instr(&mov->instr, swizzle->type->vector_elements);
+         unsigned swiz[4] = {
+            swizzle->mask.x, swizzle->mask.y, swizzle->mask.z, swizzle->mask.w
+         };
+
+         result = nir_swizzle(&b, result, swiz,
+                              swizzle->type->vector_elements, false);
       }
 
       return;
@@ -989,7 +1271,7 @@ nir_visitor::visit(ir_expression *ir)
       break;
    }
 
-   nir_src srcs[4];
+   nir_ssa_def *srcs[4];
    for (unsigned i = 0; i < ir->get_num_operands(); i++)
       srcs[i] = evaluate_rvalue(ir->operands[i]);
 
@@ -1006,192 +1288,182 @@ nir_visitor::visit(ir_expression *ir)
    else
       out_type = GLSL_TYPE_FLOAT;
 
-   unsigned dest_size = ir->type->vector_elements;
-
-   nir_alu_instr *instr;
-   nir_op op;
-
    switch (ir->operation) {
-   case ir_unop_bit_not: emit(nir_op_inot, dest_size, srcs); break;
+   case ir_unop_bit_not: result = nir_inot(&b, srcs[0]); break;
    case ir_unop_logic_not:
-      emit(supports_ints ? nir_op_inot : nir_op_fnot, dest_size, srcs);
+      result = supports_ints ? nir_inot(&b, srcs[0]) : nir_fnot(&b, srcs[0]);
       break;
    case ir_unop_neg:
-      instr = emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fneg : nir_op_ineg,
-                   dest_size, srcs);
+      result = (types[0] == GLSL_TYPE_FLOAT) ? nir_fneg(&b, srcs[0])
+                                             : nir_ineg(&b, srcs[0]);
       break;
    case ir_unop_abs:
-      instr = emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fabs : nir_op_iabs,
-                   dest_size, srcs);
+      result = (types[0] == GLSL_TYPE_FLOAT) ? nir_fabs(&b, srcs[0])
+                                             : nir_iabs(&b, srcs[0]);
       break;
    case ir_unop_saturate:
       assert(types[0] == GLSL_TYPE_FLOAT);
-      instr = emit(nir_op_fsat, dest_size, srcs);
+      result = nir_fsat(&b, srcs[0]);
       break;
    case ir_unop_sign:
-      emit(types[0] == GLSL_TYPE_FLOAT ? nir_op_fsign : nir_op_isign,
-           dest_size, srcs);
-      break;
-   case ir_unop_rcp:  emit(nir_op_frcp, dest_size, srcs);  break;
-   case ir_unop_rsq:  emit(nir_op_frsq, dest_size, srcs);  break;
-   case ir_unop_sqrt: emit(nir_op_fsqrt, dest_size, srcs); break;
-   case ir_unop_exp:  emit(nir_op_fexp, dest_size, srcs);  break;
-   case ir_unop_log:  emit(nir_op_flog, dest_size, srcs);  break;
-   case ir_unop_exp2: emit(nir_op_fexp2, dest_size, srcs); break;
-   case ir_unop_log2: emit(nir_op_flog2, dest_size, srcs); break;
+      result = (types[0] == GLSL_TYPE_FLOAT) ? nir_fsign(&b, srcs[0])
+                                             : nir_isign(&b, srcs[0]);
+      break;
+   case ir_unop_rcp:  result = nir_frcp(&b, srcs[0]);  break;
+   case ir_unop_rsq:  result = nir_frsq(&b, srcs[0]);  break;
+   case ir_unop_sqrt: result = nir_fsqrt(&b, srcs[0]); break;
+   case ir_unop_exp:  unreachable("ir_unop_exp should have been lowered");
+   case ir_unop_log:  unreachable("ir_unop_log should have been lowered");
+   case ir_unop_exp2: result = nir_fexp2(&b, srcs[0]); break;
+   case ir_unop_log2: result = nir_flog2(&b, srcs[0]); break;
    case ir_unop_i2f:
-      emit(supports_ints ? nir_op_i2f : nir_op_fmov, dest_size, srcs);
+      result = supports_ints ? nir_i2f(&b, srcs[0]) : nir_fmov(&b, srcs[0]);
       break;
    case ir_unop_u2f:
-      emit(supports_ints ? nir_op_u2f : nir_op_fmov, dest_size, srcs);
+      result = supports_ints ? nir_u2f(&b, srcs[0]) : nir_fmov(&b, srcs[0]);
       break;
    case ir_unop_b2f:
-      emit(supports_ints ? nir_op_b2f : nir_op_fmov, dest_size, srcs);
+      result = supports_ints ? nir_b2f(&b, srcs[0]) : nir_fmov(&b, srcs[0]);
       break;
-   case ir_unop_f2i:  emit(nir_op_f2i, dest_size, srcs);   break;
-   case ir_unop_f2u:  emit(nir_op_f2u, dest_size, srcs);   break;
-   case ir_unop_f2b:  emit(nir_op_f2b, dest_size, srcs);   break;
-   case ir_unop_i2b:  emit(nir_op_i2b, dest_size, srcs);   break;
-   case ir_unop_b2i:  emit(nir_op_b2i, dest_size, srcs);   break;
+   case ir_unop_f2i:  result = nir_f2i(&b, srcs[0]);   break;
+   case ir_unop_f2u:  result = nir_f2u(&b, srcs[0]);   break;
+   case ir_unop_f2b:  result = nir_f2b(&b, srcs[0]);   break;
+   case ir_unop_i2b:  result = nir_i2b(&b, srcs[0]);   break;
+   case ir_unop_b2i:  result = nir_b2i(&b, srcs[0]);   break;
    case ir_unop_i2u:
    case ir_unop_u2i:
    case ir_unop_bitcast_i2f:
    case ir_unop_bitcast_f2i:
    case ir_unop_bitcast_u2f:
    case ir_unop_bitcast_f2u:
+   case ir_unop_subroutine_to_int:
       /* no-op */
-      emit(nir_op_imov, dest_size, srcs);
+      result = nir_imov(&b, srcs[0]);
       break;
    case ir_unop_any:
       switch (ir->operands[0]->type->vector_elements) {
       case 2:
-         emit(supports_ints ? nir_op_bany2 : nir_op_fany2,
-              dest_size, srcs);
+         result = supports_ints ? nir_bany2(&b, srcs[0])
+                                : nir_fany2(&b, srcs[0]);
          break;
       case 3:
-         emit(supports_ints ? nir_op_bany3 : nir_op_fany3,
-              dest_size, srcs);
+         result = supports_ints ? nir_bany3(&b, srcs[0])
