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; Test CFG simplify removal of branch instructions.
;
; RUN: opt < %s -simplifycfg -S | FileCheck %s
define void @test1() {
br label %BB1
BB1: ; preds = %0
ret void
; CHECK: @test1
; CHECK-NEXT: ret void
}
define void @test2() {
ret void
BB1: ; No predecessors!
ret void
; CHECK: @test2
; CHECK-NEXT: ret void
; CHECK-NEXT: }
}
define void @test3(i1 %T) {
br i1 %T, label %BB1, label %BB1
BB1: ; preds = %0, %0
ret void
; CHECK: @test3
; CHECK-NEXT: ret void
}
define void @test4() {
br label %return
return:
ret void
; CHECK: @test4
; CHECK-NEXT: ret void
}
@test4g = global i8* blockaddress(@test4, %return)
; PR5795
define void @test5(i32 %A) {
switch i32 %A, label %return [
i32 2, label %bb
i32 10, label %bb1
]
bb: ; preds = %entry
ret void
bb1: ; preds = %entry
ret void
return: ; preds = %entry
ret void
; CHECK: @test5
; CHECK-NEXT: bb:
; CHECK-NEXT: ret void
}
|
