; RUN: opt < %s -disable-output -passes="print<da>" 2>&1 | FileCheck %s
; Note: exact results can be achived even if
; "-da-disable-delinearization-checks" is not used
; CHECK-LABEL: t1
; CHECK: da analyze - none!
; CHECK: da analyze - consistent anti [1 -2]!
; CHECK: da analyze - none!
;; #define N 1024
;; #define M 2048
;; void t1(int a[N][M]) {
;; for (int i = 0; i < N-1; ++i)
;; for (int j = 2; j < M; ++j)
;; a[i][j] = a[i+1][j-2];
;; }
;;
;; Note that there is a getelementptr with index 0, make sure we can analyze this case.
define void @t1([2048 x i32]* %a) {
entry:
br label %for.body
for.body: ; preds = %entry, %for.inc11
%indvars.iv4 = phi i64 [ 0, %entry ], [ %indvars.iv.next5, %for.inc11 ]
br label %for.body4
for.body4: ; preds = %for.body, %for.body4
%indvars.iv = phi i64 [ 2, %for.body ], [ %indvars.iv.next, %for.body4 ]
%0 = add nuw nsw i64 %indvars.iv4, 1
%1 = add nsw i64 %indvars.iv, -2
%arrayidx6 = getelementptr inbounds [2048 x i32], [2048 x i32]* %a, i64 %0, i64 %1
%2 = load i32, i32* %arrayidx6, align 4
%a_gep = getelementptr inbounds [2048 x i32], [2048 x i32]* %a, i64 0
%arrayidx10 = getelementptr inbounds [2048 x i32], [2048 x i32]* %a_gep, i64 %indvars.iv4, i64 %indvars.iv
store i32 %2, i32* %arrayidx10, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp ne i64 %indvars.iv.next, 2048
br i1 %exitcond, label %for.body4, label %for.inc11
for.inc11: ; preds = %for.body4
%indvars.iv.next5 = add nuw nsw i64 %indvars.iv4, 1
%exitcond7 = icmp ne i64 %indvars.iv.next5, 1023
br i1 %exitcond7, label %for.body, label %for.end13
for.end13: ; preds = %for.inc11
ret void
}
; CHECK-LABEL: t2
; CHECK: da analyze - consistent anti [1 -2]!
;; Similar to @t1 but includes a call with a "returned" arg, make sure we can analyze
;; this case.
define void @t2([2048 x i32]* %a) {
entry:
br label %for.body
for.body: ; preds = %entry, %for.inc11
%indvars.iv4 = phi i64 [ 0, %entry ], [ %indvars.iv.next5, %for.inc11 ]
br label %for.body4
for.body4: ; preds = %for.body, %for.body4
%indvars.iv = phi i64 [ 2, %for.body ], [ %indvars.iv.next, %for.body4 ]
%0 = add nuw nsw i64 %indvars.iv4, 1
%1 = add nsw i64 %indvars.iv, -2
%arrayidx6 = getelementptr inbounds [2048 x i32], [2048 x i32]* %a, i64 %0, i64 %1
%2 = load i32, i32* %arrayidx6, align 4
%call = call [2048 x i32]* @func_with_returned_arg([2048 x i32]* returned %a)
%arrayidx10 = getelementptr inbounds [2048 x i32], [2048 x i32]* %call, i64 %indvars.iv4, i64 %indvars.iv
store i32 %2, i32* %arrayidx10, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp ne i64 %indvars.iv.next, 2048
br i1 %exitcond, label %for.body4, label %for.inc11
for.inc11: ; preds = %for.body4
%indvars.iv.next5 = add nuw nsw i64 %indvars.iv4, 1
%exitcond7 = icmp ne i64 %indvars.iv.next5, 1023
br i1 %exitcond7, label %for.body, label %for.end13
for.end13: ; preds = %for.inc11
ret void
}
declare [2048 x i32]* @func_with_returned_arg([2048 x i32]* returned %arg)
; CHECK-LABEL: t3
; CHECK: da analyze - none!
