[PATCH] D67771: [AMDGPU] fixed underflow in getOccupancyWithNumVGPRs
Stanislav Mekhanoshin via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 19 13:10:55 PDT 2019
This revision was automatically updated to reflect the committed changes.
Closed by commit rL372350: [AMDGPU] fixed underflow in getOccupancyWithNumVGPRs (authored by rampitec, committed by ).
Changed prior to commit:
https://reviews.llvm.org/D67771?vs=220893&id=220903#toc
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D67771/new/
https://reviews.llvm.org/D67771
Files:
llvm/trunk/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
Index: llvm/trunk/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
@@ -599,7 +599,7 @@
if (VGPRs < Granule)
return MaxWaves;
unsigned RoundedRegs = ((VGPRs + Granule - 1) / Granule) * Granule;
- return std::min(getTotalNumVGPRs() / RoundedRegs, MaxWaves);
+ return std::min(std::max(getTotalNumVGPRs() / RoundedRegs, 1u), MaxWaves);
}
unsigned GCNSubtarget::getReservedNumSGPRs(const MachineFunction &MF) const {
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