1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 3; To test epilogue-vectorization we need to make sure that the vectorizer actually vectorizes the loop. 4; Without a target triple this becomes difficult, unless we force vectorization through user hints. 5; Currently user provided vectorization hints prevent epilogue vectorization unless the forced 6; VF is the same as the epilogue vectorization VF. To make these tests target independent we'll use a 7; trick where both VFs are forced to be the same value. Mismatching VFs are tested in target specific tests. 8; RUN: opt -passes='loop-vectorize' -force-vector-width=4 -enable-epilogue-vectorization -epilogue-vectorization-force-VF=4 -S %s | FileCheck %s 9 10; Some simpler cases are found profitable even without triple or user hints. 11; RUN: opt -passes='loop-vectorize' -enable-epilogue-vectorization -epilogue-vectorization-force-VF=2 -S %s | FileCheck --check-prefix=CHECK-PROFITABLE-BY-DEFAULT %s 12 13target datalayout = "e-m:e-i64:64-n32:64-v128:128:128" 14 15define dso_local void @f1(float* noalias %aa, float* noalias %bb, float* noalias %cc, i32 signext %N) { 16; CHECK-LABEL: @f1( 17; CHECK-NEXT: entry: 18; CHECK-NEXT: [[AA1:%.*]] = bitcast float* [[AA:%.*]] to i8* 19; CHECK-NEXT: [[BB3:%.*]] = bitcast float* [[BB:%.*]] to i8* 20; CHECK-NEXT: [[CC6:%.*]] = bitcast float* [[CC:%.*]] to i8* 21; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0 22; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]] 23; CHECK: iter.check: 24; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64 25; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 26; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] 27; CHECK: vector.memcheck: 28; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr float, float* [[AA]], i64 [[WIDE_TRIP_COUNT]] 29; CHECK-NEXT: [[SCEVGEP2:%.*]] = bitcast float* [[SCEVGEP]] to i8* 30; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr float, float* [[BB]], i64 [[WIDE_TRIP_COUNT]] 31; CHECK-NEXT: [[SCEVGEP45:%.*]] = bitcast float* [[SCEVGEP4]] to i8* 32; CHECK-NEXT: [[SCEVGEP7:%.*]] = getelementptr float, float* [[CC]], i64 [[WIDE_TRIP_COUNT]] 33; CHECK-NEXT: [[SCEVGEP78:%.*]] = bitcast float* [[SCEVGEP7]] to i8* 34; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult i8* [[AA1]], [[SCEVGEP45]] 35; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult i8* [[BB3]], [[SCEVGEP2]] 36; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] 37; CHECK-NEXT: [[BOUND09:%.*]] = icmp ult i8* [[AA1]], [[SCEVGEP78]] 38; CHECK-NEXT: [[BOUND110:%.*]] = icmp ult i8* [[CC6]], [[SCEVGEP2]] 39; CHECK-NEXT: [[FOUND_CONFLICT11:%.*]] = and i1 [[BOUND09]], [[BOUND110]] 40; CHECK-NEXT: [[CONFLICT_RDX:%.*]] = or i1 [[FOUND_CONFLICT]], [[FOUND_CONFLICT11]] 41; CHECK-NEXT: [[MEMCHECK_CONFLICT:%.*]] = and i1 [[CONFLICT_RDX]], true 42; CHECK-NEXT: br i1 [[MEMCHECK_CONFLICT]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 43; CHECK: vector.main.loop.iter.check: 44; CHECK-NEXT: [[MIN_ITERS_CHECK12:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 45; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK12]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 46; CHECK: vector.ph: 47; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 48; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]] 49; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 50; CHECK: vector.body: 51; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 52; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 53; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[TMP0]] 54; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0 55; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <4 x float>* 56; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP3]], align 4, !alias.scope !0 57; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[TMP0]] 58; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0 59; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <4 x float>* 60; CHECK-NEXT: [[WIDE_LOAD13:%.*]] = load <4 x float>, <4 x float>* [[TMP6]], align 4, !alias.scope !3 61; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <4 x float> [[WIDE_LOAD]], [[WIDE_LOAD13]] 62; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[TMP0]] 63; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, float* [[TMP8]], i32 0 64; CHECK-NEXT: [[TMP10:%.*]] = bitcast float* [[TMP9]] to <4 x float>* 65; CHECK-NEXT: store <4 x float> [[TMP7]], <4 x float>* [[TMP10]], align 4, !alias.scope !5, !noalias !7 66; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 67; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 68; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]] 69; CHECK: middle.block: 70; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 71; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 72; CHECK: vec.epilog.iter.check: 73; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 74; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 75; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 76; CHECK: vec.epilog.ph: 77; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 78; CHECK-NEXT: [[N_MOD_VF14:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 79; CHECK-NEXT: [[N_VEC15:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF14]] 80; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 81; CHECK: vec.epilog.vector.body: 82; CHECK-NEXT: [[INDEX16:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT17:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 83; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[INDEX16]], 0 84; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[TMP12]] 85; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds float, float* [[TMP13]], i32 0 86; CHECK-NEXT: [[TMP15:%.