; CHECK: da analyze - consistent anti [1 -2 0 -3 2]!
; CHECK: da analyze - none!
;; #define N 1024
;; #define M 2048
;; void t2(int a[][N][N][N][M]) {
;; for (int i1 = 0; i1 < N-1; ++i1)
;; for (int i2 = 2; i2 < N; ++i2)
;; for (int i3 = 0; i3 < N; ++i3)
;; for (int i4 = 3; i4 < N; ++i4)
;; for (int i5 = 0; i5 < M-2; ++i5)
;; a[i1][i2][i3][i4][i5] = a[i1+1][i2-2][i3][i4-3][i5+2];
;; }
define void @t3([1024 x [1024 x [1024 x [2048 x i32]]]]* %a) {
entry:
br label %for.body
for.body: ; preds = %entry, %for.inc46
%indvars.iv18 = phi i64 [ 0, %entry ], [ %indvars.iv.next19, %for.inc46 ]
br label %for.body4
for.body4: ; preds = %for.body, %for.inc43
%indvars.iv14 = phi i64 [ 2, %for.body ], [ %indvars.iv.next15, %for.inc43 ]
br label %for.body8
for.body8: ; preds = %for.body4, %for.inc40
%indvars.iv11 = phi i64 [ 0, %for.body4 ], [ %indvars.iv.next12, %for.inc40 ]
br label %for.body12
for.body12: ; preds = %for.body8, %for.inc37
%indvars.iv7 = phi i64 [ 3, %for.body8 ], [ %indvars.iv.next8, %for.inc37 ]
br label %for.body16
for.body16: ; preds = %for.body12, %for.body16
%indvars.iv = phi i64 [ 0, %for.body12 ], [ %indvars.iv.next, %for.body16 ]
%0 = add nuw nsw i64 %indvars.iv18, 1
%1 = add nsw i64 %indvars.iv14, -2
%2 = add nsw i64 %indvars.iv7, -3
%3 = add nuw nsw i64 %indvars.iv, 2
%arrayidx26 = getelementptr inbounds [1024 x [1024 x [1024 x [2048 x i32]]]], [1024 x [1024 x [1024 x [2048 x i32]]]]* %a, i64 %0, i64 %1, i64 %indvars.iv11, i64 %2, i64 %3
%4 = load i32, i32* %arrayidx26, align 4
%arrayidx36 = getelementptr inbounds [1024 x [1024 x [1024 x [2048 x i32]]]], [1024 x [1024 x [1024 x [2048 x i32]]]]* %a, i64 %indvars.iv18, i64 %indvars.iv14, i64 %indvars.iv11, i64 %indvars.iv7, i64 %indvars.iv
store i32 %4, i32* %arrayidx36, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp ne i64 %indvars.iv.next, 2046
br i1 %exitcond, label %for.body16, label %for.inc37
for.inc37: ; preds = %for.body16
%indvars.iv.next8 = add nuw nsw i64 %indvars.iv7, 1
%exitcond10 = icmp ne i64 %indvars.iv.next8, 1024
br i1 %exitcond10, label %for.body12, label %for.inc40
for.inc40: ; preds = %for.inc37
%indvars.iv.next12 = add nuw nsw i64 %indvars.iv11, 1
%exitcond13 = icmp ne i64 %indvars.iv.next12, 1024
br i1 %exitcond13, label %for.body8, label %for.inc43
for.inc43: ; preds = %for.inc40
%indvars.iv.next15 = add nuw nsw i64 %indvars.iv14, 1
%exitcond17 = icmp ne i64 %indvars.iv.next15, 1024
br i1 %exitcond17, label %for.body4, label %for.inc46
for.inc46: ; preds = %for.inc43
%indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
%exitcond21 = icmp ne i64 %indvars.iv.next19, 1023
br i1 %exitcond21, label %for.body, label %for.end48
for.end48: ; preds = %for.inc46
ret void
}