; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
declare void @foo_01()
declare void @foo_02()
declare void @foo_03()
define i32 @test_01(i32* %p, i32 %x, i1 %cond) {
; CHECK-LABEL: @test_01(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB:%.*]], label [[COMMON_RET:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ [[R:%.*]], [[BB]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: bb:
; CHECK-NEXT: [[R]] = load i32, i32* [[P:%.*]], align 4
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
br i1 %cond, label %bb, label %pred
pred:
switch i32 %x, label %other_succ [i32 42, label %bb
i32 123456, label %bb
i32 -654321, label %bb]
bb:
%phi = phi i32* [null, %pred], [null, %pred], [null, %pred], [%p, %entry]
%r = load i32, i32* %phi
ret i32 %r
other_succ:
ret i32 0
}
define i32 @test_02(i32* %p, i32 %x, i1 %cond) {
; CHECK-LABEL: @test_02(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB:%.*]], label [[COMMON_RET:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ [[R:%.*]], [[BB]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: bb:
; CHECK-NEXT: [[R]] = load i32, i32* [[P:%.*]], align 4
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
br i1 %cond, label %bb, label %pred
pred:
switch i32 %x, label %bb [i32 42, label %other_succ
i32 123456, label %other_succ
i32 -654321, label %other_succ]
bb:
%phi = phi i32* [null, %pred], [%p, %entry]
%r = load i32, i32* %phi
ret i32 %r
other_succ:
ret i32 0
}
define i32 @test_03(i32* %p, i32 %x, i1 %cond) {
; CHECK-LABEL: @test_03(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB:%.*]], label [[PRED:%.*]]
; CHECK: pred:
; CHECK-NEXT: switch i32 [[X:%.*]], label [[UNREACHABLE:%.*]] [
; CHECK-NEXT: i32 42, label [[COMMON_RET:%.*]]
; CHECK-NEXT: i32 123456, label [[COMMON_RET]]
; CHECK-NEXT: i32 -654321, label [[COMMON_RET]]
; CHECK-NEXT: i32 1, label [[DO_1:%.*]]
; CHECK-NEXT: i32 2, label [[DO_2:%.*]]
; CHECK-NEXT: i32 3, label [[DO_3:%.*]]
; CHECK-NEXT: ]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ [[R:%.*]], [[BB]] ], [ 1, [[DO_1]] ], [ 1, [[DO_2]] ], [ 1, [[DO_3]] ], [ 0, [[PRED]] ], [ 0, [[PRED]] ], [ 0, [[PRED]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: unreachable:
; CHECK-NEXT: unreachable
; CHECK: bb:
; CHECK-NEXT: [[R]] = load i32, i32* [[P:%.*]], align 4
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_1:
; CHECK-NEXT: call void @foo_01()
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_2:
; CHECK-NEXT: call void @foo_02()
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_3:
; CHECK-NEXT: call void @foo_03()
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
br i1 %cond, label %bb, label %pred
pred:
switch i32 %x, label %bb [i32 42, label %other_succ
i32 123456, label %other_succ
i32 -654321, label %other_succ
i32 1, label %do_1
i32 2, label %do_2
i32 3, label %do_3]
bb:
%phi = phi i32* [null, %pred], [%p, %entry]
%r = load i32, i32* %phi
ret i32 %r
do_1:
call void @foo_01()
ret i32 1
do_2:
call void @foo_02()
ret i32 1
do_3:
call void @foo_03()
ret i32 1
other_succ:
ret i32 0
}
define i32 @test_04(i32* %p, i32 %x, i1 %cond) {
; CHECK-LABEL: @test_04(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[BB:%.*]], label [[PRED:%.*]]
; CHECK: pred:
; CHECK-NEXT: switch i32 [[X:%.*]], label [[COMMON_RET:%.*]] [
; CHECK-NEXT: i32 3, label [[DO_3:%.*]]
; CHECK-NEXT: i32 2, label [[DO_2:%.*]]
; CHECK-NEXT: i32 1, label [[DO_1:%.*]]
; CHECK-NEXT: ]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ [[R:%.*]], [[BB]] ], [ 1, [[DO_1]] ], [ 1, [[DO_2]] ], [ 1, [[DO_3]] ], [ 0, [[PRED]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: bb:
; CHECK-NEXT: [[R]] = load i32, i32* [[P:%.*]], align 4
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_1:
; CHECK-NEXT: call void @foo_01()
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_2:
; CHECK-NEXT: call void @foo_02()
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: do_3:
; CHECK-NEXT: call void @foo_03()
; CHECK-NEXT: br label [[COMMON_RET]]
;
entry:
br i1 %cond, label %bb, label %pred
pred:
switch i32 %x, label %other_succ [i32 42, label %bb
i32 123456, label %bb
i32 -654321, label %bb
i32 1, label %do_1
i32 2, label %do_2
i32 3, label %do_3]
bb:
%phi = phi i32* [null, %pred], [null, %pred], [null, %pred], [%p, %entry]
%r = load i32, i32* %phi
ret i32 %r
do_1:
call void @foo_01()
ret i32 1
do_2:
call void @foo_02()
ret i32 1
do_3:
call void @foo_03()
ret i32 1
other_succ:
ret i32 0
}