llvm/test/Transforms/LoopFusion/inner_loops.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=loop-fusion < %s 2>&1 | FileCheck %s

@A = common global [1024 x [1024 x i32]] zeroinitializer, align 16
@B = common global [1024 x [1024 x i32]] zeroinitializer, align 16


define void @dep_free() {
; CHECK-LABEL: define void @dep_free() {
; CHECK-NEXT:  [[BB:.*]]:
; CHECK-NEXT:    br label %[[BB9:.*]]
; CHECK:       [[BB9]]:
; CHECK-NEXT:    [[INDVARS_IV6:%.*]] = phi i64 [ [[INDVARS_IV_NEXT7:%.*]], %[[BB35:.*]] ], [ 0, %[[BB]] ]
; CHECK-NEXT:    [[DOT0:%.*]] = phi i32 [ 0, %[[BB]] ], [ [[TMP36:%.*]], %[[BB35]] ]
; CHECK-NEXT:    [[EXITCOND8:%.*]] = icmp ne i64 [[INDVARS_IV6]], 100
; CHECK-NEXT:    br i1 [[EXITCOND8]], label %[[BB11:.*]], label %[[BB10:.*]]
; CHECK:       [[BB10]]:
; CHECK-NEXT:    br label %[[BB37:.*]]
; CHECK:       [[BB11]]:
; CHECK-NEXT:    br label %[[BB12:.*]]
; CHECK:       [[BB12]]:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], %[[BB21:.*]] ], [ 0, %[[BB11]] ]
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV]], 100
; CHECK-NEXT:    br i1 [[EXITCOND]], label %[[BB14:.*]], label %[[BB23_PREHEADER:.*]]
; CHECK:       [[BB23_PREHEADER]]:
; CHECK-NEXT:    br label %[[BB23:.*]]
; CHECK:       [[BB14]]:
; CHECK-NEXT:    [[TMP:%.*]] = add nsw i32 [[DOT0]], -3
; CHECK-NEXT:    [[TMP15:%.*]] = add nuw nsw i64 [[INDVARS_IV6]], 3
; CHECK-NEXT:    [[TMP16:%.*]] = trunc i64 [[TMP15]] to i32
; CHECK-NEXT:    [[TMP17:%.*]] = mul nsw i32 [[TMP]], [[TMP16]]
; CHECK-NEXT:    [[TMP18:%.*]] = trunc i64 [[INDVARS_IV6]] to i32
; CHECK-NEXT:    [[TMP19:%.*]] = srem i32 [[TMP17]], [[TMP18]]
; CHECK-NEXT:    [[TMP20:%.*]] = getelementptr inbounds [1024 x [1024 x i32]], ptr @A, i64 0, i64 [[INDVARS_IV6]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    store i32 [[TMP19]], ptr [[TMP20]], align 4
; CHECK-NEXT:    br label %[[BB21]]
; CHECK:       [[BB21]]:
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    br label %[[BB12]]
; CHECK:       [[BB23]]:
; CHECK-NEXT:    [[INDVARS_IV3:%.*]] = phi i64 [ [[INDVARS_IV_NEXT4:%.*]], %[[BB33:.*]] ], [ 0, %[[BB23_PREHEADER]] ]
; CHECK-NEXT:    [[EXITCOND5:%.*]] = icmp ne i64 [[INDVARS_IV3]], 100
; CHECK-NEXT:    br i1 [[EXITCOND5]], label %[[BB25:.*]], label %[[BB35]]
; CHECK:       [[BB25]]:
; CHECK-NEXT:    [[TMP26:%.*]] = add nsw i32 [[DOT0]], -3
; CHECK-NEXT:    [[TMP27:%.*]] = add nuw nsw i64 [[INDVARS_IV6]], 3
; CHECK-NEXT:    [[TMP28:%.*]] = trunc i64 [[TMP27]] to i32
; CHECK-NEXT:    [[TMP29:%.*]] = mul nsw i32 [[TMP26]], [[TMP28]]
; CHECK-NEXT:    [[TMP30:%.*]] = trunc i64 [[INDVARS_IV6]] to i32
; CHECK-NEXT:    [[TMP31:%.*]] = srem i32 [[TMP29]], [[TMP30]]
; CHECK-NEXT:    [[TMP32:%.*]] = getelementptr inbounds [1024 x [1024 x i32]], ptr @B, i64 0, i64 [[INDVARS_IV6]], i64 [[INDVARS_IV3]]
; CHECK-NEXT:    store i32 [[TMP31]], ptr [[TMP32]], align 4
; CHECK-NEXT:    br label %[[BB33]]
; CHECK:       [[BB33]]:
; CHECK-NEXT:    [[INDVARS_IV_NEXT4]] = add nuw nsw i64 [[INDVARS_IV3]], 1
; CHECK-NEXT:    br label %[[BB23]]
; CHECK:       [[BB35]]:
; CHECK-NEXT:    [[INDVARS_IV_NEXT7]] = add nuw nsw i64 [[INDVARS_IV6]], 1
; CHECK-NEXT:    [[TMP36]] = add nuw nsw i32 [[DOT0]], 1
; CHECK-NEXT:    br label %[[BB9]]
; CHECK:       [[BB37]]:
; CHECK-NEXT:    ret void
;
bb:
  br label %bb9