+                                : nir_fany3(&b, srcs[0]);
          break;
       case 4:
-         emit(supports_ints ? nir_op_bany4 : nir_op_fany4,
-              dest_size, srcs);
+         result = supports_ints ? nir_bany4(&b, srcs[0])
+                                : nir_fany4(&b, srcs[0]);
          break;
       default:
          unreachable("not reached");
       }
       break;
-   case ir_unop_trunc: emit(nir_op_ftrunc, dest_size, srcs); break;
-   case ir_unop_ceil:  emit(nir_op_fceil,  dest_size, srcs); break;
-   case ir_unop_floor: emit(nir_op_ffloor, dest_size, srcs); break;
-   case ir_unop_fract: emit(nir_op_ffract, dest_size, srcs); break;
-   case ir_unop_round_even: emit(nir_op_fround_even, dest_size, srcs); break;
-   case ir_unop_sin:   emit(nir_op_fsin,   dest_size, srcs); break;
-   case ir_unop_cos:   emit(nir_op_fcos,   dest_size, srcs); break;
-   case ir_unop_sin_reduced:
-      emit(nir_op_fsin_reduced, dest_size, srcs);
-      break;
-   case ir_unop_cos_reduced:
-      emit(nir_op_fcos_reduced, dest_size, srcs);
-      break;
-   case ir_unop_dFdx:        emit(nir_op_fddx,        dest_size, srcs); break;
-   case ir_unop_dFdy:        emit(nir_op_fddy,        dest_size, srcs); break;
-   case ir_unop_dFdx_fine:   emit(nir_op_fddx_fine,   dest_size, srcs); break;
-   case ir_unop_dFdy_fine:   emit(nir_op_fddy_fine,   dest_size, srcs); break;
-   case ir_unop_dFdx_coarse: emit(nir_op_fddx_coarse, dest_size, srcs); break;
-   case ir_unop_dFdy_coarse: emit(nir_op_fddy_coarse, dest_size, srcs); break;
+   case ir_unop_trunc: result = nir_ftrunc(&b, srcs[0]); break;
+   case ir_unop_ceil:  result = nir_fceil(&b, srcs[0]); break;
+   case ir_unop_floor: result = nir_ffloor(&b, srcs[0]); break;
+   case ir_unop_fract: result = nir_ffract(&b, srcs[0]); break;
+   case ir_unop_round_even: result = nir_fround_even(&b, srcs[0]); break;
+   case ir_unop_sin:   result = nir_fsin(&b, srcs[0]); break;
+   case ir_unop_cos:   result = nir_fcos(&b, srcs[0]); break;
+   case ir_unop_dFdx:        result = nir_fddx(&b, srcs[0]); break;
+   case ir_unop_dFdy:        result = nir_fddy(&b, srcs[0]); break;
+   case ir_unop_dFdx_fine:   result = nir_fddx_fine(&b, srcs[0]); break;
+   case ir_unop_dFdy_fine:   result = nir_fddy_fine(&b, srcs[0]); break;
+   case ir_unop_dFdx_coarse: result = nir_fddx_coarse(&b, srcs[0]); break;
+   case ir_unop_dFdy_coarse: result = nir_fddy_coarse(&b, srcs[0]); break;
    case ir_unop_pack_snorm_2x16:
-      emit(nir_op_pack_snorm_2x16, dest_size, srcs);
+      result = nir_pack_snorm_2x16(&b, srcs[0]);
       break;
    case ir_unop_pack_snorm_4x8:
-      emit(nir_op_pack_snorm_4x8, dest_size, srcs);
+      result = nir_pack_snorm_4x8(&b, srcs[0]);
       break;
    case ir_unop_pack_unorm_2x16:
-      emit(nir_op_pack_unorm_2x16, dest_size, srcs);
+      result = nir_pack_unorm_2x16(&b, srcs[0]);
       break;
    case ir_unop_pack_unorm_4x8:
-      emit(nir_op_pack_unorm_4x8, dest_size, srcs);
+      result = nir_pack_unorm_4x8(&b, srcs[0]);
       break;
    case ir_unop_pack_half_2x16:
-      emit(nir_op_pack_half_2x16, dest_size, srcs);
+      result = nir_pack_half_2x16(&b, srcs[0]);
       break;
    case ir_unop_unpack_snorm_2x16:
-      emit(nir_op_unpack_snorm_2x16, dest_size, srcs);
+      result = nir_unpack_snorm_2x16(&b, srcs[0]);
       break;
    case ir_unop_unpack_snorm_4x8:
-      emit(nir_op_unpack_snorm_4x8, dest_size, srcs);
+      result = nir_unpack_snorm_4x8(&b, srcs[0]);
       break;
    case ir_unop_unpack_unorm_2x16:
-      emit(nir_op_unpack_unorm_2x16, dest_size, srcs);
+      result = nir_unpack_unorm_2x16(&b, srcs[0]);
       break;
    case ir_unop_unpack_unorm_4x8:
-      emit(nir_op_unpack_unorm_4x8, dest_size, srcs);
+      result = nir_unpack_unorm_4x8(&b, srcs[0]);
       break;
    case ir_unop_unpack_half_2x16:
-      emit(nir_op_unpack_half_2x16, dest_size, srcs);
+      result = nir_unpack_half_2x16(&b, srcs[0]);
       break;
    case ir_unop_unpack_half_2x16_split_x:
-      emit(nir_op_unpack_half_2x16_split_x, dest_size, srcs);
+      result = nir_unpack_half_2x16_split_x(&b, srcs[0]);
       break;
    case ir_unop_unpack_half_2x16_split_y:
-      emit(nir_op_unpack_half_2x16_split_y, dest_size, srcs);
+      result = nir_unpack_half_2x16_split_y(&b, srcs[0]);
       break;
    case ir_unop_bitfield_reverse:
-      emit(nir_op_bitfield_reverse, dest_size, srcs);
+      result = nir_bitfield_reverse(&b, srcs[0]);
       break;
    case ir_unop_bit_count:
-      emit(nir_op_bit_count, dest_size, srcs);
+      result = nir_bit_count(&b, srcs[0]);
       break;
    case ir_unop_find_msb:
       switch (types[0]) {
       case GLSL_TYPE_UINT:
-         emit(nir_op_ufind_msb, dest_size, srcs);
+         result = nir_ufind_msb(&b, srcs[0]);
          break;
       case GLSL_TYPE_INT:
-         emit(nir_op_ifind_msb, dest_size, srcs);
+         result = nir_ifind_msb(&b, srcs[0]);
          break;
       default:
          unreachable("Invalid type for findMSB()");
       }
       break;
    case ir_unop_find_lsb:
-      emit(nir_op_find_lsb,  dest_size, srcs);
+      result = nir_find_lsb(&b, srcs[0]);
       break;
 
