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agx: optimize signext+iadd

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32081>
This commit is contained in:
Alyssa Rosenzweig
2024-10-30 12:36:38 -04:00
committed by Marge Bot
parent cfe0a9acec
commit 200d0794e2
1 changed files with 20 additions and 0 deletions
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src/asahi/compiler/agx_optimizer.c
+20
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@@ -468,6 +468,24 @@ agx_optimizer_bitop(agx_instr **defs, agx_instr *I)
}
}
/*
* Fuse sign-extends into addition-like instructions:
*/
static void
agx_optimizer_signext(agx_instr **defs, agx_instr *I)
{
agx_foreach_ssa_src(I, s) {
agx_index src = I->src[s];
agx_instr *def = defs[src.value];
if (def == NULL || def->op != AGX_OPCODE_SIGNEXT)
continue;
agx_replace_src(I, s, def->src[0]);
assert(!I->src[s].abs && "sign-extended");
}
}
void
agx_optimizer_forward(agx_context *ctx)
{
@@ -504,6 +522,8 @@ agx_optimizer_forward(agx_context *ctx)
agx_optimizer_ballot(ctx, defs, I);
} else if (I->op == AGX_OPCODE_BITOP) {
agx_optimizer_bitop(defs, I);
} else if (I->op == AGX_OPCODE_IADD) {
agx_optimizer_signext(defs, I);
}
}