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aco: don't apply constant to SDWA on GFX8

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Cc: 20.2 <mesa-stable>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6662>
(cherry picked from commit 5a8447cbd4)
This commit is contained in:
Rhys Perry 2020-09-07 20:21:37 +01:00 • committed by Dylan Baker
parent f6f1995898
commit 068640e23b
2 changed files with 3 additions and 2 deletions
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2
.pick_status.json
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@ -850,7 +850,7 @@
"description": "aco: don't apply constant to SDWA on GFX8",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"master_sha": null,
"because_sha": null
},

3
src/amd/compiler/aco_optimizer.cpp
View file

@ -903,7 +903,8 @@ void label_instruction(opt_ctx &ctx, Block& block, aco_ptr<Instruction>& instr)
continue;
}
unsigned bits = get_operand_size(instr, i);
if (info.is_constant(bits) && alu_can_accept_constant(instr->opcode, i)) {
if (info.is_constant(bits) && alu_can_accept_constant(instr->opcode, i) &&
(!instr->isSDWA() || ctx.program->chip_class >= GFX9)) {
Operand op = get_constant_op(ctx, info, bits);
perfwarn(instr->opcode == aco_opcode::v_cndmask_b32 && i == 2, "v_cndmask_b32 with a constant selector", instr.get());
if (i == 0 || instr->opcode == aco_opcode::v_readlane_b32 || instr->opcode == aco_opcode::v_writelane_b32) {