    case ir_unop_noise:
       switch (ir->type->vector_elements) {
       case 1:
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_fnoise1_1, dest_size, srcs); break;
-            case 2: emit(nir_op_fnoise1_2, dest_size, srcs); break;
-            case 3: emit(nir_op_fnoise1_3, dest_size, srcs); break;
-            case 4: emit(nir_op_fnoise1_4, dest_size, srcs); break;
+            case 1: result = nir_fnoise1_1(&b, srcs[0]); break;
+            case 2: result = nir_fnoise1_2(&b, srcs[0]); break;
+            case 3: result = nir_fnoise1_3(&b, srcs[0]); break;
+            case 4: result = nir_fnoise1_4(&b, srcs[0]); break;
             default: unreachable("not reached");
          }
          break;
       case 2:
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_fnoise2_1, dest_size, srcs); break;
-            case 2: emit(nir_op_fnoise2_2, dest_size, srcs); break;
-            case 3: emit(nir_op_fnoise2_3, dest_size, srcs); break;
-            case 4: emit(nir_op_fnoise2_4, dest_size, srcs); break;
+            case 1: result = nir_fnoise2_1(&b, srcs[0]); break;
+            case 2: result = nir_fnoise2_2(&b, srcs[0]); break;
+            case 3: result = nir_fnoise2_3(&b, srcs[0]); break;
+            case 4: result = nir_fnoise2_4(&b, srcs[0]); break;
             default: unreachable("not reached");
          }
          break;
       case 3:
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_fnoise3_1, dest_size, srcs); break;
-            case 2: emit(nir_op_fnoise3_2, dest_size, srcs); break;
-            case 3: emit(nir_op_fnoise3_3, dest_size, srcs); break;
-            case 4: emit(nir_op_fnoise3_4, dest_size, srcs); break;
+            case 1: result = nir_fnoise3_1(&b, srcs[0]); break;
+            case 2: result = nir_fnoise3_2(&b, srcs[0]); break;
+            case 3: result = nir_fnoise3_3(&b, srcs[0]); break;
+            case 4: result = nir_fnoise3_4(&b, srcs[0]); break;
             default: unreachable("not reached");
          }
          break;
       case 4:
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_fnoise4_1, dest_size, srcs); break;
-            case 2: emit(nir_op_fnoise4_2, dest_size, srcs); break;
-            case 3: emit(nir_op_fnoise4_3, dest_size, srcs); break;
-            case 4: emit(nir_op_fnoise4_4, dest_size, srcs); break;
+            case 1: result = nir_fnoise4_1(&b, srcs[0]); break;
+            case 2: result = nir_fnoise4_2(&b, srcs[0]); break;
+            case 3: result = nir_fnoise4_3(&b, srcs[0]); break;
+            case 4: result = nir_fnoise4_4(&b, srcs[0]); break;
             default: unreachable("not reached");
          }
          break;
@@ -1199,214 +1471,178 @@ nir_visitor::visit(ir_expression *ir)
          unreachable("not reached");
       }
       break;
+   case ir_unop_get_buffer_size: {
+      nir_intrinsic_instr *load = nir_intrinsic_instr_create(
+         this->shader,
+         nir_intrinsic_get_buffer_size);
+      load->num_components = ir->type->vector_elements;
+      load->src[0] = nir_src_for_ssa(evaluate_rvalue(ir->operands[0]));
+      add_instr(&load->instr, ir->type->vector_elements);
+      return;
+   }
+
    case ir_binop_add:
+      result = (out_type == GLSL_TYPE_FLOAT) ? nir_fadd(&b, srcs[0], srcs[1])
+                                             : nir_iadd(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_sub:
+      result = (out_type == GLSL_TYPE_FLOAT) ? nir_fsub(&b, srcs[0], srcs[1])
+                                             : nir_isub(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_mul:
+      result = (out_type == GLSL_TYPE_FLOAT) ? nir_fmul(&b, srcs[0], srcs[1])
+                                             : nir_imul(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_div:
+      if (out_type == GLSL_TYPE_FLOAT)
+         result = nir_fdiv(&b, srcs[0], srcs[1]);
+      else if (out_type == GLSL_TYPE_INT)
+         result = nir_idiv(&b, srcs[0], srcs[1]);
+      else
+         result = nir_udiv(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_mod:
+      result = (out_type == GLSL_TYPE_FLOAT) ? nir_fmod(&b, srcs[0], srcs[1])
+                                             : nir_umod(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_min:
+      if (out_type == GLSL_TYPE_FLOAT)
+         result = nir_fmin(&b, srcs[0], srcs[1]);
+      else if (out_type == GLSL_TYPE_INT)
+         result = nir_imin(&b, srcs[0], srcs[1]);
+      else
+         result = nir_umin(&b, srcs[0], srcs[1]);
+      break;
