diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/CGExpr.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp index 3d8d192a2d..ad2f78b8e7 100644 --- a/lib/CodeGen/CGExpr.cpp +++ b/lib/CodeGen/CGExpr.cpp @@ -214,8 +214,9 @@ RValue CodeGenFunction::EmitLoadOfBitfieldLValue(LValue LV, llvm::Value *Val = Builder.CreateLoad(Ptr, LV.isVolatileQualified(), "tmp"); // Shift to proper location. - Val = Builder.CreateLShr(Val, llvm::ConstantInt::get(EltTy, StartBit), - "bf.lo"); + if (StartBit) + Val = Builder.CreateLShr(Val, llvm::ConstantInt::get(EltTy, StartBit), + "bf.lo"); // Mask off unused bits. llvm::Constant *LowMask = |