outer-only-reductions.ll
1.89 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
; RUN: opt < %s -basic-aa -loop-interchange -pass-remarks-missed='loop-interchange' -pass-remarks-output=%t -S \
; RUN: -verify-dom-info -verify-loop-info -verify-loop-lcssa 2>&1 | FileCheck -check-prefix=IR %s
; RUN: FileCheck --input-file=%t %s
; Outer loop only reductions are not supported currently.
@A = common global [500 x [500 x i32]] zeroinitializer
;; global X
;; for( int i=1;i<N;i++) {
;; for( int j=1;j<N;j++)
;; ;
;; X+=A[j][i];
;; }
; CHECK: --- !Missed
; CHECK-NEXT: Pass: loop-interchange
; CHECK-NEXT: Name: UnsupportedPHI
; CHECK-NEXT: Function: reduction_01
; IR-LABEL: @reduction_01(
; IR-NOT: split
define i32 @reduction_01(i32 %N) {
entry:
br label %outer.header
outer.header: ; preds = %for.cond1.for.inc6_crit_edge, %entry
%indvars.iv18 = phi i64 [ %indvars.iv.next19, %outer.inc ], [ 1, %entry ]
%add15 = phi i32 [ 0, %entry ], [ %add, %outer.inc ]
br label %for.body3
for.body3: ; preds = %for.body3, %for.body3.lr.ph
%indvars.iv = phi i64 [ 1, %outer.header ], [ %indvars.iv.next, %for.body3 ]
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %N
br i1 %exitcond, label %outer.inc, label %for.body3
outer.inc: ; preds = %for.body3
%arrayidx5 = getelementptr inbounds [500 x [500 x i32]], [500 x [500 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv18
%0 = load i32, i32* %arrayidx5
%add = add nsw i32 %add15, %0
%indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
%lftr.wideiv20 = trunc i64 %indvars.iv.next19 to i32
%exitcond21 = icmp eq i32 %lftr.wideiv20, %N
br i1 %exitcond21, label %for.end8, label %outer.header
for.end8: ; preds = %for.cond1.for.inc6_crit_edge, %entry
ret i32 %add
}