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nir/search: Extend 'a@bool' to handle a couple of system values.

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load_front_face and load_helper_invocation produce booleans.

On Broadwell:

total instructions in shared programs: 11638956 -> 11638011 (-0.01%)
instructions in affected programs: 115093 -> 114148 (-0.82%)
helped: 628
HURT: 14

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke
2016-08-17 15:03:00 -07:00
parent e8543feba7
commit 3a9e6102b4
1 changed files with 7 additions and 0 deletions
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7
src/compiler/nir/nir_search.c
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@@ -78,6 +78,13 @@ src_is_type(nir_src src, nir_alu_type type)
}
return nir_alu_type_get_base_type(output_type) == type;
} else if (src.ssa->parent_instr->type == nir_instr_type_intrinsic) {
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(src.ssa->parent_instr);
if (type == nir_type_bool) {
return intr->intrinsic == nir_intrinsic_load_front_face ||
intr->intrinsic == nir_intrinsic_load_helper_invocation;
}
}
/* don't know */