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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s
define void @callbr_duplicate_dest() {
; CHECK-LABEL: @callbr_duplicate_dest(
; CHECK-NEXT: entry:
; CHECK-NEXT: callbr void asm sideeffect "", "!i"()
; CHECK-NEXT: to label [[BB:%.*]] [label %bb]
; CHECK: bb:
; CHECK-NEXT: ret void
;
entry:
callbr void asm sideeffect "", "!i"()
to label %bb [label %bb]
bb:
ret void
}
; TODO: Can fold to a duplicate callbr destination.
define void @callbr_can_fold_to_duplicate_dest1() {
; CHECK-LABEL: @callbr_can_fold_to_duplicate_dest1(
; CHECK-NEXT: entry:
; CHECK-NEXT: callbr void asm sideeffect "", "!i"()
; CHECK-NEXT: to label [[BB2:%.*]] [label %common.ret]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
;
entry:
callbr void asm sideeffect "", "!i"()
to label %bb2 [label %bb1]
bb1:
ret void
bb2:
ret void
}
; TODO: Can fold to a duplicate callbr destination.
define void @callbr_can_fold_to_duplicate_dest2() {
; CHECK-LABEL: @callbr_can_fold_to_duplicate_dest2(
; CHECK-NEXT: entry:
; CHECK-NEXT: callbr void asm sideeffect "", "!i,!i"()
; CHECK-NEXT: to label [[COMMON_RET:%.*]] [label [[BB2:%.*]], label %bb3]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: bb3:
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
callbr void asm sideeffect "", "!i,!i"()
to label %bb1 [label %bb2, label %bb3]
bb1:
ret void
bb2:
ret void
bb3:
ret void
}
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