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Eliminate the stack slot used to save the global base register.

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The long branch pass (fixed in r160601) no longer uses the global base register
to compute addresses of branch destinations, so it is not necessary to reserve
a slot on the stack.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160703 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka
2012-07-25 03:16:47 +00:00
parent d9fb65dee6
commit de4a127470
8 changed files with 76 additions and 120 deletions
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lib/Target/Mips/MipsFrameLowering.cpp
+1 -5
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@@ -113,11 +113,7 @@ void MipsFrameLowering::emitPrologue(MachineFunction &MF) const {
// First, compute final stack size.
unsigned StackAlign = getStackAlignment();
uint64_t StackSize = RoundUpToAlignment(MFI->getStackSize(), StackAlign);
if (MipsFI->globalBaseRegSet())
StackSize += MFI->getObjectOffset(MipsFI->getGlobalRegFI()) + StackAlign;
else
StackSize += RoundUpToAlignment(MipsFI->getMaxCallFrameSize(), StackAlign);
StackSize += RoundUpToAlignment(MipsFI->getMaxCallFrameSize(), StackAlign);
// Update stack size
MFI->setStackSize(StackSize);