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Do now allow InlineAlways pass to remove dead functions.

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llvm-svn: 58744
This commit is contained in:
Devang Patel 2008-11-05 01:39:16 +00:00
parent b55a78e553
commit de9b95965a
3 changed files with 17 additions and 0 deletions
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4
include/llvm/Transforms/IPO/InlinerPass.h
View File

@ -61,6 +61,10 @@ struct Inliner : public CallGraphSCCPass {
///
virtual float getInlineFudgeFactor(CallSite CS) = 0;
/// removeDeadFunctions - Remove dead functions that are not included in
/// DNR (Do Not Remove) list.
bool removeDeadFunctions(CallGraph &CG,
SmallPtrSet<const Function *, 16> *DNR = NULL);
private:
// InlineThreshold - Cache the value here for easy access.
unsigned InlineThreshold;

3
lib/Transforms/IPO/InlineAlways.cpp
View File

@ -45,6 +45,9 @@ namespace {
float getInlineFudgeFactor(CallSite CS) {
return CA.getInlineFudgeFactor(CS);
}
virtual bool doFinalization(CallGraph &CG) {
return removeDeadFunctions(CG, &NeverInline);
}
virtual bool doInitialization(CallGraph &CG);
};
}

10
lib/Transforms/IPO/Inliner.cpp
View File

@ -204,6 +204,13 @@ bool Inliner::runOnSCC(const std::vector<CallGraphNode*> &SCC) {
// doFinalization - Remove now-dead linkonce functions at the end of
// processing to avoid breaking the SCC traversal.
bool Inliner::doFinalization(CallGraph &CG) {
return removeDeadFunctions(CG);
}
/// removeDeadFunctions - Remove dead functions that are not included in
/// DNR (Do Not Remove) list.
bool Inliner::removeDeadFunctions(CallGraph &CG,
SmallPtrSet<const Function *, 16> *DNR) {
std::set<CallGraphNode*> FunctionsToRemove;
// Scan for all of the functions, looking for ones that should now be removed
@ -215,6 +222,9 @@ bool Inliner::doFinalization(CallGraph &CG) {
// them.
F->removeDeadConstantUsers();
if (DNR && DNR->count(F))
continue;
if ((F->hasLinkOnceLinkage() || F->hasInternalLinkage()) &&
F->use_empty()) {