nir: add bit_size info to nir_ssa_undef_instr_create()

v2:
- Make the users to give the right bit_sizes as arguments (Jason).

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/compiler/nir/glsl_to_nir.cpp

@@ -735,7 +735,7 @@ nir_visitor::visit(ir_call *ir)
       case nir_intrinsic_image_samples:
       case nir_intrinsic_image_size: {
          nir_ssa_undef_instr *instr_undef =
-            nir_ssa_undef_instr_create(shader, 1);
+            nir_ssa_undef_instr_create(shader, 1, 32);
          nir_builder_instr_insert(&b, &instr_undef->instr);
 
          /* Set the image variable dereference. */

src/compiler/nir/nir.c

@@ -558,12 +558,14 @@ nir_parallel_copy_instr_create(nir_shader *shader)
 }
 
 nir_ssa_undef_instr *
-nir_ssa_undef_instr_create(nir_shader *shader, unsigned num_components)
+nir_ssa_undef_instr_create(nir_shader *shader,
+                           unsigned num_components,
+                           unsigned bit_size)
 {
    nir_ssa_undef_instr *instr = ralloc(shader, nir_ssa_undef_instr);
    instr_init(&instr->instr, nir_instr_type_ssa_undef);
 
-   nir_ssa_def_init(&instr->instr, &instr->def, num_components, 32, NULL);
+   nir_ssa_def_init(&instr->instr, &instr->def, num_components, bit_size, NULL);
 
    return instr;
 }

src/compiler/nir/nir.h

@@ -1845,7 +1845,8 @@ nir_phi_instr *nir_phi_instr_create(nir_shader *shader);
 nir_parallel_copy_instr *nir_parallel_copy_instr_create(nir_shader *shader);
 
 nir_ssa_undef_instr *nir_ssa_undef_instr_create(nir_shader *shader,
-                                                unsigned num_components);
+                                                unsigned num_components,
+                                                unsigned bit_size);
 
 nir_deref_var *nir_deref_var_create(void *mem_ctx, nir_variable *var);
 nir_deref_array *nir_deref_array_create(void *mem_ctx);

src/compiler/nir/nir_builder.h

@@ -78,7 +78,7 @@ static inline nir_ssa_def *
 nir_ssa_undef(nir_builder *build, unsigned num_components, unsigned bit_size)
 {
    nir_ssa_undef_instr *undef =
-      nir_ssa_undef_instr_create(build->shader, num_components);
+      nir_ssa_undef_instr_create(build->shader, num_components, bit_size);
    undef->def.bit_size = bit_size;
    if (!undef)
       return NULL;

src/compiler/nir/nir_clone.c

@@ -372,7 +372,8 @@ static nir_ssa_undef_instr *
 clone_ssa_undef(clone_state *state, const nir_ssa_undef_instr *sa)
 {
    nir_ssa_undef_instr *nsa =
-      nir_ssa_undef_instr_create(state->ns, sa->def.num_components);
+      nir_ssa_undef_instr_create(state->ns, sa->def.num_components,
+                                 sa->def.bit_size);
 
    add_remap(state, &nsa->def, &sa->def);
 

src/compiler/nir/nir_control_flow.c

@@ -281,7 +281,8 @@ insert_phi_undef(nir_block *block, nir_block *pred)
       nir_phi_instr *phi = nir_instr_as_phi(instr);
       nir_ssa_undef_instr *undef =
          nir_ssa_undef_instr_create(ralloc_parent(phi),
-                                    phi->dest.ssa.num_components);
+                                    phi->dest.ssa.num_components,
+                                    phi->dest.ssa.bit_size);
       nir_instr_insert_before_cf_list(&impl->body, &undef->instr);
       nir_phi_src *src = ralloc(phi, nir_phi_src);
       src->pred = pred;
@@ -691,7 +692,8 @@ replace_ssa_def_uses(nir_ssa_def *def, void *void_impl)
    void *mem_ctx = ralloc_parent(impl);
 
    nir_ssa_undef_instr *undef =
-      nir_ssa_undef_instr_create(mem_ctx, def->num_components);
+      nir_ssa_undef_instr_create(mem_ctx, def->num_components,
+                                 def->bit_size);
    nir_instr_insert_before_cf_list(&impl->body, &undef->instr);
    nir_ssa_def_rewrite_uses(def, nir_src_for_ssa(&undef->def));
    return true;

src/compiler/nir/nir_lower_vars_to_ssa.c

@@ -504,8 +504,8 @@ rename_variables_block(nir_block *block, struct lower_variables_state *state)
              */
             nir_ssa_undef_instr *undef =
                nir_ssa_undef_instr_create(state->shader,
-                                          intrin->num_components);
+                                          intrin->num_components,
-            undef->def.bit_size = intrin->dest.ssa.bit_size;
+                                          intrin->dest.ssa.bit_size);
 
             nir_instr_insert_before(&intrin->instr, &undef->instr);
             nir_instr_remove(&intrin->instr);

src/compiler/nir/nir_phi_builder.c

@@ -195,7 +195,8 @@ nir_phi_builder_value_get_block_def(struct nir_phi_builder_value *val,
           */
          nir_ssa_undef_instr *undef =
             nir_ssa_undef_instr_create(val->builder->shader,
-                                       val->num_components);
+                                       val->num_components,
+                                       val->bit_size);
          nir_instr_insert(nir_before_cf_list(&val->builder->impl->body),
                           &undef->instr);
          val->defs[block->index] = &undef->def;

src/compiler/nir/nir_to_ssa.c

@@ -160,7 +160,8 @@ static nir_ssa_def *get_ssa_src(nir_register *reg, rewrite_state *state)
        * to preserve the information that this source is undefined
        */
       nir_ssa_undef_instr *instr =
-         nir_ssa_undef_instr_create(state->mem_ctx, reg->num_components);
+         nir_ssa_undef_instr_create(state->mem_ctx, reg->num_components,
+                                    reg->bit_size);
 
       /*
        * We could just insert the undefined instruction before the instruction