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Lock invalidations of the call graph during COWArrayOpt.

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We already preserve the call graph, so we should not allow it to be
invalidated.

Swift SVN r27012
This commit is contained in:
Mark Lacey
2015-04-05 04:53:47 +00:00
parent fb87132f72
commit a57bfed2d1
1 changed files with 4 additions and 1 deletions
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5
lib/SILPasses/COWArrayOpt.cpp
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@@ -1757,7 +1757,8 @@ class SwiftArrayOptPass : public SILFunctionTransform {
DominanceAnalysis *DA = PM->getAnalysis<DominanceAnalysis>();
SILLoopAnalysis *LA = PM->getAnalysis<SILLoopAnalysis>();
SILLoopInfo *LI = LA->getLoopInfo(getFunction());
CallGraph *CG = PM->getAnalysis<CallGraphAnalysis>()->getCallGraphOrNull();
CallGraphAnalysis *CGA = PM->getAnalysis<CallGraphAnalysis>();
CallGraph *CG = CGA->getCallGraphOrNull();
bool HasChanged = false;
@@ -1804,7 +1805,9 @@ class SwiftArrayOptPass : public SILFunctionTransform {
if (HasChanged) {
// We preserve the dominator tree. Let's invalidate everything else.
DA->lockInvalidation();
CGA->lockInvalidation();
invalidateAnalysis(SILAnalysis::PreserveKind::Nothing);
CGA->unlockInvalidation();
DA->unlockInvalidation();
}
}