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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 62; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -S %s | FileCheck %s --check-prefix=UNROLL-NO-IC3; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s | FileCheck %s --check-prefix=UNROLL-NO-VF4; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s --check-prefix=SINK-AFTER5 6; Test case for https://github.com/llvm/llvm-project/issues/95520.7define i32 @recurence_uniform_load(ptr %src, ptr noalias %dst, i64 %n) {8; UNROLL-NO-IC-LABEL: define i32 @recurence_uniform_load(9; UNROLL-NO-IC-SAME: ptr [[SRC:%.*]], ptr noalias [[DST:%.*]], i64 [[N:%.*]]) {10; UNROLL-NO-IC-NEXT: [[ENTRY:.*]]:11; UNROLL-NO-IC-NEXT: [[TMP0:%.*]] = add i64 [[N]], 112; UNROLL-NO-IC-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 813; UNROLL-NO-IC-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]14; UNROLL-NO-IC: [[VECTOR_PH]]:15; UNROLL-NO-IC-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP0]], 816; UNROLL-NO-IC-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP0]], [[N_MOD_VF]]17; UNROLL-NO-IC-NEXT: br label %[[VECTOR_BODY:.*]]18; UNROLL-NO-IC: [[VECTOR_BODY]]:19; UNROLL-NO-IC-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]20; UNROLL-NO-IC-NEXT: [[TMP1:%.*]] = load i32, ptr [[SRC]], align 421; UNROLL-NO-IC-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 822; UNROLL-NO-IC-NEXT: [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]23; UNROLL-NO-IC-NEXT: br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]24; UNROLL-NO-IC: [[MIDDLE_BLOCK]]:25; UNROLL-NO-IC-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]26; UNROLL-NO-IC-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]27; UNROLL-NO-IC: [[SCALAR_PH]]:28; UNROLL-NO-IC-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]29; UNROLL-NO-IC-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[TMP1]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]30; UNROLL-NO-IC-NEXT: br label %[[LOOP:.*]]31; UNROLL-NO-IC: [[LOOP]]:32; UNROLL-NO-IC-NEXT: [[PHI:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[LOOP]] ]33; UNROLL-NO-IC-NEXT: [[RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], %[[SCALAR_PH]] ], [ [[LOAD:%.*]], %[[LOOP]] ]34; UNROLL-NO-IC-NEXT: [[ADD]] = add i64 [[PHI]], 135; UNROLL-NO-IC-NEXT: [[LOAD]] = load i32, ptr [[SRC]], align 436; UNROLL-NO-IC-NEXT: [[ICMP:%.*]] = icmp ult i64 [[PHI]], [[N]]37; UNROLL-NO-IC-NEXT: br i1 [[ICMP]], label %[[LOOP]], label %[[EXIT]], !llvm.loop [[LOOP3:![0-9]+]]38; UNROLL-NO-IC: [[EXIT]]:39; UNROLL-NO-IC-NEXT: [[RECUR_LCSSA:%.*]] = phi i32 [ [[RECUR]], %[[LOOP]] ], [ [[TMP1]], %[[MIDDLE_BLOCK]] ]40; UNROLL-NO-IC-NEXT: ret i32 [[RECUR_LCSSA]]41;42; UNROLL-NO-VF-LABEL: define i32 @recurence_uniform_load(43; UNROLL-NO-VF-SAME: ptr [[SRC:%.*]], ptr noalias [[DST:%.*]], i64 [[N:%.*]]) {44; UNROLL-NO-VF-NEXT: [[ENTRY:.*]]:45; UNROLL-NO-VF-NEXT: [[TMP1:%.