*]] = bitcast float* [[TMP14]] to <4 x float>* 87; CHECK-NEXT: [[WIDE_LOAD19:%.*]] = load <4 x float>, <4 x float>* [[TMP15]], align 4 88; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[TMP12]] 89; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[TMP16]], i32 0 90; CHECK-NEXT: [[TMP18:%.*]] = bitcast float* [[TMP17]] to <4 x float>* 91; CHECK-NEXT: [[WIDE_LOAD20:%.*]] = load <4 x float>, <4 x float>* [[TMP18]], align 4 92; CHECK-NEXT: [[TMP19:%.*]] = fadd fast <4 x float> [[WIDE_LOAD19]], [[WIDE_LOAD20]] 93; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[TMP12]] 94; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds float, float* [[TMP20]], i32 0 95; CHECK-NEXT: [[TMP22:%.*]] = bitcast float* [[TMP21]] to <4 x float>* 96; CHECK-NEXT: store <4 x float> [[TMP19]], <4 x float>* [[TMP22]], align 4 97; CHECK-NEXT: [[INDEX_NEXT17]] = add i64 [[INDEX16]], 4 98; CHECK-NEXT: [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT17]], [[N_VEC15]] 99; CHECK-NEXT: br i1 [[TMP23]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]] 100; CHECK: vec.epilog.middle.block: 101; CHECK-NEXT: [[CMP_N18:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC15]] 102; CHECK-NEXT: br i1 [[CMP_N18]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 103; CHECK: vec.epilog.scalar.ph: 104; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC15]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ITER_CHECK]] ] 105; CHECK-NEXT: br label [[FOR_BODY:%.*]] 106; CHECK: for.body: 107; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 108; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[INDVARS_IV]] 109; CHECK-NEXT: [[TMP24:%.*]] = load float, float* [[ARRAYIDX]], align 4 110; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[INDVARS_IV]] 111; CHECK-NEXT: [[TMP25:%.*]] = load float, float* [[ARRAYIDX2]], align 4 112; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP24]], [[TMP25]] 113; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[INDVARS_IV]] 114; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4 115; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 116; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 117; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], [[LOOP12:!llvm.loop !.*]] 118; CHECK: for.end.loopexit.loopexit: 119; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 120; CHECK: for.end.loopexit: 121; CHECK-NEXT: br label [[FOR_END]] 122; CHECK: for.end: 123; CHECK-NEXT: ret void 124; 125; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f1( 126; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry: 127; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0 128; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 129; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader: 130; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64 131; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 132; CHECK-PROFITABLE-BY-DEFAULT: for.body: 133; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 134; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB:%.*]], i64 [[INDVARS_IV]] 135; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = load float, float* [[ARRAYIDX]], align 4 136; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC:%.*]], i64 [[INDVARS_IV]] 137; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = load float, float* [[ARRAYIDX2]], align 4 138; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ADD:%.*]] = fadd fast float [[TMP0]], [[TMP1]] 139; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA:%.*]], i64 [[INDVARS_IV]] 140; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4 141; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 142; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 143; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 144; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 145; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]] 146; CHECK-PROFITABLE-BY-DEFAULT: for.end: 147; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void 148; 149entry: 150 %cmp1 = icmp sgt i32 %N, 0 151 br i1 %cmp1, label %for.body.preheader, label %for.end 152 153for.body.preheader: ; preds = %entry 154 %wide.trip.count = zext i32 %N to i64 155 br label %for.body 156 157for.body: ; preds = %for.body.preheader, %for.body 158 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 159 %arrayidx = getelementptr inbounds float, float* %bb, i64 %indvars.iv 160 %0 = load float, float* %arrayidx, align 4 161 %arrayidx2 = getelementptr inbounds float, float* %cc, i64 %indvars.iv 162 %1 = load float, float* %arrayidx2, align 4 163 %add = fadd fast float %0, %1 164 %arrayidx4 = getelementptr inbounds float, float* %aa, i64 %indvars.iv 165 store float %add, float* %arrayidx4, align 4 166 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 167 %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count 168 br i1 %exitcond, label %for.body, label %for.end.loopexit 169 170for.end.loopexit: ; preds = %for.body 171 br label %for.end 172 173for.end: ; preds = %for.end.loopexit, %entry 174 ret void 175} 176 177define dso_local signext i32 @f2(float* noalias %A, float* noalias %B, i32 signext %n) { 178; CHECK-LABEL: @f2( 179; CHECK-NEXT: entry: 180; CHECK-NEXT: [[A1:%.