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: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0 19; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]] 20; CHECK: iter.check: 21; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64 22; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 23; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 24; CHECK: vector.main.loop.iter.check: 25; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 26; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 27; CHECK: vector.ph: 28; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 29; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]] 30; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 31; CHECK: vector.body: 32; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 33; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 34; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[BB:%.*]], i64 [[TMP0]] 35; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0 36; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <4 x float>* 37; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP3]], align 4 38; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[CC:%.*]], i64 [[TMP0]] 39; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0 40; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <4 x float>* 41; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x float>, <4 x float>* [[TMP6]], align 4 42; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <4 x float> [[WIDE_LOAD]], [[WIDE_LOAD2]] 43; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds float, float* [[AA:%.*]], i64 [[TMP0]] 44; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, float* [[TMP8]], i32 0 45; CHECK-NEXT: [[TMP10:%.*]] = bitcast float* [[TMP9]] to <4 x float>* 46; CHECK-NEXT: store <4 x float> [[TMP7]], <4 x float>* [[TMP10]], align 4 47; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 48; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 49; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] 50; CHECK: middle.block: 51; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 52; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 53; CHECK: vec.epilog.iter.check: 54; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 55; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 56; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 57; CHECK: vec.epilog.ph: 58; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 59; CHECK-NEXT: [[N_MOD_VF3:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 60; CHECK-NEXT: [[N_VEC4:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF3]] 61; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 62; CHECK: vec.epilog.vector.body: 63; CHECK-NEXT: [[INDEX5:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT6:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 64; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[INDEX5]], 0 65; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[TMP12]] 66; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds float, float* [[TMP13]], i32 0 67; CHECK-NEXT: [[TMP15:%.*]] = bitcast float* [[TMP14]] to <4 x float>* 68; CHECK-NEXT: [[WIDE_LOAD8:%.*]] = load <4 x float>, <4 x float>* [[TMP15]], align 4 69; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[TMP12]] 70; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[TMP16]], i32 0 71; CHECK-NEXT: [[TMP18:%.*]] = bitcast float* [[TMP17]] to <4 x float>* 72; CHECK-NEXT: [[WIDE_LOAD9:%.*]] = load <4 x float>, <4 x float>* [[TMP18]], align 4 73; CHECK-NEXT: [[TMP19:%.*]] = fadd fast <4 x float> [[WIDE_LOAD8]], [[WIDE_LOAD9]] 74; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[TMP12]] 75; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds float, float* [[TMP20]], i32 0 76; CHECK-NEXT: [[TMP22:%.*]] = bitcast float* [[TMP21]] to <4 x float>* 77; CHECK-NEXT: store <4 x float> [[TMP19]], <4 x float>* [[TMP22]], align 4 78; CHECK-NEXT: [[INDEX_NEXT6]] = add nuw i64 [[INDEX5]], 4 79; CHECK-NEXT: [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT6]], [[N_VEC4]] 80; CHECK-NEXT: br i1 [[TMP23]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] 81; CHECK: vec.epilog.middle.block: 82; CHECK-NEXT: [[CMP_N7:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC4]] 83; CHECK-NEXT: br i1 [[CMP_N7]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 84; CHECK: vec.epilog.scalar.ph: 85; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC4]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK]] ] 86; CHECK-NEXT: br label [[FOR_BODY:%.*]] 87; CHECK: for.body: 88; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 89; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB]], i64 [[INDVARS_IV]] 90; CHECK-NEXT: [[TMP24:%.*]] = load float, float* [[ARRAYIDX]], align 4 91; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC]], i64 [[INDVARS_IV]] 92; CHECK-NEXT: [[TMP25:%.