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agx: implement get_sr remat

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wanderer/386.shader_test - MESA_SHADER_FRAGMENT shader: 16268 inst, 110728 bytes, 255 halfregs, 384 threads, 5 loops, 436:720 spills:fills
wanderer/386.shader_test - MESA_SHADER_FRAGMENT shader: 16255 inst, 110670 bytes, 255 halfregs, 384 threads, 5 loops, 435:719 spills:fills

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28483>
This commit is contained in:
Alyssa Rosenzweig
2024-02-29 14:13:24 -04:00
committed by Marge Bot
parent 03000030d0
commit 55d7267d6c
1 changed files with 19 additions and 4 deletions
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src/asahi/compiler/agx_spill.c
+19 -4
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@@ -275,14 +275,29 @@ reconstruct_index(struct spill_ctx *ctx, unsigned node)
static bool
can_remat(agx_instr *I)
{
return I->op == AGX_OPCODE_MOV_IMM;
switch (I->op) {
case AGX_OPCODE_MOV_IMM:
case AGX_OPCODE_GET_SR:
return true;
default:
return false;
}
}
static void
static agx_instr *
remat_to(agx_builder *b, agx_index dst, struct spill_ctx *ctx, unsigned node)
{
assert(can_remat(ctx->remat[node]));
agx_mov_imm_to(b, dst, ctx->remat[node]->imm);
agx_instr *I = ctx->remat[node];
assert(can_remat(I));
switch (I->op) {
case AGX_OPCODE_MOV_IMM:
return agx_mov_imm_to(b, dst, I->imm);
case AGX_OPCODE_GET_SR:
return agx_get_sr_to(b, dst, I->sr);
default:
unreachable("invalid remat");
}
}
static void