*]] = bitcast float* [[A:%.*]] to i8* 181; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1 182; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]] 183; CHECK: iter.check: 184; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 185; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64 186; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 187; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] 188; CHECK: vector.scevcheck: 189; CHECK-NEXT: [[TMP1:%.*]] = add nsw i64 [[WIDE_TRIP_COUNT]], -1 190; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32 191; CHECK-NEXT: [[MUL:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 1, i32 [[TMP2]]) 192; CHECK-NEXT: [[MUL_RESULT:%.*]] = extractvalue { i32, i1 } [[MUL]], 0 193; CHECK-NEXT: [[MUL_OVERFLOW:%.*]] = extractvalue { i32, i1 } [[MUL]], 1 194; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[TMP0]], [[MUL_RESULT]] 195; CHECK-NEXT: [[TMP4:%.*]] = sub i32 [[TMP0]], [[MUL_RESULT]] 196; CHECK-NEXT: [[TMP5:%.*]] = icmp sgt i32 [[TMP4]], [[TMP0]] 197; CHECK-NEXT: [[TMP6:%.*]] = icmp slt i32 [[TMP3]], [[TMP0]] 198; CHECK-NEXT: [[TMP7:%.*]] = select i1 true, i1 [[TMP5]], i1 [[TMP6]] 199; CHECK-NEXT: [[TMP8:%.*]] = icmp ugt i64 [[TMP1]], 4294967295 200; CHECK-NEXT: [[TMP9:%.*]] = or i1 [[TMP7]], [[TMP8]] 201; CHECK-NEXT: [[TMP10:%.*]] = or i1 [[TMP9]], [[MUL_OVERFLOW]] 202; CHECK-NEXT: [[TMP11:%.*]] = or i1 false, [[TMP10]] 203; CHECK-NEXT: br i1 [[TMP11]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MEMCHECK:%.*]] 204; CHECK: vector.memcheck: 205; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr float, float* [[A]], i64 [[WIDE_TRIP_COUNT]] 206; CHECK-NEXT: [[SCEVGEP2:%.*]] = bitcast float* [[SCEVGEP]] to i8* 207; CHECK-NEXT: [[TMP12:%.*]] = sext i32 [[TMP0]] to i64 208; CHECK-NEXT: [[TMP13:%.*]] = add i64 [[TMP12]], 1 209; CHECK-NEXT: [[TMP14:%.*]] = sub i64 [[TMP13]], [[WIDE_TRIP_COUNT]] 210; CHECK-NEXT: [[SCEVGEP3:%.*]] = getelementptr float, float* [[B:%.*]], i64 [[TMP14]] 211; CHECK-NEXT: [[SCEVGEP34:%.*]] = bitcast float* [[SCEVGEP3]] to i8* 212; CHECK-NEXT: [[TMP15:%.*]] = add nsw i64 [[TMP12]], 1 213; CHECK-NEXT: [[SCEVGEP5:%.*]] = getelementptr float, float* [[B]], i64 [[TMP15]] 214; CHECK-NEXT: [[SCEVGEP56:%.*]] = bitcast float* [[SCEVGEP5]] to i8* 215; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult i8* [[A1]], [[SCEVGEP56]] 216; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult i8* [[SCEVGEP34]], [[SCEVGEP2]] 217; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] 218; CHECK-NEXT: [[MEMCHECK_CONFLICT:%.*]] = and i1 [[FOUND_CONFLICT]], true 219; CHECK-NEXT: br i1 [[MEMCHECK_CONFLICT]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 220; CHECK: vector.main.loop.iter.check: 221; CHECK-NEXT: [[MIN_ITERS_CHECK7:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 222; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK7]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 223; CHECK: vector.ph: 224; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 225; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]] 226; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 227; CHECK: vector.body: 228; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 229; CHECK-NEXT: [[TMP16:%.*]] = add i64 [[INDEX]], 0 230; CHECK-NEXT: [[OFFSET_IDX:%.*]] = trunc i64 [[INDEX]] to i32 231; CHECK-NEXT: [[TMP17:%.*]] = add i32 [[OFFSET_IDX]], 0 232; CHECK-NEXT: [[TMP18:%.*]] = xor i32 [[TMP17]], -1 233; CHECK-NEXT: [[TMP19:%.*]] = add i32 [[TMP18]], [[N]] 234; CHECK-NEXT: [[TMP20:%.*]] = sext i32 [[TMP19]] to i64 235; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[TMP20]] 236; CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds float, float* [[TMP21]], i32 0 237; CHECK-NEXT: [[TMP23:%.*]] = getelementptr inbounds float, float* [[TMP22]], i32 -3 238; CHECK-NEXT: [[TMP24:%.*]] = bitcast float* [[TMP23]] to <4 x float>* 239; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP24]], align 4, !alias.scope !13 240; CHECK-NEXT: [[REVERSE:%.*]] = shufflevector <4 x float> [[WIDE_LOAD]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0> 241; CHECK-NEXT: [[TMP25:%.*]] = fadd fast <4 x float> [[REVERSE]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00> 242; CHECK-NEXT: [[TMP26:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[TMP16]] 243; CHECK-NEXT: [[TMP27:%.*]] = getelementptr inbounds float, float* [[TMP26]], i32 0 244; CHECK-NEXT: [[TMP28:%.