*]] = load float, float* [[ARRAYIDX2]], align 4 93; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP24]], [[TMP25]] 94; CHECK-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA]], i64 [[INDVARS_IV]] 95; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4 96; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 97; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 98; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], !llvm.loop [[LOOP4:![0-9]+]] 99; CHECK: for.end.loopexit.loopexit: 100; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 101; CHECK: for.end.loopexit: 102; CHECK-NEXT: br label [[FOR_END]] 103; CHECK: for.end: 104; CHECK-NEXT: ret void 105; 106; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f1( 107; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry: 108; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 0 109; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 110; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader: 111; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64 112; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 113; CHECK-PROFITABLE-BY-DEFAULT: for.body: 114; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 115; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[BB:%.*]], i64 [[INDVARS_IV]] 116; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = load float, float* [[ARRAYIDX]], align 4 117; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[CC:%.*]], i64 [[INDVARS_IV]] 118; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = load float, float* [[ARRAYIDX2]], align 4 119; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ADD:%.*]] = fadd fast float [[TMP0]], [[TMP1]] 120; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX4:%.*]] = getelementptr inbounds float, float* [[AA:%.*]], i64 [[INDVARS_IV]] 121; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[ADD]], float* [[ARRAYIDX4]], align 4 122; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 123; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 124; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 125; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 126; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]] 127; CHECK-PROFITABLE-BY-DEFAULT: for.end: 128; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void 129; 130entry: 131 %cmp1 = icmp sgt i32 %N, 0 132 br i1 %cmp1, label %for.body.preheader, label %for.end 133 134for.body.preheader: ; preds = %entry 135 %wide.trip.count = zext i32 %N to i64 136 br label %for.body 137 138for.body: ; preds = %for.body.preheader, %for.body 139 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 140 %arrayidx = getelementptr inbounds float, float* %bb, i64 %indvars.iv 141 %0 = load float, float* %arrayidx, align 4 142 %arrayidx2 = getelementptr inbounds float, float* %cc, i64 %indvars.iv 143 %1 = load float, float* %arrayidx2, align 4 144 %add = fadd fast float %0, %1 145 %arrayidx4 = getelementptr inbounds float, float* %aa, i64 %indvars.iv 146 store float %add, float* %arrayidx4, align 4 147 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 148 %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count 149 br i1 %exitcond, label %for.body, label %for.end.loopexit 150 151for.end.loopexit: ; preds = %for.body 152 br label %for.end 153 154for.end: ; preds = %for.end.loopexit, %entry 155 ret void 156} 157 158define dso_local signext i32 @f2(float* noalias %A, float* noalias %B, i32 signext %n) { 159; CHECK-LABEL: @f2( 160; CHECK-NEXT: entry: 161; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1 162; CHECK-NEXT: br i1 [[CMP1]], label [[ITER_CHECK:%.*]], label [[FOR_END:%.*]] 163; CHECK: iter.check: 164; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 165; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64 166; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 167; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] 168; CHECK: vector.scevcheck: 169; CHECK-NEXT: [[TMP1:%.*]] = add nsw i64 [[WIDE_TRIP_COUNT]], -1 170; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32 171; CHECK-NEXT: [[MUL:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 1, i32 [[TMP2]]) 172; CHECK-NEXT: [[MUL_RESULT:%.*]] = extractvalue { i32, i1 } [[MUL]], 0 173; CHECK-NEXT: [[MUL_OVERFLOW:%.*]] = extractvalue { i32, i1 } [[MUL]], 1 174; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[TMP0]], [[MUL_RESULT]] 175; CHECK-NEXT: [[TMP4:%.*]] = sub i32 [[TMP0]], [[MUL_RESULT]] 176; CHECK-NEXT: [[TMP5:%.*]] = icmp sgt i32 [[TMP4]], [[TMP0]] 177; CHECK-NEXT: [[TMP6:%.*]] = icmp slt i32 [[TMP3]], [[TMP0]] 178; CHECK-NEXT: [[TMP7:%.*]] = select i1 true, i1 [[TMP5]], i1 [[TMP6]] 179; CHECK-NEXT: [[TMP8:%.*]] = icmp ugt i64 [[TMP1]], 4294967295 180; CHECK-NEXT: [[TMP9:%.*]] = or i1 [[TMP7]], [[TMP8]] 181; CHECK-NEXT: [[TMP10:%.*]] = or i1 [[TMP9]], [[MUL_OVERFLOW]] 182; CHECK-NEXT: br i1 [[TMP10]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 183; CHECK: vector.main.loop.iter.check: 184; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[WIDE_TRIP_COUNT]], 4 185; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 186; CHECK: vector.ph: 187; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 188; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF]] 189; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 190; CHECK: vector.body: 191; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 192; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[INDEX]], 0 193; CHECK-NEXT: [[OFFSET_IDX:%.*]] = trunc i64 [[INDEX]] to i32 194; CHECK-NEXT: [[TMP13:%.*]] = add i32 [[OFFSET_IDX]], 0 195; CHECK-NEXT: [[TMP14:%.*]] = xor i32 [[TMP13]], -1 196; CHECK-NEXT: [[TMP15:%.*]] = add i32 [[TMP14]], [[N]] 197; CHECK-NEXT: [[TMP16:%.*]] = sext i32 [[TMP15]] to i64 198; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP16]] 199; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds float, float* [[TMP17]], i32 0 200; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds float, float* [[TMP18]], i32 -3 201; CHECK-NEXT: [[TMP20:%.