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this will increase the likelihood of common code getting sunk towards the unwind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83996 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
822 B
LLVM
34 lines
822 B
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
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declare void @bar()
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; This testcase checks to see if the simplifycfg pass is converting invoke
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; instructions to call instructions if the handler just rethrows the exception.
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define i32 @test1() {
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; CHECK: @test1
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; CHECK-NEXT: call void @bar()
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; CHECK-NEXT: ret i32 0
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invoke void @bar( )
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to label %Ok unwind label %Rethrow
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Ok: ; preds = %0
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ret i32 0
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Rethrow: ; preds = %0
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unwind
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}
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; Verify that simplifycfg isn't duplicating 'unwind' instructions. Doing this
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; is bad because it discourages commoning.
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define i32 @test2(i1 %c) {
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; CHECK: @test2
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; CHECK: T:
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; CHECK-NEXT: call void @bar()
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; CHECK-NEXT: br label %F
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br i1 %c, label %T, label %F
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T:
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call void @bar()
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br label %F
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F:
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unwind
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}
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