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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; REQUIRES: asserts3; RUN: opt < %s -passes='function(loop-vectorize,instcombine)' -force-vector-width=2 -force-vector-interleave=1 -debug-only=loop-vectorize -disable-output -print-after=instcombine 2>&1 | FileCheck %s4 5target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"6 7; CHECK-LABEL: phi_two_incoming_values8; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]9; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ]10;11define void @phi_two_incoming_values(ptr noalias %a, ptr noalias %b, i64 %n) {12; CHECK-LABEL: define void @phi_two_incoming_values(13; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) {14; CHECK-NEXT: [[ENTRY:.*]]:15; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[N]], 116; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 217; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]18; CHECK: [[VECTOR_PH]]:19; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP0]], -220; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]21; CHECK: [[VECTOR_BODY]]:22; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]23; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDEX]]24; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, ptr [[TMP2]], align 425; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[INDEX]]26; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt <2 x i32> [[WIDE_LOAD]], zeroinitializer27; CHECK-NEXT: [[TMP5:%.*]] = zext <2 x i1> [[TMP4]] to <2 x i32>28; CHECK-NEXT: [[PREDPHI:%.*]] = add <2 x i32> [[WIDE_LOAD]], [[TMP5]]29; CHECK-NEXT: store <2 x i32> [[PREDPHI]], ptr [[TMP3]], align 430; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 231; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]32; CHECK-NEXT: br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]33; CHECK: [[MIDDLE_BLOCK]]:34; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]35; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_END:.*]], label %[[SCALAR_PH]]36; CHECK: [[SCALAR_PH]]:37; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]38; CHECK-NEXT: br label %[[FOR_BODY:.*]]39; CHECK: [[FOR_BODY]]:40; CHECK-NEXT: [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], %[[IF_END:.*]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]41; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]42; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP0]], align 443; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[I]]44; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[TMP2]], 045; CHECK-NEXT: br i1 [[TMP4]], label %[[IF_THEN:.*]], label %[[IF_END]]46; CHECK: [[IF_THEN]]:47; CHECK-NEXT: [[TMP5:%.*]] = add nuw i32 [[TMP2]], 148; CHECK-NEXT: br label %[[IF_END]]49; CHECK: [[IF_END]]:50; CHECK-NEXT: [[TMP6:%.*]] = phi i32 [ [[TMP2]], %[[FOR_BODY]] ], [ [[TMP5]], %[[IF_THEN]] ]51; CHECK-NEXT: store i32 [[TMP6]], ptr [[TMP3]], align 452; CHECK-NEXT: [[I_NEXT]] = add i64 [[I]], 153; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[I]], [[N]]54; CHECK-NEXT: br i1 [[COND]], label %[[FOR_END]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]55; CHECK: [[FOR_END]]:56; CHECK-NEXT: ret void57;58entry:59 br label %for.body60 61for.body:62 %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]63 %tmp0 = getelementptr inbounds i32, ptr %a, i64 %i64 %tmp1 = load i32, ptr %tmp0, align 465 %tmp2 = getelementptr inbounds i32, ptr %b, i64 %i66 %tmp3 = icmp sgt i32 %tmp1, 067 br i1 %tmp3, label %if.then, label %if.end68 69if.then:70 %tmp4 = add i32 %tmp1, 171 br label %if.end72 73if.end:74 %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ]75 store i32 %tmp5, ptr %tmp2, align 476 %i.next = add i64 %i, 177 %cond = icmp eq i64 %i, %n78 br i1 %cond, label %for.end, label %for.body79 80for.end:81 ret void82}83 84; CHECK-LABEL: phi_three_incoming_values85; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]86; CHECK: LV: Found an estimated cost of 2 for VF 2 For instruction: %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ]87;88define void @phi_three_incoming_values(ptr noalias %a, ptr noalias %b, i64 %n) {89; CHECK-LABEL: define void @phi_three_incoming_values(90; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) {91; CHECK-NEXT: [[ENTRY:.*]]:92; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[N]], 193; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 294; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]95; CHECK: [[VECTOR_PH]]:96; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[TMP0]], -297; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]98; CHECK: [[VECTOR_BODY]]:99; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]100; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDEX]]101; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, ptr [[TMP3]], align 4102; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[INDEX]]103; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <2 x i32>, ptr [[TMP4]], align 4104; CHECK-NEXT: [[TMP5:%.