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[sil-devirtualizer] Do not perform a speculative devirtualization for no-opt callees.

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This commit is contained in:
Roman Levenstein
2016-05-11 12:50:18 -07:00
parent 28f7b09c1d
commit 73b6a38edc
4 changed files with 142 additions and 5 deletions
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9
lib/SILOptimizer/Transforms/SpeculativeDevirtualizer.cpp
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@@ -409,6 +409,15 @@ static bool tryToSpeculateTarget(FullApplySite AI,
// Try to devirtualize the static class of instance
// if it is possible.
if (auto F = getTargetClassMethod(M, SubType, CMI)) {
// Do not devirtualize if a method in the base class is marked
// as non-optimizable. This way it is easy to disable the
// devirtualization of this method in the base class and
// any classes derived from it.
if (!F->shouldOptimize())
return false;
}
auto FirstAI = speculateMonomorphicTarget(AI, SubType, LastCCBI);
if (FirstAI) {
Changed = true;