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nir: Support lowering vote intrinsics 

... trivially (as allowed by the spec!) by reusing the existing
nir_opt_intrinsics code.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner 2017-06-22 12:20:18 -07:00
parent d4c9d6a3b2
commit 742cc6118a
2 changed files with 4 additions and 2 deletions
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2
src/compiler/nir/nir.h
View File

@ -1821,6 +1821,8 @@ typedef struct nir_shader_compiler_options {
bool lower_extract_byte;
bool lower_extract_word;
bool lower_vote_trivial;
/**
* Does the driver support real 32-bit integers? (Otherwise, integers
* are simulated by floats.)

4
src/compiler/nir/nir_opt_intrinsics.c
View File

@ -48,7 +48,7 @@ opt_intrinsics_impl(nir_function_impl *impl)
case nir_intrinsic_vote_any:
case nir_intrinsic_vote_all: {
nir_const_value *val = nir_src_as_const_value(intrin->src[0]);
if (!val)
if (!val && !b.shader->options->lower_vote_trivial)
continue;
replacement = nir_ssa_for_src(&b, intrin->src[0], 1);
@ -56,7 +56,7 @@ opt_intrinsics_impl(nir_function_impl *impl)
}
case nir_intrinsic_vote_eq: {
nir_const_value *val = nir_src_as_const_value(intrin->src[0]);
if (!val)
if (!val && !b.shader->options->lower_vote_trivial)
continue;
replacement = nir_imm_int(&b, NIR_TRUE);