*]] = add i64 [[N]], 146; UNROLL-NO-VF-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP1]], 247; UNROLL-NO-VF-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]48; UNROLL-NO-VF: [[VECTOR_PH]]:49; UNROLL-NO-VF-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP1]], 250; UNROLL-NO-VF-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP1]], [[N_MOD_VF]]51; UNROLL-NO-VF-NEXT: br label %[[VECTOR_BODY:.*]]52; UNROLL-NO-VF: [[VECTOR_BODY]]:53; UNROLL-NO-VF-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]54; UNROLL-NO-VF-NEXT: [[TMP0:%.*]] = load i32, ptr [[SRC]], align 455; UNROLL-NO-VF-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 256; UNROLL-NO-VF-NEXT: [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]57; UNROLL-NO-VF-NEXT: br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]58; UNROLL-NO-VF: [[MIDDLE_BLOCK]]:59; UNROLL-NO-VF-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]60; UNROLL-NO-VF-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]61; UNROLL-NO-VF: [[SCALAR_PH]]:62; UNROLL-NO-VF-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]63; UNROLL-NO-VF-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[TMP0]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]64; UNROLL-NO-VF-NEXT: br label %[[LOOP:.*]]65; UNROLL-NO-VF: [[LOOP]]:66; UNROLL-NO-VF-NEXT: [[PHI:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[LOOP]] ]67; UNROLL-NO-VF-NEXT: [[RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], %[[SCALAR_PH]] ], [ [[LOAD:%.*]], %[[LOOP]] ]68; UNROLL-NO-VF-NEXT: [[ADD]] = add i64 [[PHI]], 169; UNROLL-NO-VF-NEXT: [[LOAD]] = load i32, ptr [[SRC]], align 470; UNROLL-NO-VF-NEXT: [[ICMP:%.*]] = icmp ult i64 [[PHI]], [[N]]71; UNROLL-NO-VF-NEXT: br i1 [[ICMP]], label %[[LOOP]], label %[[EXIT]], !llvm.loop [[LOOP3:![0-9]+]]72; UNROLL-NO-VF: [[EXIT]]:73; UNROLL-NO-VF-NEXT: [[RECUR_LCSSA:%.*]] = phi i32 [ [[RECUR]], %[[LOOP]] ], [ [[TMP0]], %[[MIDDLE_BLOCK]] ]74; UNROLL-NO-VF-NEXT: ret i32 [[RECUR_LCSSA]]75;76; SINK-AFTER-LABEL: define i32 @recurence_uniform_load(77; SINK-AFTER-SAME: ptr [[SRC:%.*]], ptr noalias [[DST:%.*]], i64 [[N:%.*]]) {78; SINK-AFTER-NEXT: [[ENTRY:.*]]:79; SINK-AFTER-NEXT: [[TMP0:%.*]] = add i64 [[N]], 180; SINK-AFTER-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 481; SINK-AFTER-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]82; SINK-AFTER: [[VECTOR_PH]]:83; SINK-AFTER-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP0]], 484; SINK-AFTER-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP0]], [[N_MOD_VF]]85; SINK-AFTER-NEXT: br label %[[VECTOR_BODY:.*]]86; SINK-AFTER: [[VECTOR_BODY]]:87; SINK-AFTER-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]88; SINK-AFTER-NEXT: [[TMP1:%.*]] = load i32, ptr [[SRC]], align 489; SINK-AFTER-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 490; SINK-AFTER-NEXT: [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]91; SINK-AFTER-NEXT: br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]92; SINK-AFTER: [[MIDDLE_BLOCK]]:93; SINK-AFTER-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]94; SINK-AFTER-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]95; SINK-AFTER: [[SCALAR_PH]]:96; SINK-AFTER-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]97; SINK-AFTER-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i32 [ [[TMP1]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]98; SINK-AFTER-NEXT: br label %[[LOOP:.