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Intrinsics don't read these kinds of global

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variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56105 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-09-11 15:43:12 +00:00
parent dd595c5998
commit 1abe60b9be
1 changed files with 7 additions and 5 deletions
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12
lib/Analysis/IPA/GlobalsModRef.cpp
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@ -384,11 +384,13 @@ void GlobalsModRef::AnalyzeCallGraph(CallGraph &CG, Module &M) {
// Can't do better than that!
} else if (F->onlyReadsMemory()) {
FunctionEffect |= Ref;
// This function might call back into the module and read a global, so
// mark all globals read somewhere as being read by this function.
for (std::set<GlobalValue*>::iterator GI = ReadGlobals.begin(),
E = ReadGlobals.end(); GI != E; ++GI)
FR.GlobalInfo[*GI] |= Ref;
if (!F->isIntrinsic()) {
// This function might call back into the module and read a global -
// mark all globals read somewhere as being read by this function.
for (std::set<GlobalValue*>::iterator GI = ReadGlobals.begin(),
E = ReadGlobals.end(); GI != E; ++GI)
FR.GlobalInfo[*GI] |= Ref;
}
} else {
// Can't say anything useful.
KnowNothing = true;