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[SystemZ] Use CLST to implement strcmp

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188544 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford
2013-08-16 11:21:54 +00:00
parent 6a079fef4f
commit e1b2af731e
15 changed files with 347 additions and 11 deletions
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2
include/llvm/Target/TargetLibraryInfo.h
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@@ -699,7 +699,7 @@ public:
case LibFunc::trunc: case LibFunc::truncf: case LibFunc::truncl:
case LibFunc::log2: case LibFunc::log2f: case LibFunc::log2l:
case LibFunc::exp2: case LibFunc::exp2f: case LibFunc::exp2l:
case LibFunc::memcmp:
case LibFunc::memcmp: case LibFunc::strcmp:
return true;
}
return false;

14
include/llvm/Target/TargetSelectionDAGInfo.h
View File

@@ -108,6 +108,20 @@ public:
MachinePointerInfo Op2PtrInfo) const {
return std::make_pair(SDValue(), SDValue());
}
/// EmitTargetCodeForStrcmp - Emit target-specific code that performs a
/// strcmp, in cases where that is faster than a libcall. The first
/// returned SDValue is the result of the strcmp and the second is
/// the chain. Both SDValues can be null if a normal libcall should
/// be used.
virtual std::pair<SDValue, SDValue>
EmitTargetCodeForStrcmp(SelectionDAG &DAG, SDLoc dl,
SDValue Chain,
SDValue Op1, SDValue Op2,
MachinePointerInfo Op1PtrInfo,
MachinePointerInfo Op2PtrInfo) const {
return std::make_pair(SDValue(), SDValue());
}
};
} // end llvm namespace