diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index afcabdcda7e..a685fdb6c7e 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -2405,8 +2405,9 @@ X86TargetLowering::LowerFormalArguments(SDValue Chain, StackSize = GetAlignedArgumentStackSize(StackSize, DAG); // If the function takes variable number of arguments, make a frame index for - // the start of the first vararg value... for expansion of llvm.va_start. - if (isVarArg) { + // the start of the first vararg value... for expansion of llvm.va_start. We + // can skip this if there are no va_start calls. + if (isVarArg && MFI->hasVAStart()) { if (Is64Bit || (CallConv != CallingConv::X86_FastCall && CallConv != CallingConv::X86_ThisCall)) { FuncInfo->setVarArgsFrameIndex(MFI->CreateFixedObject(1, StackSize,true)); |
