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a05b979e48
Summary: This is a fix of D13718. D13718 was committed but then reverted because of the following bug: https://llvm.org/bugs/show_bug.cgi?id=25299 This patch fixes the issue shown in the bug. Reviewers: majnemer, reames Subscribers: jevinskie, llvm-commits Differential Revision: http://reviews.llvm.org/D14308 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257277 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.0 KiB
LLVM
76 lines
2.0 KiB
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() personality i32 (...)* @__gxx_personality_v0 {
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; CHECK-LABEL: @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 %1 unwind label %Rethrow
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ret i32 0
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Rethrow:
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%exn = landingpad {i8*, i32}
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catch i8* null
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resume { i8*, i32 } %exn
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}
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define i32 @test2() personality i32 (...)* @__gxx_personality_v0 {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: call void @bar() [ "foo"(i32 100) ]
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; CHECK-NEXT: ret i32 0
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invoke void @bar( ) [ "foo"(i32 100) ]
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to label %1 unwind label %Rethrow
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ret i32 0
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Rethrow:
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%exn = landingpad {i8*, i32}
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catch i8* null
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resume { i8*, i32 } %exn
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}
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declare i64 @dummy1()
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declare i64 @dummy2()
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; This testcase checks to see if simplifycfg pass can convert two invoke
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; instructions to call instructions if they share a common trivial unwind
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; block.
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define i64 @test3(i1 %cond) personality i32 (...)* @__gxx_personality_v0 {
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entry:
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; CHECK-LABEL: @test3(
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; CHECK: %call1 = call i64 @dummy1()
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; CHECK: %call2 = call i64 @dummy2()
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; CHECK-NOT: resume { i8*, i32 } %lp
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br i1 %cond, label %br1, label %br2
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br1:
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%call1 = invoke i64 @dummy1()
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to label %invoke.cont unwind label %lpad1
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br2:
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%call2 = invoke i64 @dummy2()
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to label %invoke.cont unwind label %lpad2
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invoke.cont:
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%c = phi i64 [%call1, %br1], [%call2, %br2]
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ret i64 %c
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lpad1:
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%0 = landingpad { i8*, i32 }
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cleanup
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br label %rethrow
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rethrow:
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%lp = phi { i8*, i32 } [%0, %lpad1], [%1, %lpad2]
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resume { i8*, i32 } %lp
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lpad2:
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%1 = landingpad { i8*, i32 }
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cleanup
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br label %rethrow
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}
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declare i32 @__gxx_personality_v0(...)
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