bb9:                                              ; preds = %bb35, %bb
  %indvars.iv6 = phi i64 [ %indvars.iv.next7, %bb35 ], [ 0, %bb ]
  %.0 = phi i32 [ 0, %bb ], [ %tmp36, %bb35 ]
  %exitcond8 = icmp ne i64 %indvars.iv6, 100
  br i1 %exitcond8, label %bb11, label %bb10

bb10:                                             ; preds = %bb9
  br label %bb37

bb11:                                             ; preds = %bb9
  br label %bb12

bb12:                                             ; preds = %bb21, %bb11
  %indvars.iv = phi i64 [ %indvars.iv.next, %bb21 ], [ 0, %bb11 ]
  %exitcond = icmp ne i64 %indvars.iv, 100
  br i1 %exitcond, label %bb14, label %bb23

bb14:                                             ; preds = %bb12
  %tmp = add nsw i32 %.0, -3
  %tmp15 = add nuw nsw i64 %indvars.iv6, 3
  %tmp16 = trunc i64 %tmp15 to i32
  %tmp17 = mul nsw i32 %tmp, %tmp16
  %tmp18 = trunc i64 %indvars.iv6 to i32
  %tmp19 = srem i32 %tmp17, %tmp18
  %tmp20 = getelementptr inbounds [1024 x [1024 x i32]], ptr @A, i64 0, i64 %indvars.iv6, i64 %indvars.iv
  store i32 %tmp19, ptr %tmp20, align 4
  br label %bb21

bb21:                                             ; preds = %bb14
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  br label %bb12

bb23:                                             ; preds = %bb33, %bb12
  %indvars.iv3 = phi i64 [ %indvars.iv.next4, %bb33 ], [ 0, %bb12 ]
  %exitcond5 = icmp ne i64 %indvars.iv3, 100
  br i1 %exitcond5, label %bb25, label %bb35

bb25:                                             ; preds = %bb23
  %tmp26 = add nsw i32 %.0, -3
  %tmp27 = add nuw nsw i64 %indvars.iv6, 3
  %tmp28 = trunc i64 %tmp27 to i32
  %tmp29 = mul nsw i32 %tmp26, %tmp28
  %tmp30 = trunc i64 %indvars.iv6 to i32
  %tmp31 = srem i32 %tmp29, %tmp30
  %tmp32 = getelementptr inbounds [1024 x [1024 x i32]], ptr @B, i64 0, i64 %indvars.iv6, i64 %indvars.iv3
  store i32 %tmp31, ptr %tmp32, align 4
  br label %bb33

bb33:                                             ; preds = %bb25
  %indvars.iv.next4 = add nuw nsw i64 %indvars.iv3, 1
  br label %bb23

bb35:                                             ; preds = %bb23
  %indvars.iv.next7 = add nuw nsw i64 %indvars.iv6, 1
  %tmp36 = add nuw nsw i32 %.0, 1
  br label %bb9

bb37:                                             ; preds = %bb10
  ret void
}