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; RUN: opt < %s -passes=loop-interchange -pass-remarks-missed='loop-interchange' -pass-remarks-output=%t \
; RUN: -verify-dom-info -verify-loop-info -verify-loop-lcssa
; RUN: FileCheck --input-file=%t %s
;; The original code:
;;
;; #define N 4
;; int a[N*N][N*N][N*N];
;; void f() {
;; for (int i = 0; i < N; i++)
;; for (int j = 1; j < 2*N; j++)
;; for (int k = 1; k < 2*N; k++)
;; a[2*i][k+1][j-1] -= a[i+N-1][k][j];
;; }
;;
;; The entry of the direction vector for the outermost loop is `DVEntry::LE`.
;; We need to treat this as `*`, not `<`. See issue #123920 for details.
; CHECK: --- !Missed
; CHECK-NEXT: Pass: loop-interchange
; CHECK-NEXT: Name: Dependence
; CHECK-NEXT: Function: f
; CHECK: --- !Missed
; CHECK-NEXT: Pass: loop-interchange
; CHECK-NEXT: Name: Dependence
; CHECK-NEXT: Function: f
@a = dso_local global [16 x [16 x [16 x i32]]] zeroinitializer, align 4
define dso_local void @f() {
entry:
br label %for.cond1.preheader
for.cond1.preheader:
%i.039 = phi i32 [ 0, %entry ], [ %inc26, %for.cond.cleanup3 ]
%sub = add nuw nsw i32 %i.039, 3
%idxprom = zext nneg i32 %sub to i64
%mul = shl nuw nsw i32 %i.039, 1
%idxprom13 = zext nneg i32 %mul to i64
br label %for.cond5.preheader
for.cond.cleanup:
ret void
for.cond5.preheader:
%j.038 = phi i32 [ 1, %for.cond1.preheader ], [ %inc23, %for.cond.cleanup7 ]
%idxprom11 = zext nneg i32 %j.038 to i64
%sub18 = add nsw i32 %j.038, -1
%idxprom19 = sext i32 %sub18 to i64
br label %for.body8
for.cond.cleanup3:
%inc26 = add nuw nsw i32 %i.039, 1
%cmp = icmp samesign ult i32 %i.039, 3
br i1 %cmp, label %for.cond1.preheader, label %for.cond.cleanup
for.cond.cleanup7:
%inc23 = add nuw nsw i32 %j.038, 1
%cmp2 = icmp samesign ult i32 %j.038, 7
br i1 %cmp2, label %for.cond5.preheader, label %for.cond.cleanup3
for.body8:
%k.037 = phi i32 [ 1, %for.cond5.preheader ], [ %add15, %for.body8 ]
%idxprom9 = zext nneg i32 %k.037 to i64
%arrayidx12 = getelementptr inbounds nuw [16 x [16 x [16 x i32]]], ptr @a, i64 0, i64 %idxprom, i64 %idxprom9, i64 %idxprom11
%0 = load i32, ptr %arrayidx12, align 4
%add15 = add nuw nsw i32 %k.037, 1
%idxprom16 = zext nneg i32 %add15 to i64
%arrayidx20 = getelementptr inbounds [16 x [16 x [16 x i32]]], ptr @a, i64 0, i64 %idxprom13, i64 %idxprom16, i64 %idxprom19
%1 = load i32, ptr %arrayidx20, align 4
%sub21 = sub nsw i32 %1, %0
store i32 %sub21, ptr %arrayidx20, align 4
%cmp6 = icmp samesign ult i32 %k.037, 7
br i1 %cmp6, label %for.body8, label %for.cond.cleanup7
}
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