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author | Evan Cheng <evan.cheng@apple.com> | 2009-11-07 03:52:02 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2009-11-07 03:52:02 +0000 |
commit | 78e5c1140adc926e7c004748c1c912bfddd875b4 (patch) | |
tree | 6b41a4349a4ab4fdd379d1f6f7c007388e9a1475 /lib/Target/ARM/ARMConstantPoolValue.h | |
parent | b6aae88ac003183cd386c7db2ce123b4d10b7a22 (diff) | |
download | llvm-78e5c1140adc926e7c004748c1c912bfddd875b4.tar.gz llvm-78e5c1140adc926e7c004748c1c912bfddd875b4.tar.bz2 llvm-78e5c1140adc926e7c004748c1c912bfddd875b4.tar.xz |
- 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
Diffstat (limited to 'lib/Target/ARM/ARMConstantPoolValue.h')
-rw-r--r-- | lib/Target/ARM/ARMConstantPoolValue.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h index 8fb3f9245e..741acde27b 100644 --- a/lib/Target/ARM/ARMConstantPoolValue.h +++ b/lib/Target/ARM/ARMConstantPoolValue.h @@ -81,6 +81,10 @@ public: 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; |