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Clarify meaning of copyRegToReg's return value.
author
Evan Cheng
<evan.cheng@apple.com>
Mon, 13 Oct 2008 17:30:56 +0000
(17:30 +0000)
committer
Evan Cheng
<evan.cheng@apple.com>
Mon, 13 Oct 2008 17:30:56 +0000
(17:30 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57449
91177308
-0d34-0410-b5e6-
96231b3b80d8
include/llvm/Target/TargetInstrInfo.h
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diff --git
a/include/llvm/Target/TargetInstrInfo.h
b/include/llvm/Target/TargetInstrInfo.h
index
fcd0016
..
510da1a
100644
(file)
--- a/
include/llvm/Target/TargetInstrInfo.h
+++ b/
include/llvm/Target/TargetInstrInfo.h
@@
-220,7
+220,9
@@
public:
return 0;
}
- /// copyRegToReg - Add a copy between a pair of registers
+ /// copyRegToReg - Emit instructions to copy between a pair of registers. It
+ /// returns false if the target does not how to copy between the specified
+ /// registers.
virtual bool copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, unsigned SrcReg,