*]] = bitcast float* [[TMP19]] to <4 x float>* 202; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP20]], align 4 203; CHECK-NEXT: [[REVERSE:%.*]] = shufflevector <4 x float> [[WIDE_LOAD]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0> 204; CHECK-NEXT: [[TMP21:%.*]] = fadd fast <4 x float> [[REVERSE]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00> 205; CHECK-NEXT: [[TMP22:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP12]] 206; CHECK-NEXT: [[TMP23:%.*]] = getelementptr inbounds float, float* [[TMP22]], i32 0 207; CHECK-NEXT: [[TMP24:%.*]] = bitcast float* [[TMP23]] to <4 x float>* 208; CHECK-NEXT: store <4 x float> [[TMP21]], <4 x float>* [[TMP24]], align 4 209; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 210; CHECK-NEXT: [[TMP25:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 211; CHECK-NEXT: br i1 [[TMP25]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]] 212; CHECK: middle.block: 213; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 214; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 215; CHECK: vec.epilog.iter.check: 216; CHECK-NEXT: [[IND_END7:%.*]] = trunc i64 [[N_VEC]] to i32 217; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_VEC]] 218; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 219; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 220; CHECK: vec.epilog.ph: 221; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 222; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[WIDE_TRIP_COUNT]], 4 223; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[WIDE_TRIP_COUNT]], [[N_MOD_VF2]] 224; CHECK-NEXT: [[IND_END:%.*]] = trunc i64 [[N_VEC3]] to i32 225; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 226; CHECK: vec.epilog.vector.body: 227; CHECK-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 228; CHECK-NEXT: [[TMP26:%.*]] = add i64 [[INDEX4]], 0 229; CHECK-NEXT: [[OFFSET_IDX9:%.*]] = trunc i64 [[INDEX4]] to i32 230; CHECK-NEXT: [[TMP27:%.*]] = add i32 [[OFFSET_IDX9]], 0 231; CHECK-NEXT: [[TMP28:%.*]] = xor i32 [[TMP27]], -1 232; CHECK-NEXT: [[TMP29:%.*]] = add i32 [[TMP28]], [[N]] 233; CHECK-NEXT: [[TMP30:%.*]] = sext i32 [[TMP29]] to i64 234; CHECK-NEXT: [[TMP31:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[TMP30]] 235; CHECK-NEXT: [[TMP32:%.*]] = getelementptr inbounds float, float* [[TMP31]], i32 0 236; CHECK-NEXT: [[TMP33:%.*]] = getelementptr inbounds float, float* [[TMP32]], i32 -3 237; CHECK-NEXT: [[TMP34:%.*]] = bitcast float* [[TMP33]] to <4 x float>* 238; CHECK-NEXT: [[WIDE_LOAD10:%.*]] = load <4 x float>, <4 x float>* [[TMP34]], align 4 239; CHECK-NEXT: [[REVERSE11:%.*]] = shufflevector <4 x float> [[WIDE_LOAD10]], <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0> 240; CHECK-NEXT: [[TMP35:%.*]] = fadd fast <4 x float> [[REVERSE11]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00> 241; CHECK-NEXT: [[TMP36:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[TMP26]] 242; CHECK-NEXT: [[TMP37:%.*]] = getelementptr inbounds float, float* [[TMP36]], i32 0 243; CHECK-NEXT: [[TMP38:%.*]] = bitcast float* [[TMP37]] to <4 x float>* 244; CHECK-NEXT: store <4 x float> [[TMP35]], <4 x float>* [[TMP38]], align 4 245; CHECK-NEXT: [[INDEX_NEXT5]] = add nuw i64 [[INDEX4]], 4 246; CHECK-NEXT: [[TMP39:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]] 247; CHECK-NEXT: br i1 [[TMP39]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]] 248; CHECK: vec.epilog.middle.block: 249; CHECK-NEXT: [[CMP_N8:%.*]] = icmp eq i64 [[WIDE_TRIP_COUNT]], [[N_VEC3]] 250; CHECK-NEXT: br i1 [[CMP_N8]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 251; CHECK: vec.epilog.scalar.ph: 252; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK]] ] 253; CHECK-NEXT: [[BC_RESUME_VAL6:%.*]] = phi i32 [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END7]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[ITER_CHECK]] ] 254; CHECK-NEXT: br label [[FOR_BODY:%.*]] 255; CHECK: for.body: 256; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 257; CHECK-NEXT: [[I_014:%.*]] = phi i32 [ [[BC_RESUME_VAL6]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 258; CHECK-NEXT: [[TMP40:%.*]] = xor i32 [[I_014]], -1 259; CHECK-NEXT: [[SUB2:%.*]] = add i32 [[TMP40]], [[N]] 260; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64 261; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[IDXPROM]] 262; CHECK-NEXT: [[TMP41:%.*]] = load float, float* [[ARRAYIDX]], align 4 263; CHECK-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP41]], 1.000000e+00 264; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]] 265; CHECK-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4 266; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 267; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1 268; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 269; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], !llvm.loop [[LOOP7:![0-9]+]] 270; CHECK: for.end.loopexit.loopexit: 271; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 272; CHECK: for.end.loopexit: 273; CHECK-NEXT: br label [[FOR_END]] 274; CHECK: for.end: 275; CHECK-NEXT: ret i32 0 276; 277; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f2( 278; CHECK-PROFITABLE-BY-DEFAULT-NEXT: entry: 279; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[N:%.