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Teach the inliner not to invalidate all the analysis if no change was made.

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Swift SVN r13581
This commit is contained in:
Nadav Rotem
2014-02-06 17:34:19 +00:00
parent abed15c3c3
commit 4529a4296a
1 changed files with 11 additions and 5 deletions
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16
lib/SILPasses/PerformanceInliner.cpp
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@@ -37,7 +37,7 @@ namespace {
explicit SILPerformanceInliner(unsigned threshold)
: InlineCostThreshold(threshold) {}
void inlineCallsIntoFunction(SILFunction *F);
bool inlineCallsIntoFunction(SILFunction *F);
};
}
@@ -297,8 +297,10 @@ unsigned SILPerformanceInliner::getFunctionCost(SILFunction *F,
// Inliner
//===----------------------------------------------------------------------===//
/// Attempt to inline all calls smaller than our threshold into F until.
void SILPerformanceInliner::inlineCallsIntoFunction(SILFunction *Caller) {
/// \brief Attempt to inline all calls smaller than our threshold into F until.
/// returns True if a function was inlined.
bool SILPerformanceInliner::inlineCallsIntoFunction(SILFunction *Caller) {
bool Changed = false;
SILInliner Inliner(*Caller, SILInliner::InlineKind::PerformanceInline);
DEBUG(llvm::dbgs() << "Visiting Function: " << Caller->getName() << "\n");
@@ -356,7 +358,9 @@ void SILPerformanceInliner::inlineCallsIntoFunction(SILFunction *Caller) {
// our next invocation of the inliner.
Inliner.inlineFunction(AI, Callee, ArrayRef<Substitution>(), Args);
NumFunctionsInlined++;
Changed = true;
}
return Changed;
}
class SILPerformanceInlinerPass : public SILModuleTransform {
@@ -381,14 +385,16 @@ public:
SILPerformanceInliner inliner(Threshold);
bool Changed = false;
while (!Worklist.empty()) {
SILFunction *F = Worklist.back();
Worklist.pop_back();
inliner.inlineCallsIntoFunction(F);
Changed |= inliner.inlineCallsIntoFunction(F);
}
// Invalidate the call graph.
CGA->invalidate(SILAnalysis::InvalidationKind::CallGraph);
if (Changed)
CGA->invalidate(SILAnalysis::InvalidationKind::CallGraph);
}
};