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Always assume a function may have calls because the printer may add `bl' to get

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the PC in a code sequence for global variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14506 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-06-30 00:09:12 +00:00
parent 14d8c7a6a0
commit ce76db9083
1 changed files with 8 additions and 2 deletions
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10
lib/Target/PowerPC/PowerPCRegisterInfo.cpp
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@ -187,7 +187,10 @@ void PowerPCRegisterInfo::emitPrologue(MachineFunction &MF) const {
// Get the number of bytes to allocate from the FrameInfo // Get the number of bytes to allocate from the FrameInfo
unsigned NumBytes = MFI->getStackSize(); unsigned NumBytes = MFI->getStackSize();
if (MFI->hasCalls()) { // FIXME: the assembly printer inserts "calls" aka branch-and-link to get the
// PC address. We may not know about those calls at this time, so be
// conservative.
if (MFI->hasCalls() || true) {
// When we have no frame pointer, we reserve argument space for call sites // When we have no frame pointer, we reserve argument space for call sites
// in the function immediately on entry to the current function. This // in the function immediately on entry to the current function. This
// eliminates the need for add/sub brackets around call sites. // eliminates the need for add/sub brackets around call sites.
@ -235,7 +238,10 @@ void PowerPCRegisterInfo::emitEpilogue(MachineFunction &MF,
MBB.insert(MBBI, MI); MBB.insert(MBBI, MI);
// If we have calls, restore the LR value before we branch to it // If we have calls, restore the LR value before we branch to it
if (MFI->hasCalls()) { // FIXME: the assembly printer inserts "calls" aka branch-and-link to get the
// PC address. We may not know about those calls at this time, so be
// conservative.
if (MFI->hasCalls() || true) {
// Read old LR from stack into R0 // Read old LR from stack into R0
MI = BuildMI(PPC32::LWZ, 2, PPC32::R0).addSImm(8).addReg(PPC32::R1); MI = BuildMI(PPC32::LWZ, 2, PPC32::R0).addSImm(8).addReg(PPC32::R1);
MBB.insert(MBBI, MI); MBB.insert(MBBI, MI);