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[inliner] Fix PR18206 by preventing inlining functions that call setjmp

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through an invoke instruction.

The original patch for this was written by Mark Seaborn, but I've
reworked his test case into the existing returns_twice test case and
implemented the fix by the prior refactoring to actually run the cost
analysis over invoke instructions, and then here fixing our detection of
the returns_twice attribute to work for both calls and invokes. We never
noticed because we never saw an invoke. =[

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197216 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2013-12-13 08:00:01 +00:00
parent 0bdc7cd5de
commit a7e2ef7e6e
2 changed files with 58 additions and 15 deletions
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2
lib/Analysis/IPA/InlineCost.cpp
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@@ -713,7 +713,7 @@ bool CallAnalyzer::simplifyCallSite(Function *F, CallSite CS) {
}
bool CallAnalyzer::visitCallSite(CallSite CS) {
if (CS.isCall() && cast<CallInst>(CS.getInstruction())->canReturnTwice() &&
if (CS.hasFnAttr(Attribute::ReturnsTwice) &&
!F.getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::ReturnsTwice)) {
// This aborts the entire analysis.