    case ir_binop_max:
-   case ir_binop_pow:
-   case ir_binop_bit_and:
-   case ir_binop_bit_or:
-   case ir_binop_bit_xor:
-   case ir_binop_lshift:
+      if (out_type == GLSL_TYPE_FLOAT)
+         result = nir_fmax(&b, srcs[0], srcs[1]);
+      else if (out_type == GLSL_TYPE_INT)
+         result = nir_imax(&b, srcs[0], srcs[1]);
+      else
+         result = nir_umax(&b, srcs[0], srcs[1]);
+      break;
+   case ir_binop_pow: result = nir_fpow(&b, srcs[0], srcs[1]); break;
+   case ir_binop_bit_and: result = nir_iand(&b, srcs[0], srcs[1]); break;
+   case ir_binop_bit_or: result = nir_ior(&b, srcs[0], srcs[1]); break;
+   case ir_binop_bit_xor: result = nir_ixor(&b, srcs[0], srcs[1]); break;
+   case ir_binop_logic_and:
+      result = supports_ints ? nir_iand(&b, srcs[0], srcs[1])
+                             : nir_fand(&b, srcs[0], srcs[1]);
+      break;
+   case ir_binop_logic_or:
+      result = supports_ints ? nir_ior(&b, srcs[0], srcs[1])
+                             : nir_for(&b, srcs[0], srcs[1]);
+      break;
+   case ir_binop_logic_xor:
+      result = supports_ints ? nir_ixor(&b, srcs[0], srcs[1])
+                             : nir_fxor(&b, srcs[0], srcs[1]);
+      break;
+   case ir_binop_lshift: result = nir_ishl(&b, srcs[0], srcs[1]); break;
    case ir_binop_rshift:
-      switch (ir->operation) {
-      case ir_binop_add:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fadd;
-         else
-            op = nir_op_iadd;
-         break;
-      case ir_binop_sub:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fsub;
-         else
-            op = nir_op_isub;
-         break;
-      case ir_binop_mul:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fmul;
-         else
-            op = nir_op_imul;
-         break;
-      case ir_binop_div:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fdiv;
-         else if (out_type == GLSL_TYPE_INT)
-            op = nir_op_idiv;
-         else
-            op = nir_op_udiv;
-         break;
-      case ir_binop_mod:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fmod;
-         else
-            op = nir_op_umod;
-         break;
-      case ir_binop_min:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fmin;
-         else if (out_type == GLSL_TYPE_INT)
-            op = nir_op_imin;
-         else
-            op = nir_op_umin;
-         break;
-      case ir_binop_max:
-         if (out_type == GLSL_TYPE_FLOAT)
-            op = nir_op_fmax;
-         else if (out_type == GLSL_TYPE_INT)
-            op = nir_op_imax;
-         else
-            op = nir_op_umax;
-         break;
-      case ir_binop_bit_and:
-         op = nir_op_iand;
-         break;
-      case ir_binop_bit_or:
-         op = nir_op_ior;
-         break;
-      case ir_binop_bit_xor:
-         op = nir_op_ixor;
-         break;
-      case ir_binop_lshift:
-         op = nir_op_ishl;
-         break;
-      case ir_binop_rshift:
-         if (out_type == GLSL_TYPE_INT)
-            op = nir_op_ishr;
-         else
-            op = nir_op_ushr;
-         break;
-      case ir_binop_pow:
-         op = nir_op_fpow;
-         break;
-
-      default:
-         unreachable("not reached");
-      }
-
-      instr = emit(op, dest_size, srcs);
-
-      if (ir->operands[0]->type->vector_elements != 1 &&
-          ir->operands[1]->type->vector_elements == 1) {
-         for (unsigned i = 0; i < ir->operands[0]->type->vector_elements;
-              i++) {
-            instr->src[1].swizzle[i] = 0;
-         }
-      }
-
-      if (ir->operands[1]->type->vector_elements != 1 &&
-          ir->operands[0]->type->vector_elements == 1) {
-         for (unsigned i = 0; i < ir->operands[1]->type->vector_elements;
-              i++) {
-            instr->src[0].swizzle[i] = 0;
-         }
-      }
-
+      result = (out_type == GLSL_TYPE_INT) ? nir_ishr(&b, srcs[0], srcs[1])
+                                           : nir_ushr(&b, srcs[0], srcs[1]);
       break;
    case ir_binop_imul_high:
-      emit(out_type == GLSL_TYPE_UINT ? nir_op_umul_high : nir_op_imul_high,
-           dest_size, srcs);
+      result = (out_type == GLSL_TYPE_INT) ? nir_imul_high(&b, srcs[0], srcs[1])
+                                           : nir_umul_high(&b, srcs[0], srcs[1]);
       break;
-   case ir_binop_carry:  emit(nir_op_uadd_carry, dest_size, srcs);  break;
-   case ir_binop_borrow: emit(nir_op_usub_borrow, dest_size, srcs); break;
+   case ir_binop_carry:  result = nir_uadd_carry(&b, srcs[0], srcs[1]);  break;
