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nir/opt_vectorize: don't lose exact and no_*_wrap flags

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This fixes a bunch of dEQP GLES tests.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6694>
This commit is contained in:
Marek Olšák
2020-09-11 14:55:28 -04:00
parent eceb4fb904
commit 656d8edd9e
1 changed files with 11 additions and 0 deletions
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11
src/compiler/nir/nir_opt_vectorize.c
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@@ -194,6 +194,17 @@ instr_try_combine(struct nir_shader *nir, nir_instr *instr1, nir_instr *instr2,
total_components, alu1->dest.dest.ssa.bit_size, NULL); total_components, alu1->dest.dest.ssa.bit_size, NULL);
new_alu->dest.write_mask = (1 << total_components) - 1; new_alu->dest.write_mask = (1 << total_components) - 1;
/* If either channel is exact, we have to preserve it even if it's
* not optimal for other channels.
*/
new_alu->exact = alu1->exact || alu2->exact;
/* If all channels don't wrap, we can say that the whole vector doesn't
* wrap.
*/
new_alu->no_signed_wrap = alu1->no_signed_wrap && alu2->no_signed_wrap;
new_alu->no_unsigned_wrap = alu1->no_unsigned_wrap && alu2->no_unsigned_wrap;
for (unsigned i = 0; i < nir_op_infos[alu1->op].num_inputs; i++) { for (unsigned i = 0; i < nir_op_infos[alu1->op].num_inputs; i++) {
/* handle constant merging case */ /* handle constant merging case */
if (alu1->src[i].src.ssa != alu2->src[i].src.ssa) { if (alu1->src[i].src.ssa != alu2->src[i].src.ssa) {