1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 2; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S | FileCheck %s 3 4target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 5 6define void @fn(ptr %hbuf, ptr %ref, i32 %height) { 7; CHECK-LABEL: define void @fn( 8; CHECK-SAME: ptr [[HBUF:%.*]], ptr [[REF:%.*]], i32 [[HEIGHT:%.*]]) { 9; CHECK-NEXT: entry: 10; CHECK-NEXT: store i16 0, ptr [[HBUF]], align 1 11; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[HEIGHT]], 0 12; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 13; CHECK: for.body.preheader: 14; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[HEIGHT]], 4 15; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] 16; CHECK: vector.memcheck: 17; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[HBUF]], i64 2 18; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[REF]], i64 2 19; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[HBUF]], [[SCEVGEP1]] 20; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[REF]], [[SCEVGEP]] 21; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] 22; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] 23; CHECK: vector.ph: 24; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[HEIGHT]], 4 25; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[HEIGHT]], [[N_MOD_VF]] 26; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 27; CHECK: vector.body: 28; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 29; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <4 x i16> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP1:%.*]], [[VECTOR_BODY]] ] 30; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr [[REF]], align 1, !alias.scope [[META0:![0-9]+]] 31; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i16> poison, i16 [[TMP0]], i64 0 32; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i16> [[BROADCAST_SPLATINSERT]], <4 x i16> poison, <4 x i32> zeroinitializer 33; CHECK-NEXT: [[TMP1]] = add <4 x i16> [[BROADCAST_SPLAT]], [[VEC_PHI]] 34; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 35; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] 36; CHECK-NEXT: br i1 [[TMP2]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]] 37; CHECK: middle.block: 38; CHECK-NEXT: [[TMP3:%.*]] = call i16 @llvm.vector.reduce.add.v4i16(<4 x i16> [[TMP1]]) 39; CHECK-NEXT: store i16 [[TMP3]], ptr [[HBUF]], align 1, !alias.scope [[META6:![0-9]+]], !noalias [[META0]] 40; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[HEIGHT]], [[N_VEC]] 41; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[SCALAR_PH]] 42; CHECK: scalar.ph: 43; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i16 [ [[TMP3]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[FOR_BODY_PREHEADER]] ] 44; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[FOR_BODY_PREHEADER]] ] 45; CHECK-NEXT: br label [[FOR_BODY:%.*]] 46; CHECK: for.body: 47; CHECK-NEXT: [[TMP4:%.*]] = phi i16 [ [[ADD:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ] 48; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 49; CHECK-NEXT: [[TMP5:%.*]] = load i16, ptr [[REF]], align 1 50; CHECK-NEXT: [[ADD]] = add i16 [[TMP5]], [[TMP4]] 51; CHECK-NEXT: store i16 [[ADD]], ptr [[HBUF]], align 1 52; CHECK-NEXT: [[INC]] = add i32 [[I]], 1 53; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[HEIGHT]] 54; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END_LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] 55; CHECK: for.end.loopexit: 56; CHECK-NEXT: br label [[FOR_END]] 57; CHECK: for.end: 58; CHECK-NEXT: ret void 59; 60entry: 61 store i16 0, ptr %hbuf, align 1 62 %cmp1 = icmp sgt i32 %height, 0 63 br i1 %cmp1, label %for.body.preheader, label %for.end 64 65for.body.preheader: 66 br label %for.body 67 68for.body: 69 %0 = phi i16 [ %add, %for.body ], [ 0, %for.body.preheader ] 70 %i = phi i32 [ 0, %for.body.preheader ], [ %inc, %for.body ] 71 %1 = load i16, ptr %ref, align 1 72 %add = add i16 %1, %0 73 store i16 %add, ptr %hbuf, align 1 74 %inc = add i32 %i, 1 75 %exitcond.not = icmp eq i32 %inc, %height 76 br i1 %exitcond.not, label %for.end, label %for.body 77 78for.end: 79 ret void 80} 81