+   case ir_binop_borrow: result = nir_usub_borrow(&b, srcs[0], srcs[1]); break;
    case ir_binop_less:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_flt, dest_size, srcs);
+            result = nir_flt(&b, srcs[0], srcs[1]);
          else if (types[0] == GLSL_TYPE_INT)
-            emit(nir_op_ilt, dest_size, srcs);
+            result = nir_ilt(&b, srcs[0], srcs[1]);
          else
-            emit(nir_op_ult, dest_size, srcs);
+            result = nir_ult(&b, srcs[0], srcs[1]);
       } else {
-         emit(nir_op_slt, dest_size, srcs);
+         result = nir_slt(&b, srcs[0], srcs[1]);
       }
       break;
    case ir_binop_greater:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_flt, dest_size, srcs[1], srcs[0]);
+            result = nir_flt(&b, srcs[1], srcs[0]);
          else if (types[0] == GLSL_TYPE_INT)
-            emit(nir_op_ilt, dest_size, srcs[1], srcs[0]);
+            result = nir_ilt(&b, srcs[1], srcs[0]);
          else
-            emit(nir_op_ult, dest_size, srcs[1], srcs[0]);
+            result = nir_ult(&b, srcs[1], srcs[0]);
       } else {
-         emit(nir_op_slt, dest_size, srcs[1], srcs[0]);
+         result = nir_slt(&b, srcs[1], srcs[0]);
       }
       break;
    case ir_binop_lequal:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_fge, dest_size, srcs[1], srcs[0]);
+            result = nir_fge(&b, srcs[1], srcs[0]);
          else if (types[0] == GLSL_TYPE_INT)
-            emit(nir_op_ige, dest_size, srcs[1], srcs[0]);
+            result = nir_ige(&b, srcs[1], srcs[0]);
          else
-            emit(nir_op_uge, dest_size, srcs[1], srcs[0]);
+            result = nir_uge(&b, srcs[1], srcs[0]);
       } else {
-         emit(nir_op_slt, dest_size, srcs[1], srcs[0]);
+         result = nir_slt(&b, srcs[1], srcs[0]);
       }
       break;
    case ir_binop_gequal:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_fge, dest_size, srcs);
+            result = nir_fge(&b, srcs[0], srcs[1]);
          else if (types[0] == GLSL_TYPE_INT)
-            emit(nir_op_ige, dest_size, srcs);
+            result = nir_ige(&b, srcs[0], srcs[1]);
          else
-            emit(nir_op_uge, dest_size, srcs);
+            result = nir_uge(&b, srcs[0], srcs[1]);
       } else {
-         emit(nir_op_slt, dest_size, srcs);
+         result = nir_slt(&b, srcs[0], srcs[1]);
       }
       break;
    case ir_binop_equal:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_feq, dest_size, srcs);
+            result = nir_feq(&b, srcs[0], srcs[1]);
          else
-            emit(nir_op_ieq, dest_size, srcs);
+            result = nir_ieq(&b, srcs[0], srcs[1]);
       } else {
-         emit(nir_op_seq, dest_size, srcs);
+         result = nir_seq(&b, srcs[0], srcs[1]);
       }
       break;
    case ir_binop_nequal:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT)
-            emit(nir_op_fne, dest_size, srcs);
+            result = nir_fne(&b, srcs[0], srcs[1]);
          else
-            emit(nir_op_ine, dest_size, srcs);
+            result = nir_ine(&b, srcs[0], srcs[1]);
       } else {
-         emit(nir_op_sne, dest_size, srcs);
+         result = nir_sne(&b, srcs[0], srcs[1]);
       }
       break;
    case ir_binop_all_equal:
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT) {
             switch (ir->operands[0]->type->vector_elements) {
-               case 1: emit(nir_op_feq, dest_size, srcs); break;
-               case 2: emit(nir_op_ball_fequal2, dest_size, srcs); break;
-               case 3: emit(nir_op_ball_fequal3, dest_size, srcs); break;
-               case 4: emit(nir_op_ball_fequal4, dest_size, srcs); break;
+               case 1: result = nir_feq(&b, srcs[0], srcs[1]); break;
+               case 2: result = nir_ball_fequal2(&b, srcs[0], srcs[1]); break;
+               case 3: result = nir_ball_fequal3(&b, srcs[0], srcs[1]); break;
+               case 4: result = nir_ball_fequal4(&b, srcs[0], srcs[1]); break;
                default:
                   unreachable("not reached");
             }
          } else {
             switch (ir->operands[0]->type->vector_elements) {
-               case 1: emit(nir_op_ieq, dest_size, srcs); break;
-               case 2: emit(nir_op_ball_iequal2, dest_size, srcs); break;
-               case 3: emit(nir_op_ball_iequal3, dest_size, srcs); break;
-               case 4: emit(nir_op_ball_iequal4, dest_size, srcs); break;
+               case 1: result = nir_ieq(&b, srcs[0], srcs[1]); break;
