llvm/test/Transforms/LoopUnrollAndJam/se-forget.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt "-passes=print<scalar-evolution>,loop-unroll-and-jam" -verify-scev -S < %s | FileCheck %s

; Checks that we forget scalar evolution loops and dispositions, which allows
; scalar evolution to verify successfully. `print<scalar-evolution>` is needed
; to populate SCEV caches.

target datalayout = "e-m:e-i64:64-p:64:64-n32:64-S128-v256:256:256-v512:512:512"

define dso_local void @main() {
; CHECK-LABEL: @main(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = alloca [216 x float], align 4
; CHECK-NEXT:    [[Y:%.*]] = alloca [216 x float], align 4
; CHECK-NEXT:    [[X_IX_DIM_0:%.*]] = getelementptr i8, ptr [[X]], i64 -52
; CHECK-NEXT:    [[Y_IX_DIM_0:%.*]] = getelementptr i8, ptr [[Y]], i64 -52
; CHECK-NEXT:    br label [[OUTER_HEADER:%.*]]
; CHECK:       outer.header:
; CHECK-NEXT:    [[X_IX_DIM_1:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 4
; CHECK-NEXT:    [[X_IX_DIM_1_1:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1_1:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 8
; CHECK-NEXT:    [[X_IX_DIM_1_2:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1_2:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 12
; CHECK-NEXT:    [[X_IX_DIM_1_3:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1_3:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 16
; CHECK-NEXT:    [[X_IX_DIM_1_4:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1_4:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[X_IX_DIM_1_5:%.*]] = getelementptr i8, ptr [[X_IX_DIM_0]], i64 20
; CHECK-NEXT:    [[Y_IX_DIM_1_5:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_0]], i64 24
; CHECK-NEXT:    br label [[INNER:%.*]]
; CHECK:       inner:
; CHECK-NEXT:    [[INNER_IV_1:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_1_1:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_11:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT_1:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_1_2:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_2:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT_2:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_1_3:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_3:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT_3:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_1_4:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_4:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT_4:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_1_5:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ 0, [[INNER]] ]
; CHECK-NEXT:    [[INNER_IV_5:%.*]] = phi i64 [ 1, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT_5:%.*]], [[INNER]] ]
; CHECK-NEXT:    [[_IX_X_LEN:%.*]] = mul nuw nsw i64 [[INNER_IV_1]], 144
; CHECK-NEXT:    [[X_IX_DIM_2:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1]], i64 [[_IX_X_LEN]]
; CHECK-NEXT:    [[Y_IX_DIM_2:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1]], i64 [[_IX_X_LEN]]
; CHECK-NEXT:    [[_VAL_Y:%.*]] = load float, ptr [[Y_IX_DIM_2]], align 4
; CHECK-NEXT:    store float [[_VAL_Y]], ptr [[X_IX_DIM_2]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT]] = add nuw nsw i64 [[INNER_IV]], 1
; CHECK-NEXT:    [[_IX_X_LEN_12:%.*]] = mul nuw nsw i64 [[INNER_IV_1_1]], 144
; CHECK-NEXT:    [[X_IX_DIM_2_1:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1_1]], i64 [[_IX_X_LEN_12]]
; CHECK-NEXT:    [[Y_IX_DIM_2_1:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1_1]], i64 [[_IX_X_LEN_12]]
; CHECK-NEXT:    [[_VAL_Y_1:%.*]] = load float, ptr [[Y_IX_DIM_2_1]], align 4
; CHECK-NEXT:    store float [[_VAL_Y_1]], ptr [[X_IX_DIM_2_1]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT_1]] = add nuw nsw i64 [[INNER_IV_11]], 1
; CHECK-NEXT:    [[_IX_X_LEN_2:%.*]] = mul nuw nsw i64 [[INNER_IV_1_2]], 144
; CHECK-NEXT:    [[X_IX_DIM_2_2:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1_2]], i64 [[_IX_X_LEN_2]]
; CHECK-NEXT:    [[Y_IX_DIM_2_2:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1_2]], i64 [[_IX_X_LEN_2]]
; CHECK-NEXT:    [[_VAL_Y_2:%.*]] = load float, ptr [[Y_IX_DIM_2_2]], align 4
; CHECK-NEXT:    store float [[_VAL_Y_2]], ptr [[X_IX_DIM_2_2]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT_2]] = add nuw nsw i64 [[INNER_IV_2]], 1
; CHECK-NEXT:    [[_IX_X_LEN_3:%.*]] = mul nuw nsw i64 [[INNER_IV_1_3]], 144
; CHECK-NEXT:    [[X_IX_DIM_2_3:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1_3]], i64 [[_IX_X_LEN_3]]
; CHECK-NEXT:    [[Y_IX_DIM_2_3:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1_3]], i64 [[_IX_X_LEN_3]]
; CHECK-NEXT:    [[_VAL_Y_3:%.*]] = load float, ptr [[Y_IX_DIM_2_3]], align 4
; CHECK-NEXT:    store float [[_VAL_Y_3]], ptr [[X_IX_DIM_2_3]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT_3]] = add nuw nsw i64 [[INNER_IV_3]], 1
; CHECK-NEXT:    [[_IX_X_LEN_4:%.*]] = mul nuw nsw i64 [[INNER_IV_1_4]], 144
; CHECK-NEXT:    [[X_IX_DIM_2_4:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1_4]], i64 [[_IX_X_LEN_4]]
; CHECK-NEXT:    [[Y_IX_DIM_2_4:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1_4]], i64 [[_IX_X_LEN_4]]
; CHECK-NEXT:    [[_VAL_Y_4:%.*]] = load float, ptr [[Y_IX_DIM_2_4]], align 4
; CHECK-NEXT:    store float [[_VAL_Y_4]], ptr [[X_IX_DIM_2_4]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT_4]] = add nuw nsw i64 [[INNER_IV_4]], 1
; CHECK-NEXT:    [[_IX_X_LEN_5:%.*]] = mul nuw nsw i64 [[INNER_IV_1_5]], 144
; CHECK-NEXT:    [[X_IX_DIM_2_5:%.*]] = getelementptr i8, ptr [[X_IX_DIM_1_5]], i64 [[_IX_X_LEN_5]]
; CHECK-NEXT:    [[Y_IX_DIM_2_5:%.*]] = getelementptr i8, ptr [[Y_IX_DIM_1_5]], i64 [[_IX_X_LEN_5]]
; CHECK-NEXT:    [[_VAL_Y_5:%.*]] = load float, ptr [[Y_IX_DIM_2_5]], align 4
; CHECK-NEXT:    store float [[_VAL_Y_5]], ptr [[X_IX_DIM_2_5]], align 8
; CHECK-NEXT:    [[INNER_IV_NEXT_5]] = add nuw nsw i64 [[INNER_IV_5]], 1
; CHECK-NEXT:    [[EXITCOND_NOT_5:%.*]] = icmp eq i64 [[INNER_IV_NEXT_5]], 7
; CHECK-NEXT:    br i1 [[EXITCOND_NOT_5]], label [[OUTER_LATCH:%.*]], label [[INNER]]
; CHECK:       outer.latch:
; CHECK-NEXT:    br label [[EXIT:%.*]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  %x = alloca [216 x float], align 4
  %y = alloca [216 x float], align 4
  %x_ix_dim_0 = getelementptr i8, ptr %x, i64 -52
  %y_ix_dim_0 = getelementptr i8, ptr %y, i64 -52
  br label %outer.header

