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Make sure there is enough room for RA. getStackSize needs to be cleaned up but

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we will do that when we implement the full save/restore.

Patch by Reed Kotler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164051 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka
2012-09-17 20:02:42 +00:00
parent 8dcc99496d
commit ff1547890a
1 changed files with 4 additions and 0 deletions
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4
lib/Target/Mips/Mips16FrameLowering.cpp
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@@ -35,6 +35,8 @@ void Mips16FrameLowering::emitPrologue(MachineFunction &MF) const {
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc(); DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
uint64_t StackSize = MFI->getStackSize(); uint64_t StackSize = MFI->getStackSize();
StackSize += 16; // need to allocate space for RA. Clean this up later
// when we fix the save/restore instruction. TBD..
// No need to allocate space on the stack. // No need to allocate space on the stack.
if (StackSize == 0 && !MFI->adjustsStack()) return; if (StackSize == 0 && !MFI->adjustsStack()) return;
@@ -52,6 +54,8 @@ void Mips16FrameLowering::emitEpilogue(MachineFunction &MF,
DebugLoc dl = MBBI->getDebugLoc(); DebugLoc dl = MBBI->getDebugLoc();
uint64_t StackSize = MFI->getStackSize(); uint64_t StackSize = MFI->getStackSize();
StackSize += 16; // need to allocate space for RA. Clean this up later
// when we fix the save/restore instruction. TBD..
if (!StackSize) if (!StackSize)
return; return;