+               case 2: result = nir_ball_iequal2(&b, srcs[0], srcs[1]); break;
+               case 3: result = nir_ball_iequal3(&b, srcs[0], srcs[1]); break;
+               case 4: result = nir_ball_iequal4(&b, srcs[0], srcs[1]); break;
                default:
                   unreachable("not reached");
             }
          }
       } else {
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_seq, dest_size, srcs); break;
-            case 2: emit(nir_op_fall_equal2, dest_size, srcs); break;
-            case 3: emit(nir_op_fall_equal3, dest_size, srcs); break;
-            case 4: emit(nir_op_fall_equal4, dest_size, srcs); break;
+            case 1: result = nir_seq(&b, srcs[0], srcs[1]); break;
+            case 2: result = nir_fall_equal2(&b, srcs[0], srcs[1]); break;
+            case 3: result = nir_fall_equal3(&b, srcs[0], srcs[1]); break;
+            case 4: result = nir_fall_equal4(&b, srcs[0], srcs[1]); break;
             default:
                unreachable("not reached");
          }
@@ -1416,112 +1652,74 @@ nir_visitor::visit(ir_expression *ir)
       if (supports_ints) {
          if (types[0] == GLSL_TYPE_FLOAT) {
             switch (ir->operands[0]->type->vector_elements) {
-               case 1: emit(nir_op_fne, dest_size, srcs); break;
-               case 2: emit(nir_op_bany_fnequal2, dest_size, srcs); break;
-               case 3: emit(nir_op_bany_fnequal3, dest_size, srcs); break;
-               case 4: emit(nir_op_bany_fnequal4, dest_size, srcs); break;
+               case 1: result = nir_fne(&b, srcs[0], srcs[1]); break;
+               case 2: result = nir_bany_fnequal2(&b, srcs[0], srcs[1]); break;
+               case 3: result = nir_bany_fnequal3(&b, srcs[0], srcs[1]); break;
+               case 4: result = nir_bany_fnequal4(&b, srcs[0], srcs[1]); break;
                default:
                   unreachable("not reached");
             }
          } else {
             switch (ir->operands[0]->type->vector_elements) {
-               case 1: emit(nir_op_ine, dest_size, srcs); break;
-               case 2: emit(nir_op_bany_inequal2, dest_size, srcs); break;
-               case 3: emit(nir_op_bany_inequal3, dest_size, srcs); break;
-               case 4: emit(nir_op_bany_inequal4, dest_size, srcs); break;
+               case 1: result = nir_ine(&b, srcs[0], srcs[1]); break;
+               case 2: result = nir_bany_inequal2(&b, srcs[0], srcs[1]); break;
+               case 3: result = nir_bany_inequal3(&b, srcs[0], srcs[1]); break;
+               case 4: result = nir_bany_inequal4(&b, srcs[0], srcs[1]); break;
                default:
                   unreachable("not reached");
             }
          }
       } else {
          switch (ir->operands[0]->type->vector_elements) {
-            case 1: emit(nir_op_sne, dest_size, srcs); break;
-            case 2: emit(nir_op_fany_nequal2, dest_size, srcs); break;
-            case 3: emit(nir_op_fany_nequal3, dest_size, srcs); break;
-            case 4: emit(nir_op_fany_nequal4, dest_size, srcs); break;
+            case 1: result = nir_sne(&b, srcs[0], srcs[1]); break;
+            case 2: result = nir_fany_nequal2(&b, srcs[0], srcs[1]); break;
+            case 3: result = nir_fany_nequal3(&b, srcs[0], srcs[1]); break;
+            case 4: result = nir_fany_nequal4(&b, srcs[0], srcs[1]); break;
             default:
                unreachable("not reached");
          }
       }
       break;
-   case ir_binop_logic_and:
-      if (supports_ints)
-         emit(nir_op_iand, dest_size, srcs);
-      else
-         emit(nir_op_fand, dest_size, srcs);
-      break;
-   case ir_binop_logic_or:
-      if (supports_ints)
-         emit(nir_op_ior, dest_size, srcs);
-      else
-         emit(nir_op_for, dest_size, srcs);
-      break;
-   case ir_binop_logic_xor:
-      if (supports_ints)
-         emit(nir_op_ixor, dest_size, srcs);
-      else
-         emit(nir_op_fxor, dest_size, srcs);
-      break;
    case ir_binop_dot:
       switch (ir->operands[0]->type->vector_elements) {
-         case 2: emit(nir_op_fdot2, dest_size, srcs); break;
-         case 3: emit(nir_op_fdot3, dest_size, srcs); break;
-         case 4: emit(nir_op_fdot4, dest_size, srcs); break;
+         case 2: result = nir_fdot2(&b, srcs[0], srcs[1]); break;
+         case 3: result = nir_fdot3(&b, srcs[0], srcs[1]); break;
+         case 4: result = nir_fdot4(&b, srcs[0], srcs[1]); break;
          default:
             unreachable("not reached");
       }
       break;
 
