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Try to keep the cached inliner costs around for a bit longer for big functions.

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The Caller cost info would be reset everytime a callee was inlined. If the
caller has lots of calls and there is some mutual recursion going on, the
caller cost info could be calculated many times.

This patch reduces inliner runtime from 240s to 0.5s for a function with 20000
small function calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98089 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-03-09 22:17:11 +00:00
parent 74a684222d
commit 9e5d87d568
6 changed files with 57 additions and 6 deletions
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3
lib/Transforms/IPO/InlineSimple.cpp
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@ -45,6 +45,9 @@ namespace {
void resetCachedCostInfo(Function *Caller) {
CA.resetCachedCostInfo(Caller);
}
void growCachedCostInfo(Function* Caller, Function* Callee) {
CA.growCachedCostInfo(Caller, Callee);
}
virtual bool doInitialization(CallGraph &CG);
};
}