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Now that the X86 Maximal Stack Alignment Check pass has been removed (i.e.,

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r168627), we no longer need to call the freezeReservedRegs() function a second
time.  Previously, this pass was conservatively adding the FP to the set of
reserved registers, requiring the second update to the reserved registers.
rdar://12719844

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168631 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2012-11-26 23:25:41 +00:00
parent 216532ac0a
commit 728aede2e9
2 changed files with 0 additions and 3 deletions
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1
lib/CodeGen/RegAllocFast.cpp
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@ -1127,7 +1127,6 @@ bool RAFast::runOnMachineFunction(MachineFunction &Fn) {
TM = &Fn.getTarget();
TRI = TM->getRegisterInfo();
TII = TM->getInstrInfo();
MRI->freezeReservedRegs(Fn);
RegClassInfo.runOnMachineFunction(Fn);
UsedInInstr.clear();
UsedInInstr.setUniverse(TRI->getNumRegs());

2
lib/CodeGen/RegAllocPBQP.cpp
View File

@ -552,8 +552,6 @@ bool RegAllocPBQP::runOnMachineFunction(MachineFunction &MF) {
vrm = &getAnalysis<VirtRegMap>();
spiller.reset(createInlineSpiller(*this, MF, *vrm));
mri->freezeReservedRegs(MF);
DEBUG(dbgs() << "PBQP Register Allocating for " << mf->getName() << "\n");
// Allocator main loop: