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The lower invoke pass needs to have unreachable code elimination run after it
because it could create such things. This fixes a MingW buildbot test failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110279 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -288,13 +288,15 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
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// pad is shared by multiple invokes and is also a target of a normal
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// edge from elsewhere.
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PM.add(createSjLjEHPass(getTargetLowering()));
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PM.add(createDwarfEHPass(this, OptLevel==CodeGenOpt::None));
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break;
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// FALLTHROUGH
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case ExceptionHandling::Dwarf:
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PM.add(createDwarfEHPass(this, OptLevel==CodeGenOpt::None));
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break;
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case ExceptionHandling::None:
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PM.add(createLowerInvokePass(getTargetLowering()));
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// The lower invoke pass may create unreachable code. Remove it.
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PM.add(createUnreachableBlockEliminationPass());
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break;
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}
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39
test/CodeGen/X86/2010-08-04-MingWCrash.ll
Normal file
39
test/CodeGen/X86/2010-08-04-MingWCrash.ll
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@ -0,0 +1,39 @@
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; RUN: llc < %s -mtriple=i386-pc-mingw32
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define void @func() nounwind {
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invoke.cont:
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%call = tail call i8* @malloc()
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%a = invoke i32 @bar()
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to label %bb1 unwind label %lpad
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bb1:
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ret void
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lpad:
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%exn = tail call i8* @llvm.eh.exception() nounwind
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%eh.selector = tail call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 1, i8* null) nounwind
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%ehspec.fails = icmp slt i32 %eh.selector, 0
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br i1 %ehspec.fails, label %ehspec.unexpected, label %cleanup
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cleanup:
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tail call void @_Unwind_Resume_or_Rethrow(i8* %exn) noreturn nounwind
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unreachable
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ehspec.unexpected:
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tail call void @__cxa_call_unexpected(i8* %exn) noreturn nounwind
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unreachable
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}
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declare noalias i8* @malloc()
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declare i8* @llvm.eh.exception() nounwind readonly
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declare i32 @__gxx_personality_v0(...)
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declare i32 @llvm.eh.selector(i8*, i8*, ...) nounwind
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declare void @_Unwind_Resume_or_Rethrow(i8*)
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declare void @__cxa_call_unexpected(i8*)
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declare i32 @bar()
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