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Added function IsLeafMethod to identify leaf methods.

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This will use the CallGraph only if one is provided.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@950 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2001-10-22 13:55:46 +00:00
parent ac0ec47957
commit a7edb1888c
2 changed files with 37 additions and 0 deletions
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14
include/llvm/Analysis/CallGraph.h
View File

@ -89,4 +89,18 @@ private: // Implementation of CallGraph construction
} // end namespace cfg } // end namespace cfg
//******************* Externally Visible Functions *************************/
// Checks if a method contains any call instructions.
// Note that this uses the call graph only if one is provided.
// It does not build the call graph.
//
bool IsLeafMethod (const Method* method,
const cfg::CallGraph* callGraph = NULL);
//**************************************************************************/
#endif #endif

23
lib/Analysis/IPA/CallGraph.cpp
View File

@ -70,3 +70,26 @@ void cfg::WriteToOutput(const CallGraph &CG, ostream &o) {
for (CallGraph::const_iterator I = CG.begin(), E = CG.end(); I != E; ++I) for (CallGraph::const_iterator I = CG.begin(), E = CG.end(); I != E; ++I)
o << I->second; o << I->second;
} }
//
// Checks if a method contains any call instructions.
// Note that this uses the call graph only if one is provided.
// It does not build the call graph.
//
bool IsLeafMethod(const Method* M, const cfg::CallGraph* CG) {
if (CG) {
const cfg::CallGraphNode *cgn = (*CG)[M];
return (cgn->begin() == cgn->end());
}
else {
for (Method::inst_const_iterator I = M->inst_begin(), E = M->inst_end();
I != E; ++I)
if ((*I)->getOpcode() == Instruction::Call)
return false;
return true;
}
}