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pan/bi: See through splits for var_tex fusion 

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16585>
This commit is contained in:
Alyssa Rosenzweig 2022-05-13 11:54:19 -04:00 committed by Marge Bot
parent 1f25f78a9f
commit 3636cddde1
1 changed files with 15 additions and 2 deletions
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17
src/panfrost/bifrost/bi_opt_mod_props.c
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@ -289,8 +289,21 @@ bi_opt_mod_prop_backward(bi_context *ctx)
/* Destination has a single use, try to propagate */
bool propagated =
bi_optimizer_clamp(I, use) ||
bi_optimizer_var_tex(ctx, I, use);
bi_optimizer_clamp(I, use);
if (!propagated && I->op == BI_OPCODE_LD_VAR_IMM && use->op == BI_OPCODE_SPLIT_I32) {
/* Need to see through the split in a
* ld_var_imm/split/var_tex sequence
*/
assert(bi_is_ssa(use->dest[0]));
bi_instr *tex = uses[use->dest[0].value];
if (!tex || BITSET_TEST(multiple, use->dest[0].value))
continue;
use = tex;
propagated = bi_optimizer_var_tex(ctx, I, use);
}
if (propagated) {
bi_remove_instruction(use);