    case ir_binop_pack_half_2x16_split:
-         emit(nir_op_pack_half_2x16_split, dest_size, srcs);
+         result = nir_pack_half_2x16_split(&b, srcs[0], srcs[1]);
          break;
-   case ir_binop_bfm:   emit(nir_op_bfm, dest_size, srcs);   break;
-   case ir_binop_ldexp: emit(nir_op_ldexp, dest_size, srcs); break;
-   case ir_triop_fma:   emit(nir_op_ffma, dest_size, srcs);  break;
+   case ir_binop_bfm:   result = nir_bfm(&b, srcs[0], srcs[1]);   break;
+   case ir_binop_ldexp: result = nir_ldexp(&b, srcs[0], srcs[1]); break;
+   case ir_triop_fma:
+      result = nir_ffma(&b, srcs[0], srcs[1], srcs[2]);
+      break;
    case ir_triop_lrp:
-      instr = emit(nir_op_flrp, dest_size, srcs);
-      if (ir->operands[0]->type->vector_elements != 1 &&
-          ir->operands[2]->type->vector_elements == 1) {
-         for (unsigned i = 0; i < ir->operands[0]->type->vector_elements;
-              i++) {
-            instr->src[2].swizzle[i] = 0;
-         }
-      }
+      result = nir_flrp(&b, srcs[0], srcs[1], srcs[2]);
       break;
    case ir_triop_csel:
       if (supports_ints)
-         emit(nir_op_bcsel, dest_size, srcs);
+         result = nir_bcsel(&b, srcs[0], srcs[1], srcs[2]);
       else
-         emit(nir_op_fcsel, dest_size, srcs);
+         result = nir_fcsel(&b, srcs[0], srcs[1], srcs[2]);
       break;
    case ir_triop_bfi:
-      instr = emit(nir_op_bfi, dest_size, srcs);
-      for (unsigned i = 0; i < ir->operands[1]->type->vector_elements; i++) {
-         instr->src[0].swizzle[i] = 0;
-      }
+      result = nir_bfi(&b, srcs[0], srcs[1], srcs[2]);
       break;
    case ir_triop_bitfield_extract:
-      instr = emit(out_type == GLSL_TYPE_INT ? nir_op_ibitfield_extract :
-                   nir_op_ubitfield_extract, dest_size, srcs);
-      for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; i++) {
-         instr->src[1].swizzle[i] = 0;
-         instr->src[2].swizzle[i] = 0;
-      }
+      result = (out_type == GLSL_TYPE_INT) ?
+         nir_ibitfield_extract(&b, srcs[0], srcs[1], srcs[2]) :
+         nir_ubitfield_extract(&b, srcs[0], srcs[1], srcs[2]);
       break;
    case ir_quadop_bitfield_insert:
-      instr = emit(nir_op_bitfield_insert, dest_size, srcs);
-      for (unsigned i = 0; i < ir->operands[0]->type->vector_elements; i++) {
-         instr->src[2].swizzle[i] = 0;
-         instr->src[3].swizzle[i] = 0;
-      }
+      result = nir_bitfield_insert(&b, srcs[0], srcs[1], srcs[2], srcs[3]);
       break;
    case ir_quadop_vector:
-      switch (ir->type->vector_elements) {
-         case 2: emit(nir_op_vec2, dest_size, srcs); break;
-         case 3: emit(nir_op_vec3, dest_size, srcs); break;
-         case 4: emit(nir_op_vec4, dest_size, srcs); break;
-         default: unreachable("not reached");
-      }
+      result = nir_vec(&b, srcs, ir->type->vector_elements);
       break;
 
