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Do NOT inline self recursive calls into other functions. This is causing the

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pool allocator no end of trouble, and doesn't make a lot of sense anyway.  This
does not solve the problem with mutually recursive functions, but they are much less common.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9828 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-11-09 05:05:36 +00:00
parent b045e14111
commit d77922f1a2
2 changed files with 10 additions and 1 deletions
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5
lib/Transforms/IPO/Inliner.cpp
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@ -64,10 +64,13 @@ bool Inliner::runOnSCC(const std::vector<CallGraphNode*> &SCC) {
if (isa<CallInst>(I) || isa<InvokeInst>(I)) {
CallSite CS = CallSite::get(I);
if (Function *Callee = CS.getCalledFunction())
if (!Callee->isExternal()) {
if (!Callee->isExternal() && !IsRecursiveFunction.count(Callee)) {
// Determine whether this is a function IN the SCC...
bool inSCC = SCCFunctions.count(Callee);
// Keep track of whether this is a directly recursive function.
if (Callee == F) IsRecursiveFunction.insert(F);
// If the policy determines that we should inline this function,
// try to do so...
int InlineCost = inSCC ? getRecursiveInlineCost(CS) :

6
lib/Transforms/IPO/Inliner.h
View File

@ -51,7 +51,13 @@ struct Inliner : public CallGraphSCCPass {
virtual int getRecursiveInlineCost(CallSite CS);
private:
// InlineThreshold - Cache the value here for easy access.
unsigned InlineThreshold;
// IsRecursiveFunction - This contains all functions which are directly
// recursive, which we do NOT want to inline into other functions.
std::set<Function*> IsRecursiveFunction;
bool performInlining(CallSite CS, std::set<Function*> &SCC);
};