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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -adce -S | FileCheck %s
declare void @f1()
declare void @f2()
declare void @f3()
declare void @f4()
define i32 @test1(i32 %X, i1 %D) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: E:
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: br i1 [[C]], label [[B:%.*]], label [[F:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B]] ], [ 123, [[F]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: B:
; CHECK-NEXT: call void @f2()
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: F:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: br label [[COMMON_RET]]
;
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
br i1 %C, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}
define i32 @test2(i32 %X, i1 %D) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: E:
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: br i1 [[C]], label [[B:%.*]], label [[F:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B]] ], [ 123, [[F]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: B:
; CHECK-NEXT: call void @f2()
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: F:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: br label [[COMMON_RET]]
;
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
%P = phi i1 [ true, %E ], [ %C, %A ] ; <i1> [#uses=1]
br i1 %P, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}
define i32 @test3(i32 %X, i1 %D, i32* %AP, i32* %BP) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: E:
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: br i1 [[C]], label [[B_CRITEDGE:%.*]], label [[F:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 345, [[B_CRITEDGE]] ], [ 123, [[F]] ]
; CHECK-NEXT: ret i32 [[COMMON_RET_OP]]
; CHECK: B.critedge:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: [[XX_C:%.*]] = load i32, i32* [[AP:%.*]], align 4
; CHECK-NEXT: store i32 [[XX_C]], i32* [[BP:%.*]], align 4
; CHECK-NEXT: call void @f2()
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: F:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: br label [[COMMON_RET]]
;
E:
%C = icmp eq i32 %X, 0 ; <i1> [#uses=2]
br i1 %C, label %T, label %F
T: ; preds = %A, %E
call void @f3( )
%XX = load i32, i32* %AP ; <i32> [#uses=1]
store i32 %XX, i32* %BP
br i1 %C, label %B, label %A
A: ; preds = %T
call void @f1( )
br i1 %D, label %T, label %F
B: ; preds = %T
call void @f2( )
ret i32 345
F: ; preds = %A, %E
call void @f3( )
ret i32 123
}
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