[PowerPC] PR20280 - Slots for byval parameters are not immutable
Found by inspection while looking at PR20280: code would mark slots
in the parameter save area where a byval parameter is passed as
"immutable". This is not correct since code is allowed to modify
byval parameters in place in the parameter save area.
llvm-svn: 214517
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 9673533..9ba2f91 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2688,7 +2688,7 @@
int FI;
if (HasParameterArea ||
ArgSize + ArgOffset > LinkageSize + Num_GPR_Regs * PtrByteSize)
- FI = MFI->CreateFixedObject(ArgSize, ArgOffset, true);
+ FI = MFI->CreateFixedObject(ArgSize, ArgOffset, false);
else
FI = MFI->CreateStackObject(ArgSize, Align, false);
SDValue FIN = DAG.getFrameIndex(FI, PtrVT);