llvm/test/Transforms/SLPVectorizer/X86/simple-loop.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=slp-vectorizer,dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s

target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"

define i32 @rollable(ptr noalias nocapture %in, ptr noalias nocapture %out, i64 %n) {
; CHECK-LABEL: @rollable(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 [[N:%.*]], 0
; CHECK-NEXT:    br i1 [[TMP1]], label [[DOT_CRIT_EDGE:%.*]], label [[DOTLR_PH:%.*]]
; CHECK:       .lr.ph:
; CHECK-NEXT:    [[I_019:%.*]] = phi i64 [ [[TMP8:%.*]], [[DOTLR_PH]] ], [ 0, [[TMP0:%.*]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = shl i64 [[I_019]], 2
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[IN:%.*]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[OUT:%.*]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP5:%.*]] = load <4 x i32>, ptr [[TMP3]], align 4
; CHECK-NEXT:    [[TMP6:%.*]] = mul <4 x i32> [[TMP5]], <i32 7, i32 7, i32 7, i32 7>
; CHECK-NEXT:    [[TMP7:%.*]] = add <4 x i32> [[TMP6]], <i32 7, i32 14, i32 21, i32 28>
; CHECK-NEXT:    store <4 x i32> [[TMP7]], ptr [[TMP4]], align 4
; CHECK-NEXT:    [[TMP8]] = add i64 [[I_019]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[TMP8]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[DOT_CRIT_EDGE]], label [[DOTLR_PH]]
; CHECK:       ._crit_edge:
; CHECK-NEXT:    ret i32 undef
;
  %1 = icmp eq i64 %n, 0
  br i1 %1, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %i.019 = phi i64 [ %26, %.lr.ph ], [ 0, %0 ]
  %2 = shl i64 %i.019, 2
  %3 = getelementptr inbounds i32, ptr %in, i64 %2
  %4 = load i32, ptr %3, align 4
  %5 = or disjoint i64 %2, 1
  %6 = getelementptr inbounds i32, ptr %in, i64 %5
  %7 = load i32, ptr %6, align 4
  %8 = or disjoint i64 %2, 2
  %9 = getelementptr inbounds i32, ptr %in, i64 %8
  %10 = load i32, ptr %9, align 4
  %11 = or disjoint i64 %2, 3
  %12 = getelementptr inbounds i32, ptr %in, i64 %11
  %13 = load i32, ptr %12, align 4
  %14 = mul i32 %4, 7
  %15 = add i32 %14, 7
  %16 = mul i32 %7, 7
  %17 = add i32 %16, 14
  %18 = mul i32 %10, 7
  %19 = add i32 %18, 21
  %20 = mul i32 %13, 7
  %21 = add i32 %20, 28
  %22 = getelementptr inbounds i32, ptr %out, i64 %2
  store i32 %15, ptr %22, align 4
  %23 = getelementptr inbounds i32, ptr %out, i64 %5
  store i32 %17, ptr %23, align 4
  %24 = getelementptr inbounds i32, ptr %out, i64 %8
  store i32 %19, ptr %24, align 4
  %25 = getelementptr inbounds i32, ptr %out, i64 %11
  store i32 %21, ptr %25, align 4
  %26 = add i64 %i.019, 1
  %exitcond = icmp eq i64 %26, %n
  br i1 %exitcond, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  ret i32 undef
}

define i32 @unrollable(ptr %in, ptr %out, i64 %n) nounwind ssp uwtable {
; CHECK-LABEL: @unrollable(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 [[N:%.*]], 0
; CHECK-NEXT:    br i1 [[TMP1]], label [[DOT_CRIT_EDGE:%.*]], label [[DOTLR_PH:%.*]]
; CHECK:       .lr.ph:
; CHECK-NEXT:    [[I_019:%.*]] = phi i64 [ [[TMP14:%.*]], [[DOTLR_PH]] ], [ 0, [[TMP0:%.*]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = shl i64 [[I_019]], 2
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[IN:%.*]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = or disjoint i64 [[TMP2]], 2
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[IN]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[OUT:%.*]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP7:%.*]] = load <2 x i32>, ptr [[TMP3]], align 4
; CHECK-NEXT:    [[TMP8:%.*]] = mul <2 x i32> [[TMP7]], <i32 7, i32 7>
; CHECK-NEXT:    [[TMP9:%.*]] = add <2 x i32> [[TMP8]], <i32 7, i32 14>
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[OUT]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP11:%.*]] = load <2 x i32>, ptr [[TMP5]], align 4
; CHECK-NEXT:    [[TMP12:%.*]] = mul <2 x i32> [[TMP11]], <i32 7, i32 7>
; CHECK-NEXT:    [[TMP13:%.*]] = add <2 x i32> [[TMP12]], <i32 21, i32 28>
; CHECK-NEXT:    store <2 x i32> [[TMP9]], ptr [[TMP6]], align 4
; CHECK-NEXT:    [[BARRIER:%.*]] = call i32 @goo(i32 0)
; CHECK-NEXT:    store <2 x i32> [[TMP13]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[TMP14]] = add i64 [[I_019]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[TMP14]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[DOT_CRIT_EDGE]], label [[DOTLR_PH]]
; CHECK:       ._crit_edge:
; CHECK-NEXT:    ret i32 undef
;
  %1 = icmp eq i64 %n, 0
  br i1 %1, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %i.019 = phi i64 [ %26, %.lr.ph ], [ 0, %0 ]
  %2 = shl i64 %i.019, 2
  %3 = getelementptr inbounds i32, ptr %in, i64 %2
  %4 = load i32, ptr %3, align 4
  %5 = or disjoint i64 %2, 1
  %6 = getelementptr inbounds i32, ptr %in, i64 %5
  %7 = load i32, ptr %6, align 4
  %8 = or disjoint i64 %2, 2
  %9 = getelementptr inbounds i32, ptr %in, i64 %8
  %10 = load i32, ptr %9, align 4
  %11 = or disjoint i64 %2, 3
  %12 = getelementptr inbounds i32, ptr %in, i64 %11
  %13 = load i32, ptr %12, align 4
  %14 = mul i32 %4, 7
  %15 = add i32 %14, 7
  %16 = mul i32 %7, 7
  %17 = add i32 %16, 14
  %18 = mul i32 %10, 7
  %19 = add i32 %18, 21
  %20 = mul i32 %13, 7
  %21 = add i32 %20, 28
  %22 = getelementptr inbounds i32, ptr %out, i64 %2
  store i32 %15, ptr %22, align 4
  %23 = getelementptr inbounds i32, ptr %out, i64 %5
  store i32 %17, ptr %23, align 4
  %barrier = call i32 @goo(i32 0)                      ; <---------------- memory barrier.
  %24 = getelementptr inbounds i32, ptr %out, i64 %8
  store i32 %19, ptr %24, align 4
  %25 = getelementptr inbounds i32, ptr %out, i64 %11
  store i32 %21, ptr %25, align 4
  %26 = add i64 %i.019, 1
  %exitcond = icmp eq i64 %26, %n
  br i1 %exitcond, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  ret i32 undef
}

declare i32 @goo(i32)