; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -passes=loop-interchange -cache-line-size=64 -S | FileCheck %s

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"

@A = common global [100 x [100 x i64]] zeroinitializer

;;  for(int i=0;i<100;i++)
;;    for(int j=0;j<100;j++)
;;      A[j][i] = A[j][i]+k;

define void @interchange_01(i64 %k, i64 %N) !dbg !5 {
; CHECK-LABEL: define void @interchange_01(
; CHECK-SAME: i64 [[K:%.*]], i64 [[N:%.*]]) !dbg [[DBG5:![0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    br label %[[FOR2_PREHEADER:.*]]
; CHECK:       [[FOR1_HEADER_PREHEADER:.*]]:
; CHECK-NEXT:    br label %[[FOR1_HEADER:.*]]
; CHECK:       [[FOR1_HEADER]]:
; CHECK-NEXT:    [[J23:%.*]] = phi i64 [ [[J_NEXT24:%.*]], %[[FOR1_INC10:.*]] ], [ 0, %[[FOR1_HEADER_PREHEADER]] ]
; CHECK-NEXT:      #dbg_value(i64 [[J:%.*]], [[META13:![0-9]+]], !DIExpression(), [[META14:![0-9]+]])
; CHECK-NEXT:    br label %[[FOR2_SPLIT1:.*]]
; CHECK:       [[FOR2_PREHEADER]]:
; CHECK-NEXT:    br label %[[FOR2:.*]]
; CHECK:       [[FOR2]]:
; CHECK-NEXT:    [[J]] = phi i64 [ [[TMP0:%.*]], %[[FOR2_SPLIT:.*]] ], [ 0, %[[FOR2_PREHEADER]] ]
; CHECK-NEXT:    br label %[[FOR1_HEADER_PREHEADER]]
; CHECK:       [[FOR2_SPLIT1]]:
; CHECK-NEXT:      #dbg_value(i64 [[J]], [[META13]], !DIExpression(), [[META14]])
; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds [100 x [100 x i64]], ptr @A, i64 0, i64 [[J]], i64 [[J23]]
; CHECK-NEXT:    [[LV:%.*]] = load i64, ptr [[ARRAYIDX5]], align 8
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i64 [[LV]], [[K]]
; CHECK-NEXT:    store i64 [[ADD]], ptr [[ARRAYIDX5]], align 8
; CHECK-NEXT:    [[J_NEXT:%.*]] = add nuw nsw i64 [[J]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[J]], 99
; CHECK-NEXT:      #dbg_value(i64 [[J]], [[META13]], !DIExpression(), [[META14]])
; CHECK-NEXT:    br label %[[FOR1_INC10]]
; CHECK:       [[FOR2_SPLIT]]:
; CHECK-NEXT:    [[TMP0]] = add nuw nsw i64 [[J]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 [[J]], 99
; CHECK-NEXT:    br i1 [[TMP1]], label %[[FOR_END12:.*]], label %[[FOR2]]
; CHECK:       [[FOR1_INC10]]:
; CHECK-NEXT:    [[J_NEXT24]] = add nuw nsw i64 [[J23]], 1
; CHECK-NEXT:      #dbg_value(i64 [[J]], [[META13]], !DIExpression(), [[META14]])
; CHECK-NEXT:    [[EXITCOND26:%.*]] = icmp eq i64 [[J23]], 99
; CHECK-NEXT:    br i1 [[EXITCOND26]], label %[[FOR2_SPLIT]], label %[[FOR1_HEADER]]
; CHECK:       [[FOR_END12]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %for1.header

for1.header:
  %j23 = phi i64 [ 0, %entry ], [ %j.next24, %for1.inc10 ]
  call void @llvm.dbg.value(metadata i64 %j, metadata !13, metadata !DIExpression()), !dbg !14
  br label %for2

for2:
  %j = phi i64 [ %j.next, %for2 ], [ 0, %for1.header ]
  call void @llvm.dbg.value(metadata i64 %j, metadata !13, metadata !DIExpression()), !dbg !14
  %arrayidx5 = getelementptr inbounds [100 x [100 x i64]], ptr @A, i64 0, i64 %j, i64 %j23
  %lv = load i64, ptr %arrayidx5
  %add = add nsw i64 %lv, %k
  store i64 %add, ptr %arrayidx5
  %j.next = add nuw nsw i64 %j, 1
  %exitcond = icmp eq i64 %j, 99
  call void @llvm.dbg.value(metadata i64 %j, metadata !13, metadata !DIExpression()), !dbg !14
  br i1 %exitcond, label %for1.inc10, label %for2

for1.inc10:
  %j.next24 = add nuw nsw i64 %j23, 1
  call void @llvm.dbg.value(metadata i64 %j, metadata !13, metadata !DIExpression()), !dbg !14
  %exitcond26 = icmp eq i64 %j23, 99
  br i1 %exitcond26, label %for.end12, label %for1.header

for.end12:
  ret void
}

; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata)

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "test.c", directory: "/test")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
!6 = !DISubroutineType(types: !7)
!7 = !{null, !8, !8, !11}
!8 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !9)
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 32, align: 32)
!10 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
!11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!12 = !{!13}
!13 = !DILocalVariable(name: "a", arg: 1, scope: !5, file: !1, line: 1, type: !8)
!14 = !DILocation(line: 1, column: 27, scope: !5)
;.
; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C99, file: [[META1:![0-9]+]], producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: [[META2:![0-9]+]])
; CHECK: [[META1]] = !DIFile(filename: "{{.*}}test.c", directory: {{.*}})
; CHECK: [[META2]] = !{}
; CHECK: [[DBG5]] = distinct !DISubprogram(name: "foo", scope: [[META1]], file: [[META1]], line: 1, type: [[META6:![0-9]+]], scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: [[META0]], retainedNodes: [[META12:![0-9]+]])
; CHECK: [[META6]] = !DISubroutineType(types: [[META7:![0-9]+]])
; CHECK: [[META7]] = !{null, [[META8:![0-9]+]], [[META8]], [[META11:![0-9]+]]}
; CHECK: [[META8]] = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: [[META9:![0-9]+]])
; CHECK: [[META9]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: [[META10:![0-9]+]], size: 32, align: 32)
; CHECK: [[META10]] = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
; CHECK: [[META11]] = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
; CHECK: [[META12]] = !{[[META13]]}
; CHECK: [[META13]] = !DILocalVariable(name: "a", arg: 1, scope: [[DBG5]], file: [[META1]], line: 1, type: [[META8]])
; CHECK: [[META14]] = !DILocation(line: 1, column: 27, scope: [[DBG5]])
;.