[llvm] r214517 - [PowerPC] PR20280 - Slots for byval parameters are not immutable

[Ulrich Weigand]

Author: uweigand
Date: Fri Aug  1 09:35:58 2014
New Revision: 214517

URL: http://llvm.org/viewvc/llvm-project?rev=214517&view=rev
Log:
[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.


Modified:
    llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp

Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=214517&r1=214516&r2=214517&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Fri Aug  1 09:35:58 2014
@@ -2688,7 +2688,7 @@ PPCTargetLowering::LowerFormalArguments_
       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);