*]] = bitcast float* [[TMP27]] to <4 x float>* 245; CHECK-NEXT: store <4 x float> [[TMP25]], <4 x float>* [[TMP28]], align 4, !alias.scope !16, !noalias !13 246; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 247; CHECK-NEXT: [[TMP29:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 248; CHECK-NEXT: br i1 [[TMP29]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP18:!llvm.loop !.*]] 249; CHECK: middle.block: 250; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 251; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 252; CHECK: vec.epilog.iter.check: 253; CHECK-NEXT: [[IND_END13:%.*]] = trunc i64 [[N_VEC]] to i32 254; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 255; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 256; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 257; CHECK: vec.epilog.ph: 258; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 259; CHECK-NEXT: [[N_MOD_VF8:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 260; CHECK-NEXT: [[N_VEC9:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF8]] 261; CHECK-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC9]] to i32 262; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 263; CHECK: vec.epilog.vector.body: 264; CHECK-NEXT: [[INDEX10:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT11:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 265; CHECK-NEXT: [[TMP30:%.*]] = add i64 [[INDEX10]], 0 266; CHECK-NEXT: [[OFFSET_IDX15:%.*]] = trunc i64 [[INDEX10]] to i32 267; CHECK-NEXT: [[TMP31:%.*]] = add i32 [[OFFSET_IDX15]], 0 268; CHECK-NEXT: [[TMP32:%.*]] = xor i32 [[TMP31]], -1 269; CHECK-NEXT: [[TMP33:%.*]] = add i32 [[TMP32]], [[N]] 270; CHECK-NEXT: [[TMP34:%.*]] = sext i32 [[TMP33]] to i64 271; CHECK-NEXT: [[TMP35:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[TMP34]] 272; CHECK-NEXT: [[TMP36:%.*]] = getelementptr inbounds float, float* [[TMP35]], i32 0 273; CHECK-NEXT: [[TMP37:%.*]] = getelementptr inbounds float, float* [[TMP36]], i32 -3 274; CHECK-NEXT: [[TMP38:%.*]] = bitcast float* [[TMP37]] to <4 x float>* 275; CHECK-NEXT: [[WIDE_LOAD16:%.*]] = load <4 x float>, <4 x float>* [[TMP38]], align 4 276; CHECK-NEXT: [[REVERSE17:%.*]] = shufflevector <4 x float> [[WIDE_LOAD16]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0> 277; CHECK-NEXT: [[TMP39:%.*]] = fadd fast <4 x float> [[REVERSE17]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00> 278; CHECK-NEXT: [[TMP40:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[TMP30]] 279; CHECK-NEXT: [[TMP41:%.*]] = getelementptr inbounds float, float* [[TMP40]], i32 0 280; CHECK-NEXT: [[TMP42:%.*]] = bitcast float* [[TMP41]] to <4 x float>* 281; CHECK-NEXT: store <4 x float> [[TMP39]], <4 x float>* [[TMP42]], align 4 282; CHECK-NEXT: [[INDEX_NEXT11]] = add i64 [[INDEX10]], 4 283; CHECK-NEXT: [[TMP43:%.*]] = icmp eq i64 [[INDEX_NEXT11]], [[N_VEC9]] 284; CHECK-NEXT: br i1 [[TMP43]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], [[LOOP19:!llvm.loop !.*]] 285; CHECK: vec.epilog.middle.block: 286; CHECK-NEXT: [[CMP_N14:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC9]] 287; CHECK-NEXT: br i1 [[CMP_N14]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 288; CHECK: vec.epilog.scalar.ph: 289; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC9]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ITER_CHECK]] ] 290; CHECK-NEXT: [[BC_RESUME_VAL12:%.*]] = phi i32 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END13]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ITER_CHECK]] ] 291; CHECK-NEXT: br label [[FOR_BODY:%.*]] 292; CHECK: for.body: 293; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 294; CHECK-NEXT: [[I_014:%.*]] = phi i32 [ [[BC_RESUME_VAL12]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 295; CHECK-NEXT: [[TMP44:%.*]] = xor i32 [[I_014]], -1 296; CHECK-NEXT: [[SUB2:%.*]] = add i32 [[TMP44]], [[N]] 297; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64 298; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[IDXPROM]] 299; CHECK-NEXT: [[TMP45:%.*]] = load float, float* [[ARRAYIDX]], align 4 300; CHECK-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP45]], 1.000000e+00 301; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]] 302; CHECK-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4 303; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 304; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1 305; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 306; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], [[LOOP20:!llvm.loop !.*]] 307; CHECK: for.end.loopexit.loopexit: 308; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 309; CHECK: for.end.loopexit: 310; CHECK-NEXT: br label [[FOR_END]] 311; CHECK: for.end: 312; CHECK-NEXT: ret i32 0 313; 314; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f2( 315; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry: 316; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1 317; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 318; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader: 319; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 320; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64 321; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 322; CHECK-PROFITABLE-BY-DEFAULT: for.body: 323; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 324; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[I_014:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 325; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = xor i32 [[I_014]], -1 326; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[SUB2:%.