From: Reid Spencer <rspencer@reidspencer.com>
Date: Mon, 9 Aug 2004 01:24:32 +0000 (+0000)
Subject: Fix stack size processing now that the return address isn't an implied
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=524a60587d1505aa441400a0065d60d8203aac82;p=oota-llvm.git

Fix stack size processing now that the return address isn't an implied
push onto the top of the stack like x86, which uses the local area
offset.  This will allow the removal of PowerPCPEI.cpp soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15573 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PowerPCRegisterInfo.cpp b/lib/Target/PowerPC/PowerPCRegisterInfo.cpp
index 42f2d3e9e83..7607a058245 100644
--- a/lib/Target/PowerPC/PowerPCRegisterInfo.cpp
+++ b/lib/Target/PowerPC/PowerPCRegisterInfo.cpp
@@ -210,9 +210,11 @@ void PowerPCRegisterInfo::emitPrologue(MachineFunction &MF) const {
   // Do we need to allocate space on the stack?
   if (NumBytes == 0) return;
 
-  // Round the size to a multiple of the alignment
+  // Add the size of R1 to  NumBytes size for the store of R1 to the bottom 
+  // of the stack and round the size to a multiple of the alignment.
   unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment();
-  NumBytes = (NumBytes+Align-1)/Align*Align;
+  unsigned Size = getRegClass(PPC32::R1)->getSize();
+  NumBytes = (NumBytes+Size+Align-1)/Align*Align;
 
   // Update frame info to pretend that this is part of the stack...
   MFI->setStackSize(NumBytes);