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nir: Make load_const SSA-only

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As it was, we weren't ever using load_const in a non-SSA way.  This allows
us to substantially simplify the load_const instruction.  If we ever need a
non-SSA constant load, we can do a load_const and an imov.

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand
2014-12-15 17:32:56 -08:00
parent 675ffdef30
commit 2c7da78805
16 changed files with 54 additions and 162 deletions
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10
src/glsl/nir/nir_search.c
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@@ -275,17 +275,15 @@ construct_value(const nir_search_value *value, nir_alu_type type,
case nir_search_value_constant: {
const nir_search_constant *c = nir_search_value_as_constant(value);
nir_load_const_instr *load = nir_load_const_instr_create(mem_ctx);
load->dest.is_ssa = true;
nir_ssa_def_init(&load->instr, &load->dest.ssa, 1, NULL);
nir_load_const_instr *load = nir_load_const_instr_create(mem_ctx, 1);
switch (type) {
case nir_type_float:
load->dest.ssa.name = ralloc_asprintf(mem_ctx, "%f", c->data.f);
load->def.name = ralloc_asprintf(mem_ctx, "%f", c->data.f);
load->value.f[0] = c->data.f;
break;
case nir_type_int:
load->dest.ssa.name = ralloc_asprintf(mem_ctx, "%d", c->data.i);
load->def.name = ralloc_asprintf(mem_ctx, "%d", c->data.i);
load->value.i[0] = c->data.i;
break;
case nir_type_unsigned:
@@ -300,7 +298,7 @@ construct_value(const nir_search_value *value, nir_alu_type type,
nir_alu_src val = {
.src.is_ssa = true,
.src.ssa = &load->dest.ssa,
.src.ssa = &load->def,
.negate = false,
.abs = false,
.swizzle = { 0, 0, 0, 0 } /* Splatted scalar */