*]], 1 280; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]] 281; CHECK-PROFITABLE-BY-DEFAULT: for.body.preheader: 282; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 283; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[TMP0]] to i64 284; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 285; CHECK-PROFITABLE-BY-DEFAULT: for.body: 286; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 287; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[I_014:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC:%.*]], [[FOR_BODY]] ] 288; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = xor i32 [[I_014]], -1 289; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[SUB2:%.*]] = add i32 [[TMP1]], [[N]] 290; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IDXPROM:%.*]] = sext i32 [[SUB2]] to i64 291; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[IDXPROM]] 292; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = load float, float* [[ARRAYIDX]], align 4 293; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CONV3:%.*]] = fadd fast float [[TMP2]], 1.000000e+00 294; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[INDVARS_IV]] 295; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store float [[CONV3]], float* [[ARRAYIDX5]], align 4 296; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 297; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INC]] = add nuw nsw i32 [[I_014]], 1 298; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]] 299; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]] 300; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 301; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END]] 302; CHECK-PROFITABLE-BY-DEFAULT: for.end: 303; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret i32 0 304; 305entry: 306 %cmp1 = icmp sgt i32 %n, 1 307 br i1 %cmp1, label %for.body.preheader, label %for.end 308 309for.body.preheader: ; preds = %entry 310 %0 = add i32 %n, -1 311 %wide.trip.count = zext i32 %0 to i64 312 br label %for.body 313 314for.body: ; preds = %for.body.preheader, %for.body 315 %indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] 316 %i.014 = phi i32 [ 0, %for.body.preheader ], [ %inc, %for.body ] 317 %1 = xor i32 %i.014, -1 318 %sub2 = add i32 %1, %n 319 %idxprom = sext i32 %sub2 to i64 320 %arrayidx = getelementptr inbounds float, float* %B, i64 %idxprom 321 %2 = load float, float* %arrayidx, align 4 322 %conv3 = fadd fast float %2, 1.000000e+00 323 %arrayidx5 = getelementptr inbounds float, float* %A, i64 %indvars.iv 324 store float %conv3, float* %arrayidx5, align 4 325 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 326 %inc = add nuw nsw i32 %i.014, 1 327 %exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count 328 br i1 %exitcond, label %for.body, label %for.end.loopexit 329 330for.end.loopexit: ; preds = %for.body 331 br label %for.end 332 333for.end: ; preds = %for.end.loopexit, %entry 334 ret i32 0 335} 336 337define void @f3(i8* noalias %A, i64 %n) { 338; CHECK-LABEL: @f3( 339; CHECK-NEXT: iter.check: 340; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 4 341; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 342; CHECK: vector.main.loop.iter.check: 343; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4 344; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 345; CHECK: vector.ph: 346; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4 347; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] 348; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 349; CHECK: vector.body: 350; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 351; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 352; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]] 353; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0 354; CHECK-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>* 355; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1 356; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 357; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 358; CHECK-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] 359; CHECK: middle.block: 360; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] 361; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 362; CHECK: vec.epilog.iter.check: 363; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]] 364; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4 365; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 366; CHECK: vec.epilog.ph: 367; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 368; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 4 369; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]] 370; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 371; CHECK: vec.epilog.vector.body: 372; CHECK-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 373; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[INDEX4]], 0 374; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]] 375; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0 376; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <4 x i8>* 377; CHECK-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP8]], align 1 378; CHECK-NEXT: [[INDEX_NEXT5]] = add nuw i64 [[INDEX4]], 4 379; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]] 380; CHECK-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]] 381; CHECK: vec.epilog.middle.block: 382; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[N_VEC3]] 383; CHECK-NEXT: br i1 [[CMP_N6]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 384; CHECK: vec.epilog.scalar.ph: 385; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ] 386; CHECK-NEXT: br label [[FOR_BODY:%.