*]] = add i32 [[TMP1]], [[N]] 327; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64 328; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[IDXPROM]] 329; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = load float, float* [[ARRAYIDX]], align 4 330; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP2]], 1.000000e+00 331; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDVARS_IV]] 332; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4 333; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 334; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1 335; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 336; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 337; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 338; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]] 339; CHECK-PROFITABLE-BY-DEFAULT: for.end: 340; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret i32 0 341; 342entry: 343 %cmp1 = icmp sgt i32 %n, 1 344 br i1 %cmp1, label %for.body.preheader, label %for.end 345 346for.body.preheader: ; preds = %entry 347 %0 = add i32 %n, -1 348 %wide.trip.count = zext i32 %0 to i64 349 br label %for.body 350 351for.body: ; preds = %for.body.preheader, %for.body 352 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 353 %i.014 = phi i32 [ 0, %for.body.preheader ], [ %inc, %for.body ] 354 %1 = xor i32 %i.014, -1 355 %sub2 = add i32 %1, %n 356 %idxprom = sext i32 %sub2 to i64 357 %arrayidx = getelementptr inbounds float, float* %B, i64 %idxprom 358 %2 = load float, float* %arrayidx, align 4 359 %conv3 = fadd fast float %2, 1.000000e+00 360 %arrayidx5 = getelementptr inbounds float, float* %A, i64 %indvars.iv 361 store float %conv3, float* %arrayidx5, align 4 362 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 363 %inc = add nuw nsw i32 %i.014, 1 364 %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count 365 br i1 %exitcond, label %for.body, label %for.end.loopexit 366 367for.end.loopexit: ; preds = %for.body 368 br label %for.end 369 370for.end: ; preds = %for.end.loopexit, %entry 371 ret i32 0 372} 373 374define void @f3(i8* noalias %A, i64 %n) { 375; CHECK-LABEL: @f3( 376; CHECK-NEXT: iter.check: 377; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4 378; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 379; CHECK: vector.main.loop.iter.check: 380; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4 381; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 382; CHECK: vector.ph: 383; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4 384; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] 385; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 386; CHECK: vector.body: 387; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 388; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 389; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]] 390; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0 391; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>* 392; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1 393; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 394; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 395; CHECK-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP21:!llvm.loop !.*]] 396; CHECK: middle.block: 397; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] 398; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 399; CHECK: vec.epilog.iter.check: 400; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]] 401; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 402; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 403; CHECK: vec.epilog.ph: 404; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 405; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 4 406; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]] 407; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 408; CHECK: vec.epilog.vector.body: 409; CHECK-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 410; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[INDEX4]], 0 411; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]] 412; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0 413; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <4 x i8>* 414; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP8]], align 1 415; CHECK-NEXT: [[INDEX_NEXT5]] = add i64 [[INDEX4]], 4 416; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]] 417; CHECK-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], [[LOOP22:!llvm.loop !.*]] 418; CHECK: vec.epilog.middle.block: 419; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[N_VEC3]] 420; CHECK-NEXT: br i1 [[CMP_N6]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 421; CHECK: vec.epilog.scalar.ph: 422; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ] 423; CHECK-NEXT: br label [[FOR_BODY:%.