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Now that invoke of an intrinsic is possible (for the llvm.do.nothing intrinsic)

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teach the callgraph logic to not create callgraph edges to intrinsics for invoke
instructions; it already skips this for call instructions.  Fixes PR13903.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164707 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2012-09-26 17:16:01 +00:00
parent 696e06e453
commit 44401b7c80
2 changed files with 18 additions and 4 deletions
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9
lib/Analysis/IPA/CallGraph.cpp
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@ -141,12 +141,13 @@ private:
for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); for (BasicBlock::iterator II = BB->begin(), IE = BB->end();
II != IE; ++II) { II != IE; ++II) {
CallSite CS(cast<Value>(II)); CallSite CS(cast<Value>(II));
if (CS && !isa<IntrinsicInst>(II)) { if (CS) {
const Function *Callee = CS.getCalledFunction(); const Function *Callee = CS.getCalledFunction();
if (Callee) if (!Callee)
Node->addCalledFunction(CS, getOrInsertFunction(Callee)); // Indirect calls of intrinsics are not allowed so no need to check.
else
Node->addCalledFunction(CS, CallsExternalNode); Node->addCalledFunction(CS, CallsExternalNode);
else if (!Callee->isIntrinsic())
Node->addCalledFunction(CS, getOrInsertFunction(Callee));
} }
} }
} }

13
test/Analysis/CallGraph/do-nothing-intrinsic.ll Normal file
View File

@ -0,0 +1,13 @@
; RUN: opt < %s -basiccg
; PR13903
define void @main() {
invoke void @llvm.donothing()
to label %ret unwind label %unw
unw:
%tmp = landingpad i8 personality i8 0 cleanup
br label %ret
ret:
ret void
}
declare void @llvm.donothing() nounwind readnone