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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2018-08-10 18:58:49 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2018-08-10 18:58:49 +0000 |
| commit | d35f46caf10bcf366569793bb1d24a6e82e917f7 (patch) | |
| tree | beada65af98990c085517a9cc6d245955db9070a /llvm/lib/Transforms | |
| parent | 8ad00d30faad798dc62fa39ffe24125c3c57f9c7 (diff) | |
| download | bcm5719-llvm-d35f46caf10bcf366569793bb1d24a6e82e917f7.tar.gz bcm5719-llvm-d35f46caf10bcf366569793bb1d24a6e82e917f7.zip | |
AMDGPU: Turn class x, p_zero|n_zero into fcmp oeq x, 0
The library does use this for some reason.
llvm-svn: 339461
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index 310b87e931c..f0c4cebd7fd 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -3195,6 +3195,15 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { return replaceInstUsesWith(*II, FCmp); } + if (Mask == (N_ZERO | P_ZERO)) { + // Equivalent of == 0. + Value *FCmp = Builder.CreateFCmpOEQ( + Src0, ConstantFP::get(Src0->getType(), 0.0)); + + FCmp->takeName(II); + return replaceInstUsesWith(*II, FCmp); + } + const ConstantFP *CVal = dyn_cast<ConstantFP>(Src0); if (!CVal) { if (isa<UndefValue>(Src0)) |
