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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-17 19:07:56 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-17 19:07:56 +0000 |
| commit | a0cf42f2e1bc8534258f6a72e718e78214e00e9f (patch) | |
| tree | 32aae39a68b57c249e15f133aa442d26378310dc /llvm/lib/CodeGen/VirtRegMap.cpp | |
| parent | 0155f30a9c84c41e27f05141c08888d7b9e84da9 (diff) | |
| download | llvm-a0cf42f2e1bc8534258f6a72e718e78214e00e9f.zip llvm-a0cf42f2e1bc8534258f6a72e718e78214e00e9f.tar.gz llvm-a0cf42f2e1bc8534258f6a72e718e78214e00e9f.tar.bz2 | |
Transfer regmasks to MRI.
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.
llvm-svn: 150830
Diffstat (limited to 'llvm/lib/CodeGen/VirtRegMap.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/VirtRegMap.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/VirtRegMap.cpp b/llvm/lib/CodeGen/VirtRegMap.cpp index 5daa6a7..3bab93b 100644 --- a/llvm/lib/CodeGen/VirtRegMap.cpp +++ b/llvm/lib/CodeGen/VirtRegMap.cpp @@ -127,6 +127,11 @@ void VirtRegMap::rewrite(SlotIndexes *Indexes) { for (MachineInstr::mop_iterator MOI = MI->operands_begin(), MOE = MI->operands_end(); MOI != MOE; ++MOI) { MachineOperand &MO = *MOI; + + // Make sure MRI knows about registers clobbered by regmasks. + if (MO.isRegMask()) + MRI->addPhysRegsUsedFromRegMask(MO.getRegMask()); + if (!MO.isReg() || !TargetRegisterInfo::isVirtualRegister(MO.getReg())) continue; unsigned VirtReg = MO.getReg(); |