blob: 0459bc849bfb303967a60f43dd0618f99ac83c5e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
; RUN: opt < %s -loop-reduce -S | grep phi | count 1
; This testcase should have ONE stride 18 indvar, the other use should have a
; loop invariant value (B) added to it inside of the loop, instead of having
; a whole indvar based on B for it.
declare i1 @cond(i32)
define void @test(i32 %B) {
; <label>:0
br label %Loop
Loop: ; preds = %Loop, %0
%IV = phi i32 [ 0, %0 ], [ %IVn, %Loop ] ; <i32> [#uses=3]
%C = mul i32 %IV, 18 ; <i32> [#uses=1]
%D = mul i32 %IV, 18 ; <i32> [#uses=1]
%E = add i32 %D, %B ; <i32> [#uses=1]
%cnd = call i1 @cond( i32 %E ) ; <i1> [#uses=1]
call i1 @cond( i32 %C ) ; <i1>:1 [#uses=0]
%IVn = add i32 %IV, 1 ; <i32> [#uses=1]
br i1 %cnd, label %Loop, label %Out
Out: ; preds = %Loop
ret void
}
|