    default:
@@ -1532,13 +1730,9 @@ nir_visitor::visit(ir_expression *ir)
 void
 nir_visitor::visit(ir_swizzle *ir)
 {
-   nir_alu_instr *instr = emit(supports_ints ? nir_op_imov : nir_op_fmov,
-                               ir->type->vector_elements,
-                               evaluate_rvalue(ir->val));
-
    unsigned swizzle[4] = { ir->mask.x, ir->mask.y, ir->mask.z, ir->mask.w };
-   for (unsigned i = 0; i < ir->type->vector_elements; i++)
-      instr->src[0].swizzle[i] = swizzle[i];
+   result = nir_swizzle(&b, evaluate_rvalue(ir->val), swizzle,
+                        ir->type->vector_elements, !supports_ints);
 }
 
 void
@@ -1599,6 +1793,11 @@ nir_visitor::visit(ir_texture *ir)
       num_srcs = 0;
       break;
 
+   case ir_texture_samples:
+      op = nir_texop_texture_samples;
+      num_srcs = 0;
+      break;
+
    default:
       unreachable("not reached");
    }
@@ -1633,26 +1832,28 @@ nir_visitor::visit(ir_texture *ir)
       unreachable("not reached");
    }
 
-   ir->sampler->accept(this);
-   instr->sampler = this->deref_head;
+   instr->sampler = evaluate_deref(&instr->instr, ir->sampler);
 
    unsigned src_number = 0;
 
    if (ir->coordinate != NULL) {
       instr->coord_components = ir->coordinate->type->vector_elements;
-      instr->src[src_number].src = evaluate_rvalue(ir->coordinate);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->coordinate));
       instr->src[src_number].src_type = nir_tex_src_coord;
       src_number++;
    }
 
    if (ir->projector != NULL) {
-      instr->src[src_number].src = evaluate_rvalue(ir->projector);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->projector));
       instr->src[src_number].src_type = nir_tex_src_projector;
       src_number++;
    }
 
    if (ir->shadow_comparitor != NULL) {
-      instr->src[src_number].src = evaluate_rvalue(ir->shadow_comparitor);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->shadow_comparitor));
       instr->src[src_number].src_type = nir_tex_src_comparitor;
       src_number++;
    }
@@ -1666,7 +1867,8 @@ nir_visitor::visit(ir_texture *ir)
          for (unsigned i = 0; i < const_offset->type->vector_elements; i++)
             instr->const_offset[i] = const_offset->value.i[i];
       } else {
-         instr->src[src_number].src = evaluate_rvalue(ir->offset);
+         instr->src[src_number].src =
+            nir_src_for_ssa(evaluate_rvalue(ir->offset));
          instr->src[src_number].src_type = nir_tex_src_offset;
          src_number++;
       }
@@ -1674,7 +1876,8 @@ nir_visitor::visit(ir_texture *ir)
 
    switch (ir->op) {
    case ir_txb:
-      instr->src[src_number].src = evaluate_rvalue(ir->lod_info.bias);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->lod_info.bias));
       instr->src[src_number].src_type = nir_tex_src_bias;
       src_number++;
       break;
@@ -1683,23 +1886,27 @@ nir_visitor::visit(ir_texture *ir)
    case ir_txf:
    case ir_txs:
       if (ir->lod_info.lod != NULL) {
-         instr->src[src_number].src = evaluate_rvalue(ir->lod_info.lod);
+         instr->src[src_number].src =
+            nir_src_for_ssa(evaluate_rvalue(ir->lod_info.lod));
          instr->src[src_number].src_type = nir_tex_src_lod;
          src_number++;
       }
       break;
 
    case ir_txd:
-      instr->src[src_number].src = evaluate_rvalue(ir->lod_info.grad.dPdx);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->lod_info.grad.dPdx));
       instr->src[src_number].src_type = nir_tex_src_ddx;
       src_number++;
-      instr->src[src_number].src = evaluate_rvalue(ir->lod_info.grad.dPdy);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->lod_info.grad.dPdy));
       instr->src[src_number].src_type = nir_tex_src_ddy;
       src_number++;
       break;
 
    case ir_txf_ms:
-      instr->src[src_number].src = evaluate_rvalue(ir->lod_info.sample_index);
+      instr->src[src_number].src =
+         nir_src_for_ssa(evaluate_rvalue(ir->lod_info.sample_index));
       instr->src[src_number].src_type = nir_tex_src_ms_index;
       src_number++;
       break;
@@ -1726,13 +1933,10 @@ nir_visitor::visit(ir_constant *ir)
     * constant initializer and return a dereference.
     */
 
-   nir_variable *var = ralloc(this->shader, nir_variable);
-   var->name = ralloc_strdup(var, "const_temp");
-   var->type = ir->type;
-   var->data.mode = nir_var_local;
+   nir_variable *var =
+      nir_local_variable_create(this->impl, ir->type, "const_temp");
    var->data.read_only = true;
    var->constant_initializer = constant_copy(ir, var);
-   exec_list_push_tail(&this->impl->locals, &var->node);
 
    this->deref_head = nir_deref_var_create(this->shader, var);
    this->deref_tail = &this->deref_head->deref;
@@ -1759,7 +1963,7 @@ nir_visitor::visit(ir_dereference_record *ir)
    int field_index = this->deref_tail->type->field_index(ir->field);
    assert(field_index >= 0);
 
-   nir_deref_struct *deref = nir_deref_struct_create(this->shader, field_index);
+   nir_deref_struct *deref = nir_deref_struct_create(this->deref_tail, field_index);
    deref->deref.type = ir->type;
    this->deref_tail->child = &deref->deref;
    this->deref_tail = &deref->deref;
@@ -1777,11 +1981,21 @@ nir_visitor::visit(ir_dereference_array *ir)
       deref->base_offset = const_index->value.u[0];
    } else {
       deref->deref_array_type = nir_deref_array_type_indirect;
-      deref->indirect = evaluate_rvalue(ir->array_index);
+      deref->indirect =
+         nir_src_for_ssa(evaluate_rvalue(ir->array_index));
    }
 
    ir->array->accept(this);
 
    this->deref_tail->child = &deref->deref;
+   ralloc_steal(this->deref_tail, deref);
    this->deref_tail = &deref->deref;
 }
+
+void
+nir_visitor::visit(ir_barrier *ir)
+{
+   nir_intrinsic_instr *instr =
+      nir_intrinsic_instr_create(this->shader, nir_intrinsic_barrier);
+   nir_builder_instr_insert(&b, &instr->instr);
+}