*]] = icmp sgt <2 x i32> [[WIDE_LOAD]], [[WIDE_LOAD2]]105; CHECK-NEXT: [[TMP6:%.*]] = icmp sgt <2 x i32> [[WIDE_LOAD]], splat (i32 19)106; CHECK-NEXT: [[TMP7:%.*]] = icmp slt <2 x i32> [[WIDE_LOAD2]], splat (i32 4)107; CHECK-NEXT: [[TMP8:%.*]] = select <2 x i1> [[TMP7]], <2 x i32> splat (i32 4), <2 x i32> splat (i32 5)108; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP6]], <2 x i32> splat (i32 3), <2 x i32> [[TMP8]]109; CHECK-NEXT: [[PREDPHI3:%.*]] = select <2 x i1> [[TMP5]], <2 x i32> [[PREDPHI]], <2 x i32> splat (i32 9)110; CHECK-NEXT: store <2 x i32> [[PREDPHI3]], ptr [[TMP3]], align 4111; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2112; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]113; CHECK-NEXT: br i1 [[TMP9]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]114; CHECK: [[MIDDLE_BLOCK]]:115; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]116; CHECK-NEXT: br i1 [[CMP_N]], label %[[FOR_END:.*]], label %[[SCALAR_PH]]117; CHECK: [[SCALAR_PH]]:118; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]119; CHECK-NEXT: br label %[[FOR_BODY:.*]]120; CHECK: [[FOR_BODY]]:121; CHECK-NEXT: [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], %[[IF_END:.*]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]122; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]123; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP0]], align 4124; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[I]]125; CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[TMP4]], align 4126; CHECK-NEXT: [[TMP6:%.*]] = icmp sgt i32 [[TMP3]], [[TMP5]]127; CHECK-NEXT: br i1 [[TMP6]], label %[[IF_THEN:.*]], label %[[IF_END]]128; CHECK: [[IF_THEN]]:129; CHECK-NEXT: [[TMP7:%.*]] = icmp sgt i32 [[TMP3]], 19130; CHECK-NEXT: br i1 [[TMP7]], label %[[IF_END]], label %[[IF_ELSE:.*]]131; CHECK: [[IF_ELSE]]:132; CHECK-NEXT: [[TMP8:%.*]] = icmp slt i32 [[TMP5]], 4133; CHECK-NEXT: [[TMP9:%.*]] = select i1 [[TMP8]], i32 4, i32 5134; CHECK-NEXT: br label %[[IF_END]]135; CHECK: [[IF_END]]:136; CHECK-NEXT: [[TMP10:%.*]] = phi i32 [ 9, %[[FOR_BODY]] ], [ 3, %[[IF_THEN]] ], [ [[TMP9]], %[[IF_ELSE]] ]137; CHECK-NEXT: store i32 [[TMP10]], ptr [[TMP0]], align 4138; CHECK-NEXT: [[I_NEXT]] = add i64 [[I]], 1139; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[I]], [[N]]140; CHECK-NEXT: br i1 [[COND]], label %[[FOR_END]], label %[[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]141; CHECK: [[FOR_END]]:142; CHECK-NEXT: ret void143;144entry:145 br label %for.body146 147for.body:148 %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]149 %tmp0 = getelementptr inbounds i32, ptr %a, i64 %i150 %tmp1 = load i32, ptr %tmp0, align 4151 %tmp2 = getelementptr inbounds i32, ptr %b, i64 %i152 %tmp3 = load i32, ptr %tmp2, align 4153 %tmp4 = icmp sgt i32 %tmp1, %tmp3154 br i1 %tmp4, label %if.then, label %if.end155 156if.then:157 %tmp5 = icmp sgt i32 %tmp1, 19158 br i1 %tmp5, label %if.end, label %if.else159 160if.else:161 %tmp6 = icmp slt i32 %tmp3, 4162 %tmp7 = select i1 %tmp6, i32 4, i32 5163 br label %if.end164 165if.end:166 %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ]167 store i32 %tmp8, ptr %tmp0, align 4168 %i.next = add i64 %i, 1169 %cond = icmp eq i64 %i, %n170 br i1 %cond, label %for.end, label %for.body171 172for.end:173 ret void174}175 176; Test case for https://github.com/llvm/llvm-project/issues/113794.177define i32 @red_phi_0(i32 %start, ptr %src) {178; CHECK-LABEL: define i32 @red_phi_0(179; CHECK-SAME: i32 [[START:%.*]], ptr [[SRC:%.*]]) {180; CHECK-NEXT: [[ENTRY:.*:]]181; CHECK-NEXT: br label %[[VECTOR_PH:.*]]182; CHECK: [[VECTOR_PH]]:183; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]184; CHECK: [[VECTOR_BODY]]:185; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]186; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2187; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 [[INDEX_NEXT]], 100188; CHECK-NEXT: br i1 [[TMP1]], label %[[SCALAR_PH1:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]189; CHECK: [[SCALAR_PH1]]:190; CHECK-NEXT: br label %[[EXIT:.*]]191; CHECK: [[EXIT]]:192; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x i32> <i32 poison, i32 0>, i32 [[START]], i64 0193; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> [[TMP0]])194; CHECK-NEXT: ret i32 [[TMP2]]195;196entry:197 br label %loop198 199loop:200 %red = phi i32 [ %start, %entry ], [ %red.next, %loop ]201 %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]202 %red.next = add i32 0, %red203 %iv.next = add i64 %iv, 1204 %exitcond.not = icmp eq i64 %iv.next, 100205 br i1 %exitcond.not, label %exit, label %loop206 207exit:208 %res = phi i32 [ %red.next, %loop ]209 ret i32 %res210}211