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aco: Support s_cselect_b64 in SCC no-compare optimization.

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This was simply left out by accident when I wrote this.

Fossil DB stats on Navi 21:

Totals from 70165 (52.01% of 134906) affected shaders:
CodeSize: 246375656 -> 245814396 (-0.23%)
Instrs: 46519773 -> 46379458 (-0.30%)
Latency: 385159303 -> 385089261 (-0.02%); split: -0.02%, +0.00%
InvThroughput: 66490172 -> 66487867 (-0.00%); split: -0.00%, +0.00%

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16266>
This commit is contained in:
Timur Kristóf 2022-03-23 18:45:36 +01:00 • committed by Marge Bot
parent b0ef7c7c82
commit e69de0f81d
1 changed files with 6 additions and 3 deletions
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9
src/amd/compiler/aco_optimizer_postRA.cpp
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@ -327,11 +327,13 @@ try_optimize_scc_nocompare(pr_opt_ctx& ctx, aco_ptr<Instruction>& instr)
: aco_opcode::s_cmp_lg_u32;
} else if ((instr->format == Format::PSEUDO_BRANCH && instr->operands.size() == 1 &&
instr->operands[0].physReg() == scc) ||
instr->opcode == aco_opcode::s_cselect_b32) {
instr->opcode == aco_opcode::s_cselect_b32 ||
instr->opcode == aco_opcode::s_cselect_b64) {
/* For cselect, operand 2 is the SCC condition */
unsigned scc_op_idx = 0;
if (instr->opcode == aco_opcode::s_cselect_b32) {
if (instr->opcode == aco_opcode::s_cselect_b32 ||
instr->opcode == aco_opcode::s_cselect_b64) {
scc_op_idx = 2;
}
@ -359,7 +361,8 @@ try_optimize_scc_nocompare(pr_opt_ctx& ctx, aco_ptr<Instruction>& instr)
if (instr->format == Format::PSEUDO_BRANCH)
instr->opcode = instr->opcode == aco_opcode::p_cbranch_z ? aco_opcode::p_cbranch_nz
: aco_opcode::p_cbranch_z;
else if (instr->opcode == aco_opcode::s_cselect_b32)
else if (instr->opcode == aco_opcode::s_cselect_b32 ||
instr->opcode == aco_opcode::s_cselect_b64)
std::swap(instr->operands[0], instr->operands[1]);
else
unreachable(