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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree < %s | FileCheck %s
declare void @foo(i32)
define void @br_undef_simple() {
; CHECK-LABEL: @br_undef_simple(
; CHECK-NEXT: call void @foo(i32 0)
; CHECK-NEXT: br i1 undef, label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: if:
; CHECK-NEXT: call void @foo(i32 1)
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @foo(i32 2)
; CHECK-NEXT: br label [[COMMON_RET]]
;
call void @foo(i32 0)
br i1 undef, label %if, label %else
if:
call void @foo(i32 1)
ret void
else:
call void @foo(i32 2)
ret void
}
define void @br_poison_simple() {
; CHECK-LABEL: @br_poison_simple(
; CHECK-NEXT: call void @foo(i32 0)
; CHECK-NEXT: br i1 poison, label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: if:
; CHECK-NEXT: call void @foo(i32 1)
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @foo(i32 2)
; CHECK-NEXT: br label [[COMMON_RET]]
;
call void @foo(i32 0)
br i1 poison, label %if, label %else
if:
call void @foo(i32 1)
ret void
else:
call void @foo(i32 2)
ret void
}
define void @br_poison_succs_used(i32 %v) {
; CHECK-LABEL: @br_poison_succs_used(
; CHECK-NEXT: entry:
; CHECK-NEXT: switch i32 [[V:%.*]], label [[BR:%.*]] [
; CHECK-NEXT: i32 1, label [[IF:%.*]]
; CHECK-NEXT: i32 2, label [[ELSE:%.*]]
; CHECK-NEXT: ]
; CHECK: br:
; CHECK-NEXT: call void @foo(i32 0)
; CHECK-NEXT: br i1 poison, label [[IF]], label [[ELSE]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: if:
; CHECK-NEXT: [[PHI1:%.*]] = phi i32 [ 1, [[BR]] ], [ 2, [[ENTRY:%.*]] ]
; CHECK-NEXT: call void @foo(i32 [[PHI1]])
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: else:
; CHECK-NEXT: [[PHI2:%.*]] = phi i32 [ 3, [[BR]] ], [ 4, [[ENTRY]] ]
; CHECK-NEXT: call void @foo(i32 [[PHI2]])
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
switch i32 %v, label %br [
i32 1, label %if
i32 2, label %else
]
br:
call void @foo(i32 0)
br i1 poison, label %if, label %else
if:
%phi1 = phi i32 [ 1, %br ], [ 2, %entry ]
call void @foo(i32 %phi1)
ret void
else:
%phi2 = phi i32 [ 3, %br ], [ 4, %entry ]
call void @foo(i32 %phi2)
ret void
}
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