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067f270fea
CatchReturnInst has side-effects: it runs a destructor. This destructor could conceivably run forever/call exit/etc. and should not be removed. llvm-svn: 251461
109 lines
2.6 KiB
LLVM
109 lines
2.6 KiB
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
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declare void @Personality()
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declare void @f()
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; CHECK-LABEL: define void @test1()
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define void @test1() personality i8* bitcast (void ()* @Personality to i8*) {
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entry:
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; CHECK: call void @f()
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invoke void @f()
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to label %exit unwind label %unreachable.unwind
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exit:
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ret void
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unreachable.unwind:
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cleanuppad []
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unreachable
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}
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; CHECK-LABEL: define void @test2()
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define void @test2() personality i8* bitcast (void ()* @Personality to i8*) {
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entry:
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invoke void @f()
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to label %exit unwind label %catch.pad
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catch.pad:
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; CHECK: catchpad []
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; CHECK-NEXT: to label %catch.body unwind label %catch.end
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%catch = catchpad []
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to label %catch.body unwind label %catch.end
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catch.body:
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; CHECK: catch.body:
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; CHECK-NEXT: call void @f()
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; CHECK-NEXT: unreachable
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call void @f()
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catchret %catch to label %unreachable
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catch.end:
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; CHECK: catch.end:
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; CHECK-NEXT: catchendpad unwind to caller
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catchendpad unwind label %unreachable.unwind
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exit:
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ret void
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unreachable.unwind:
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cleanuppad []
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unreachable
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unreachable:
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unreachable
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}
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; CHECK-LABEL: define void @test3()
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define void @test3() personality i8* bitcast (void ()* @Personality to i8*) {
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entry:
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invoke void @f()
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to label %exit unwind label %cleanup.pad
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cleanup.pad:
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; CHECK: %cleanup = cleanuppad []
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; CHECK-NEXT: call void @f()
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; CHECK-NEXT: unreachable
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%cleanup = cleanuppad []
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invoke void @f()
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to label %cleanup.ret unwind label %cleanup.end
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cleanup.ret:
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; This cleanupret should be rewritten to unreachable,
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; and merged into the pred block.
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cleanupret %cleanup unwind label %unreachable.unwind
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cleanup.end:
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; This cleanupendpad should be rewritten to unreachable,
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; causing the invoke to be rewritten to a call.
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cleanupendpad %cleanup unwind label %unreachable.unwind
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exit:
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ret void
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unreachable.unwind:
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cleanuppad []
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unreachable
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}
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; CHECK-LABEL: define void @test4()
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define void @test4() personality i8* bitcast (void ()* @Personality to i8*) {
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entry:
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invoke void @f()
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to label %exit unwind label %terminate.pad
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terminate.pad:
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; CHECK: terminatepad [] unwind to caller
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terminatepad [] unwind label %unreachable.unwind
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exit:
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ret void
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unreachable.unwind:
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cleanuppad []
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unreachable
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}
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; CHECK-LABEL: define void @test5()
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define void @test5() personality i8* bitcast (void ()* @Personality to i8*) {
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entry:
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invoke void @f()
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to label %exit unwind label %catch.pad
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catch.pad:
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%catch = catchpad []
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to label %catch.body unwind label %catch.end
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catch.body:
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catchret %catch to label %exit
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catch.end:
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catchendpad unwind to caller
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exit:
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unreachable
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}
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