From ee2e0e347e253d103ebbb0c59fcb48ca2d80b7ef Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 30 Mar 2011 23:44:13 +0000 Subject: Don't try to create zero-sized stack objects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128586 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/ARM/ARMISelLowering.cpp | 5 +++-- lib/Target/X86/X86ISelLowering.cpp | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'lib') diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp index 11ff6bf965..16b110f39b 100644 --- a/lib/Target/ARM/ARMISelLowering.cpp +++ b/lib/Target/ARM/ARMISelLowering.cpp @@ -2391,8 +2391,9 @@ ARMTargetLowering::LowerFormalArguments(SDValue Chain, // In case of tail call optimization mark all arguments mutable. Since they // could be overwritten by lowering of arguments in case of a tail call. if (Flags.isByVal()) { - int FI = MFI->CreateFixedObject(Flags.getByValSize(), - VA.getLocMemOffset(), false); + unsigned Bytes = Flags.getByValSize(); + if (Bytes == 0) Bytes = 1; // Don't create zero-sized stack objects. + int FI = MFI->CreateFixedObject(Bytes, VA.getLocMemOffset(), false); InVals.push_back(DAG.getFrameIndex(FI, getPointerTy())); } else { int FI = MFI->CreateFixedObject(VA.getLocVT().getSizeInBits()/8, diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 7d301e5e07..cd1d2019d2 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -1639,8 +1639,9 @@ X86TargetLowering::LowerMemArgument(SDValue Chain, // In case of tail call optimization mark all arguments mutable. Since they // could be overwritten by lowering of arguments in case of a tail call. if (Flags.isByVal()) { - int FI = MFI->CreateFixedObject(Flags.getByValSize(), - VA.getLocMemOffset(), isImmutable); + unsigned Bytes = Flags.getByValSize(); + if (Bytes == 0) Bytes = 1; // Don't create zero-sized stack objects. + int FI = MFI->CreateFixedObject(Bytes, VA.getLocMemOffset(), isImmutable); return DAG.getFrameIndex(FI, getPointerTy()); } else { int FI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8, -- cgit v1.2.3-70-g09d2