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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; Make sure we don't end up in an infinite recursion in singleReachablePHIPath().
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
@c = external global i64, align 8
define void @tinkywinky() {
; CHECK-LABEL: define void @tinkywinky() {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 undef, label [[L2:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: ph:
; CHECK-NEXT: br label [[FOR_BODY]]
; CHECK: for.body:
; CHECK-NEXT: br i1 undef, label [[ONTRUE:%.*]], label [[ONFALSE:%.*]]
; CHECK: onfalse:
; CHECK-NEXT: [[PATATINO:%.*]] = load i64, ptr @c, align 4
; CHECK-NEXT: ret void
; CHECK: ontrue:
; CHECK-NEXT: [[DIPSY:%.*]] = load i64, ptr @c, align 4
; CHECK-NEXT: br label [[PH:%.*]]
; CHECK: back:
; CHECK-NEXT: store i8 poison, ptr null, align 1
; CHECK-NEXT: br label [[PH]]
; CHECK: end:
; CHECK-NEXT: ret void
; CHECK: l2:
; CHECK-NEXT: br i1 false, label [[BACK:%.*]], label [[END:%.*]]
;
entry:
br i1 undef, label %l2, label %if.then
if.then:
br label %for.body
ph:
br label %for.body
for.body:
br i1 undef, label %ontrue, label %onfalse
onfalse:
%patatino = load i64, ptr @c
store i64 %patatino, ptr @c
ret void
ontrue:
%dipsy = load i64, ptr @c
store i64 %dipsy, ptr @c
br label %ph
back:
br label %ph
end:
ret void
l2:
br i1 false, label %back, label %end
}
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