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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-12-23 21:28:42 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-12-23 21:28:42 +0000 |
| commit | 1342a3e9465505305d72800dcb2479d35ccfe3b5 (patch) | |
| tree | b24eb5987cd68ff932173db3b912bd67b232333e | |
| parent | cad17d74d47071cbcc4c8e0797b08a0abb7e1c83 (diff) | |
| download | external_llvm-1342a3e9465505305d72800dcb2479d35ccfe3b5.zip external_llvm-1342a3e9465505305d72800dcb2479d35ccfe3b5.tar.gz external_llvm-1342a3e9465505305d72800dcb2479d35ccfe3b5.tar.bz2 | |
Handle undef operands properly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92054 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index c47a7bf..755f0a0 100644 --- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -316,13 +316,17 @@ ARMLoadStoreOpt::MergeLDR_STR(MachineBasicBlock &MBB, unsigned SIndex, unsigned insertAfter = SIndex; MachineBasicBlock::iterator Loc = MemOps[SIndex].MBBI; DebugLoc dl = Loc->getDebugLoc(); - unsigned PReg = Loc->getOperand(0).getReg(); - unsigned PRegNum = ARMRegisterInfo::getRegisterNumbering(PReg); + const MachineOperand &PMO = Loc->getOperand(0); + unsigned PReg = PMO.getReg(); + unsigned PRegNum = PMO.isUndef() ? UINT_MAX + : ARMRegisterInfo::getRegisterNumbering(PReg); for (unsigned i = SIndex+1, e = MemOps.size(); i != e; ++i) { int NewOffset = MemOps[i].Offset; - unsigned Reg = MemOps[i].MBBI->getOperand(0).getReg(); - unsigned RegNum = ARMRegisterInfo::getRegisterNumbering(Reg); + const MachineOperand &MO = MemOps[i].MBBI->getOperand(0); + unsigned Reg = MO.getReg(); + unsigned RegNum = MO.isUndef() ? UINT_MAX + : ARMRegisterInfo::getRegisterNumbering(Reg); // AM4 - register numbers in ascending order. // AM5 - consecutive register numbers in ascending order. if (NewOffset == Offset + (int)Size && |