*]] 387; CHECK: for.body: 388; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] 389; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]] 390; CHECK-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1 391; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 392; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]] 393; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], !llvm.loop [[LOOP10:![0-9]+]] 394; CHECK: for.end.loopexit.loopexit: 395; CHECK-NEXT: br label [[FOR_END_LOOPEXIT]] 396; CHECK: for.end.loopexit: 397; CHECK-NEXT: br label [[FOR_END:%.*]] 398; CHECK: for.end: 399; CHECK-NEXT: ret void 400; 401; CHECK-PROFITABLE-BY-DEFAULT-LABEL: @f3( 402; CHECK-PROFITABLE-BY-DEFAULT-NEXT: iter.check: 403; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], 2 404; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]] 405; CHECK-PROFITABLE-BY-DEFAULT: vector.main.loop.iter.check: 406; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], 4 407; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]] 408; CHECK-PROFITABLE-BY-DEFAULT: vector.ph: 409; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 4 410; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] 411; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VECTOR_BODY:%.*]] 412; CHECK-PROFITABLE-BY-DEFAULT: vector.body: 413; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 414; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 415; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[A:%.*]], i64 [[TMP0]] 416; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0 417; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to <4 x i8>* 418; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <4 x i8> <i8 1, i8 1, i8 1, i8 1>, <4 x i8>* [[TMP3]], align 1 419; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 420; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 421; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] 422; CHECK-PROFITABLE-BY-DEFAULT: middle.block: 423; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] 424; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N]], label [[FOR_END_LOOPEXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]] 425; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.iter.check: 426; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]] 427; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 2 428; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]] 429; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.ph: 430; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ] 431; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 2 432; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]] 433; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]] 434; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.vector.body: 435; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ] 436; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP5:%.*]] = add i64 [[INDEX4]], 0 437; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP6:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[TMP5]] 438; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP6]], i32 0 439; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP8:%.*]] = bitcast i8* [[TMP7]] to <2 x i8>* 440; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store <2 x i8> <i8 1, i8 1>, <2 x i8>* [[TMP8]], align 1 441; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[INDEX_NEXT5]] = add nuw i64 [[INDEX4]], 2 442; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]] 443; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[TMP9]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] 444; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.middle.block: 445; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[N_VEC3]] 446; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[CMP_N6]], label [[FOR_END_LOOPEXIT_LOOPEXIT:%.*]], label [[VEC_EPILOG_SCALAR_PH]] 447; CHECK-PROFITABLE-BY-DEFAULT: vec.epilog.scalar.ph: 448; 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:%.*]] ] 449; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_BODY:%.*]] 450; CHECK-PROFITABLE-BY-DEFAULT: for.body: 451; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] 452; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, i8* [[A]], i64 [[IV]] 453; CHECK-PROFITABLE-BY-DEFAULT-NEXT: store i8 1, i8* [[ARRAYIDX]], align 1 454; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 455; CHECK-PROFITABLE-BY-DEFAULT-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], [[N]] 456; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT_LOOPEXIT]], !llvm.loop [[LOOP4:![0-9]+]] 457; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit.loopexit: 458; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END_LOOPEXIT]] 459; CHECK-PROFITABLE-BY-DEFAULT: for.end.loopexit: 460; CHECK-PROFITABLE-BY-DEFAULT-NEXT: br label [[FOR_END:%.*]] 461; CHECK-PROFITABLE-BY-DEFAULT: for.end: 462; CHECK-PROFITABLE-BY-DEFAULT-NEXT: ret void 463; 464entry: 465 br label %for.body 466 467for.body: ; preds = %for.body.preheader, %for.body 468 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 469 %arrayidx = getelementptr inbounds i8, i8* %A, i64 %iv 470 store i8 1, i8* %arrayidx, align 1 471 %iv.next = add nuw nsw i64 %iv, 1 472 %exitcond = icmp ne i64 %iv.next, %n 473 br i1 %exitcond, label %for.body, label %for.end.loopexit 474 475for.end.loopexit: ; preds = %for.body 476 br label %for.end 477 478for.end: ; preds = %for.end.loopexit, %entry 479 ret void 480} 481