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Implement a new method: CloneAndPruneFunctionInto, as documented.

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llvm-svn: 28518
This commit is contained in:
Chris Lattner 2006-05-27 01:21:50 +00:00
parent 1835cfb302
commit fcb019fcb6
1 changed files with 13 additions and 0 deletions
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13
include/llvm/Transforms/Utils/Cloning.h
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@ -130,6 +130,19 @@ void CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
const char *NameSuffix = "",
ClonedCodeInfo *CodeInfo = 0);
/// CloneAndPruneFunctionInto - This works exactly like CloneFunctionInto,
/// except that it does some simple constant prop and DCE on the fly. The
/// effect of this is to copy significantly less code in cases where (for
/// example) a function call with constant arguments is inlined, and those
/// constant arguments cause a significant amount of code in the callee to be
/// dead. Since this doesn't produce an exactly copy of the input, it can't be
/// used for things like CloneFunction or CloneModule.
void CloneAndPruneFunctionInto(Function *NewFunc, const Function *OldFunc,
std::map<const Value*, Value*> &ValueMap,
std::vector<ReturnInst*> &Returns,
const char *NameSuffix = "",
ClonedCodeInfo *CodeInfo = 0);
/// CloneTraceInto - Clone T into NewFunc. Original<->clone mapping is
/// saved in ValueMap.