[llvm] [AMDGPU] Fix bad removal of s_delay_alu (PR #145728)
Ana Mihajlovic via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 27 05:08:04 PDT 2025
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@@ -49,9 +49,17 @@ class AMDGPUInsertDelayAlu {
static bool instructionWaitsForSGPRWrites(const MachineInstr &MI) {
// These instruction types wait for VA_SDST==0 before issuing.
- const uint64_t VA_SDST_0 = SIInstrFlags::SALU | SIInstrFlags::SMRD;
+ uint64_t MIFlags = MI.getDesc().TSFlags;
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mihajlovicana wrote:
> This function seems to be ignoring the handful of VALU instructions which do read SGPRs? Also inlineasm
VALU->SGPR->VALU doesn't use VA_SDST counter, at least I haven't seen that
https://github.com/llvm/llvm-project/pull/145728
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