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Transfer regmasks to MRI.

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MRI keeps track of which physregs have been used. Make sure it gets
updated with all the regmask-clobbered registers.

Delete the closePhysRegsUsed() function which isn't necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150830 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-02-17 19:07:56 +00:00
parent dbe266be35
commit d9f0ff56a1
4 changed files with 29 additions and 21 deletions
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12
lib/CodeGen/MachineRegisterInfo.cpp
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@@ -22,7 +22,8 @@ MachineRegisterInfo::MachineRegisterInfo(const TargetRegisterInfo &TRI)
VRegInfo.reserve(256);
RegAllocHints.reserve(256);
UsedPhysRegs.resize(TRI.getNumRegs());
UsedPhysRegMask.resize(TRI.getNumRegs());
// Create the physreg use/def lists.
PhysRegUseDefLists = new MachineOperand*[TRI.getNumRegs()];
memset(PhysRegUseDefLists, 0, sizeof(MachineOperand*)*TRI.getNumRegs());
@@ -244,15 +245,6 @@ MachineRegisterInfo::EmitLiveInCopies(MachineBasicBlock *EntryMBB,
}
}
void MachineRegisterInfo::closePhysRegsUsed(const TargetRegisterInfo &TRI) {
for (int i = UsedPhysRegs.find_first(); i >= 0;
i = UsedPhysRegs.find_next(i))
for (const unsigned *SS = TRI.getSubRegisters(i);
unsigned SubReg = *SS; ++SS)
if (SubReg > unsigned(i))
UsedPhysRegs.set(SubReg);
}
#ifndef NDEBUG
void MachineRegisterInfo::dumpUses(unsigned Reg) const {
for (use_iterator I = use_begin(Reg), E = use_end(); I != E; ++I)