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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-05-21 00:14:04 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-05-21 00:14:04 +0000 |
| commit | 2907e51246a8cf0a440fa1767f94dc10eda195eb (patch) | |
| tree | 2d881318e120ee033cd3c1b26d0bbbdeba5afee4 /llvm/lib | |
| parent | be8e2e0fa8076d6d6c9e1c4f84a1edd2949192dd (diff) | |
| download | bcm5719-llvm-2907e51246a8cf0a440fa1767f94dc10eda195eb.tar.gz bcm5719-llvm-2907e51246a8cf0a440fa1767f94dc10eda195eb.zip | |
Fix constant folding of addrspacecast of null
This should not be making assumptions on the value of
the casted pointer.
llvm-svn: 270293
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/IR/ConstantFold.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/IR/ConstantFold.cpp b/llvm/lib/IR/ConstantFold.cpp index a338d01a83d..623ce701b60 100644 --- a/llvm/lib/IR/ConstantFold.cpp +++ b/llvm/lib/IR/ConstantFold.cpp @@ -531,7 +531,8 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, Constant *V, return UndefValue::get(DestTy); } - if (V->isNullValue() && !DestTy->isX86_MMXTy()) + if (V->isNullValue() && !DestTy->isX86_MMXTy() && + opc != Instruction::AddrSpaceCast) return Constant::getNullValue(DestTy); // If the cast operand is a constant expression, there's a few things we can |
