diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2020-07-26 19:46:28 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2020-07-26 19:46:28 +0000 |
| commit | 2cedf089162d7ff08af2fb09e4adea44608e7233 (patch) | |
| tree | ba6ce010fd991778200b43335a161f546d953a55 /llvm/lib/Analysis/ConstantFolding.cpp | |
| parent | cfca06d7963fa0909f90483b42a6d7d194d01e08 (diff) | |
Notes
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 8c66decaaf58d..6feffcbb98e1f 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -342,8 +342,12 @@ Constant *llvm::ConstantFoldLoadThroughBitcast(Constant *C, Type *DestTy, // pointers legally). if (C->isNullValue() && !DestTy->isX86_MMXTy()) return Constant::getNullValue(DestTy); - if (C->isAllOnesValue() && !DestTy->isX86_MMXTy() && - !DestTy->isPtrOrPtrVectorTy()) // Don't get ones for ptr types! + if (C->isAllOnesValue() && + (DestTy->isIntegerTy() || DestTy->isFloatingPointTy() || + DestTy->isVectorTy()) && + !DestTy->isX86_MMXTy() && !DestTy->isPtrOrPtrVectorTy()) + // Get ones when the input is trivial, but + // only for supported types inside getAllOnesValue. return Constant::getAllOnesValue(DestTy); // If the type sizes are the same and a cast is legal, just directly |