llvm-project

1
; RUN: opt < %s -passes=simple-loop-unswitch,indvars -disable-output
2
; Require SCEV before LCSSA.
3
define void @foo() {
4
entry:
5
	%i = alloca i32, align 4		; <ptr> [#uses=5]
6
	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
7
	store i32 0, ptr %i, align 4
8
	br label %bb3
9

10
bb:		; preds = %bb3
11
	%tmp = load i32, ptr %i, align 4		; <i32> [#uses=1]
12
	call void @bar( i32 %tmp )
13
	%tmp1 = load i32, ptr %i, align 4		; <i32> [#uses=1]
14
	%tmp2 = add i32 %tmp1, 1		; <i32> [#uses=1]
15
	store i32 %tmp2, ptr %i, align 4
16
	br label %bb3
17

18
bb3:		; preds = %bb, %entry
19
	%tmp4 = load i32, ptr %i, align 4		; <i32> [#uses=1]
20
	%tmp5 = icmp sle i32 %tmp4, 9		; <i1> [#uses=1]
21
	%tmp56 = zext i1 %tmp5 to i8		; <i8> [#uses=1]
22
	%toBool = icmp ne i8 %tmp56, 0		; <i1> [#uses=1]
23
	br i1 %toBool, label %bb, label %bb7
24

25
bb7:		; preds = %bb3
26
	br label %return
27

28
return:		; preds = %bb7
29
	ret void
30
}
31

32
declare void @bar(i32)
33