Evan Cheng 78e5c1140a - Add TargetInstrInfo::isIdentical(). It's similar to MachineInstr::isIdentical ...

except it doesn't care if the definitions' virtual registers differ. This is
  used by machine LICM and other MI passes to perform CSE.
- Teach Thumb2InstrInfo::isIdentical() to check two t2LDRpci_pic are identical.
  Since pc relative constantpool entries are always different, this requires it
  it check if the values can actually the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86328 91177308-0d34-0410-b5e6-96231b3b80d8

2009-11-07 03:52:02 +00:00

3.5 KiB

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