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| author | Lei Zhang <antiagainst@google.com> | 2020-07-12 13:03:23 -0400 |
|---|---|---|
| committer | Lei Zhang <antiagainst@google.com> | 2020-07-13 16:15:31 -0400 |
| commit | 4ba45a778a13eab1495a75a14682f874016f3d21 (patch) | |
| tree | c7383f94e0ee62a4356b9567f554f0cb80824198 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 9908a3b9f521c954cbf6adcec35b14b2f6c8da49 (diff) | |
| download | llvm-4ba45a778a13eab1495a75a14682f874016f3d21.zip llvm-4ba45a778a13eab1495a75a14682f874016f3d21.tar.gz llvm-4ba45a778a13eab1495a75a14682f874016f3d21.tar.bz2 | |
[mlir][StandardToSPIRV] Fix conversion for signed remainder
Per the Vulkan's SPIR-V environment spec, "for the OpSRem and OpSMod
instructions, if either operand is negative the result is undefined."
So we cannot directly use spv.SRem/spv.SMod if either operand can be
negative. Emulate it via spv.UMod.
Because the emulation uses spv.SNegate, this commit also defines
spv.SNegate.
Differential Revision: https://reviews.llvm.org/D83679
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
0 files changed, 0 insertions, 0 deletions