- 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
diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
index 8fb3f92..741acde 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.h
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -81,6 +81,10 @@
virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID);
+ /// hasSameValue - Return true if this ARM constpool value
+ /// can share the same constantpool entry as another ARM constpool value.
+ bool hasSameValue(ARMConstantPoolValue *ACPV);
+
void print(raw_ostream *O) const { if (O) print(*O); }
void print(raw_ostream &O) const;
void dump() const;