outer.header:          ; preds = %outer.latch, %entry
  %outer.iv = phi i64 [ 1, %entry ], [ %outer.iv.next, %outer.latch ]
  %_ix_x_len.1 = shl nuw nsw i64 %outer.iv, 2
  %x_ix_dim_1 = getelementptr i8, ptr %x_ix_dim_0, i64 20
  %y_ix_dim_1 = getelementptr i8, ptr %y_ix_dim_0, i64 %_ix_x_len.1
  br label %inner

inner:                                      ; preds = %inner, %outer.header
  %inner.iv.1 = phi i64 [ 1, %outer.header ], [ 0, %inner ]
  %inner.iv = phi i64 [ 1, %outer.header ], [ %inner.iv.next, %inner ]
  %_ix_x_len = mul nuw nsw i64 %inner.iv.1, 144
  %x_ix_dim_2 = getelementptr i8, ptr %x_ix_dim_1, i64 %_ix_x_len
  %y_ix_dim_2 = getelementptr i8, ptr %y_ix_dim_1, i64 %_ix_x_len
  %_val_y = load float, ptr %y_ix_dim_2, align 4
  %_add_tmp = fadd fast float %_val_y, 0.000000e+00
  store float %_add_tmp, ptr %x_ix_dim_2, align 8
  %inner.iv.next = add nuw nsw i64 %inner.iv, 1
  %exitcond.not = icmp eq i64 %inner.iv.next, 7
  br i1 %exitcond.not, label %outer.latch, label %inner

outer.latch:                                    ; preds = %inner
  %outer.iv.next = add nuw nsw i64 %outer.iv, 1
  %exitcond.not.1 = icmp eq i64 %outer.iv.next, 7
  br i1 %exitcond.not.1, label %exit, label %outer.header, !llvm.loop !1

exit:                                    ; preds = %outer.latch
  ret void
}

!1 = distinct !{!1, !2}
!2 = !{!"llvm.loop.unroll_and_jam.enable"}