*]] 424; CHECK: for.body: 425; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] 426; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]] 427; CHECK-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1 428; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 429; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]] 430; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], [[LOOP23:!llvm.loop !.*]] 431; CHECK: for.end.loopexit.loopexit: 432; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 433; CHECK: for.end.loopexit: 434; CHECK-NEXT: br label [[FOR_END:%.*]] 435; CHECK: for.end: 436; CHECK-NEXT: ret void 437; 438; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f3( 439; CHECK-PROFITABLE-BY-DEFAULT-NEXT: iter.check: 440; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 2 441; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 442; CHECK-PROFITABLE-BY-DEFAULT: vector.main.loop.iter.check: 443; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4 444; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 445; CHECK-PROFITABLE-BY-DEFAULT: vector.ph: 446; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4 447; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] 448; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VECTOR_BODY:%.*]] 449; CHECK-PROFITABLE-BY-DEFAULT: vector.body: 450; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 451; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 452; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]] 453; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0 454; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>* 455; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1 456; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 457; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 458; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]] 459; CHECK-PROFITABLE-BY-DEFAULT: middle.block: 460; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] 461; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 462; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.iter.check: 463; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]] 464; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 2 465; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 466; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.ph: 467; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 468; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 2 469; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]] 470; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 471; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.vector.body: 472; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 473; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP5:%.*]] = add i64 [[INDEX4]], 0 474; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]] 475; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0 476; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <2 x i8>* 477; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <2 x i8> <i8 1, i8 1>, <2 x i8>* [[TMP8]], align 1 478; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT5]] = add i64 [[INDEX4]], 2 479; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]] 480; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], [[LOOP2:!llvm.loop !.*]] 481; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.middle.block: 482; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[N_VEC3]] 483; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N6]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 484; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.scalar.ph: 485; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ] 486; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 487; CHECK-PROFITABLE-BY-DEFAULT: for.body: 488; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] 489; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]] 490; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1 491; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 492; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]] 493; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], [[LOOP4:!llvm.loop !.*]] 494; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit.loopexit: 495; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END_LOOPEXIT]] 496; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 497; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END:%.*]] 498; CHECK-PROFITABLE-BY-DEFAULT: for.end: 499; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void 500; 501entry: 502 br label %for.body 503 504for.body: ; preds = %for.body.preheader, %for.body 505 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 506 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %iv 507 store i8 1, i8* %arrayidx, align 1 508 %iv.next = add nuw nsw i64 %iv, 1 509 %exitcond = icmp ne i64 %iv.next, %n 510 br i1 %exitcond, label %for.body, label %for.end.loopexit 511 512for.end.loopexit: ; preds = %for.body 513 br label %for.end 514 515for.end: ; preds = %for.end.loopexit, %entry 516 ret void 517} 518