diff options
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 11 | ||||
| -rw-r--r-- | test/Transforms/InstCombine/2009-02-04-FPBitcast.ll | 7 |
2 files changed, 12 insertions, 6 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 5c1578f74b..5f7cbcd0b6 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -153,12 +153,11 @@ static Constant *FoldBitCast(Constant *V, const Type *DestTy) { // Integral -> Integral. This is a no-op because the bit widths must // be the same. Consequently, we just fold to V. return V; - - if (DestTy->isFloatingPoint()) { - assert((DestTy == Type::DoubleTy || DestTy == Type::FloatTy) && - "Unknown FP type!"); - return ConstantFP::get(APFloat(CI->getValue())); - } + + if (DestTy->isFloatingPoint()) + return ConstantFP::get(APFloat(CI->getValue(), + DestTy != Type::PPC_FP128Ty)); + // Otherwise, can't fold this (vector?) return 0; } diff --git a/test/Transforms/InstCombine/2009-02-04-FPBitcast.ll b/test/Transforms/InstCombine/2009-02-04-FPBitcast.ll new file mode 100644 index 0000000000..4d7b70a115 --- /dev/null +++ b/test/Transforms/InstCombine/2009-02-04-FPBitcast.ll @@ -0,0 +1,7 @@ +; RUN: llvm-as < %s | opt -instcombine +; PR3468 + +define x86_fp80 @cast() { + %tmp = bitcast i80 0 to x86_fp80 ; <x86_fp80> [#uses=1] + ret x86_fp80 %tmp +} |