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[WinEH] Improve fatal error message about failed demotion
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236626 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1732,7 +1732,12 @@ Value *WinEHFrameVariableMaterializer::materializeValueFor(Value *V) {
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}
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if (isa<Instruction>(V) || isa<Argument>(V)) {
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errs() << "Failed to demote instruction used in exception handler:\n";
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Function *Parent = isa<Instruction>(V)
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? cast<Instruction>(V)->getParent()->getParent()
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: cast<Argument>(V)->getParent();
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errs()
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<< "Failed to demote instruction used in exception handler of function "
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<< GlobalValue::getRealLinkageName(Parent->getName()) << ":\n";
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errs() << " " << *V << '\n';
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report_fatal_error("WinEHPrepare failed to demote instruction");
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}
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