*]]99; SINK-AFTER: [[LOOP]]:100; SINK-AFTER-NEXT: [[PHI:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[LOOP]] ]101; SINK-AFTER-NEXT: [[RECUR:%.*]] = phi i32 [ [[SCALAR_RECUR_INIT]], %[[SCALAR_PH]] ], [ [[LOAD:%.*]], %[[LOOP]] ]102; SINK-AFTER-NEXT: [[ADD]] = add i64 [[PHI]], 1103; SINK-AFTER-NEXT: [[LOAD]] = load i32, ptr [[SRC]], align 4104; SINK-AFTER-NEXT: [[ICMP:%.*]] = icmp ult i64 [[PHI]], [[N]]105; SINK-AFTER-NEXT: br i1 [[ICMP]], label %[[LOOP]], label %[[EXIT]], !llvm.loop [[LOOP3:![0-9]+]]106; SINK-AFTER: [[EXIT]]:107; SINK-AFTER-NEXT: [[RECUR_LCSSA:%.*]] = phi i32 [ [[RECUR]], %[[LOOP]] ], [ [[TMP1]], %[[MIDDLE_BLOCK]] ]108; SINK-AFTER-NEXT: ret i32 [[RECUR_LCSSA]]109;110entry:111 br label %loop112 113loop:114 %phi = phi i64 [ 0, %entry ], [ %add, %loop ]115 %recur = phi i32 [ 0, %entry ], [ %load, %loop ]116 %add = add i64 %phi, 1117 %load = load i32, ptr %src, align 4118 %icmp = icmp ult i64 %phi, %n119 br i1 %icmp, label %loop, label %exit120 121exit:122 ret i32 %recur123}124 125; Test for https://github.com/llvm/llvm-project/issues/158319. The recurrence126; phi can be removed.127define i16 @for_phi_removed(ptr %src) {128; UNROLL-NO-IC-LABEL: define i16 @for_phi_removed(129; UNROLL-NO-IC-SAME: ptr [[SRC:%.*]]) {130; UNROLL-NO-IC-NEXT: [[ENTRY:.*:]]131; UNROLL-NO-IC-NEXT: br label %[[VECTOR_PH:.*]]132; UNROLL-NO-IC: [[VECTOR_PH]]:133; UNROLL-NO-IC-NEXT: br label %[[VECTOR_BODY:.*]]134; UNROLL-NO-IC: [[VECTOR_BODY]]:135; UNROLL-NO-IC-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]136; UNROLL-NO-IC-NEXT: [[TMP0:%.*]] = load i32, ptr [[SRC]], align 4137; UNROLL-NO-IC-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0138; UNROLL-NO-IC-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i16 1, i16 0139; UNROLL-NO-IC-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 8140; UNROLL-NO-IC-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 104141; UNROLL-NO-IC-NEXT: br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]142; UNROLL-NO-IC: [[MIDDLE_BLOCK]]:143; UNROLL-NO-IC-NEXT: br label %[[SCALAR_PH:.*]]144; UNROLL-NO-IC: [[SCALAR_PH]]:145; UNROLL-NO-IC-NEXT: br label %[[LOOP:.*]]146; UNROLL-NO-IC: [[LOOP]]:147; UNROLL-NO-IC-NEXT: [[IV:%.*]] = phi i16 [ 104, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]148; UNROLL-NO-IC-NEXT: [[P:%.*]] = phi i16 [ [[TMP2]], %[[SCALAR_PH]] ], [ [[SEL:%.*]], %[[LOOP]] ]149; UNROLL-NO-IC-NEXT: [[L:%.*]] = load i32, ptr [[SRC]], align 4150; UNROLL-NO-IC-NEXT: [[C:%.*]] = icmp eq i32 [[L]], 0151; UNROLL-NO-IC-NEXT: [[SEL]] = select i1 [[C]], i16 1, i16 0152; UNROLL-NO-IC-NEXT: [[IV_NEXT]] = add i16 [[IV]], 1153; UNROLL-NO-IC-NEXT: [[EC:%.*]] = icmp eq i16 [[IV_NEXT]], 111154; UNROLL-NO-IC-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]155; UNROLL-NO-IC: [[EXIT]]:156; UNROLL-NO-IC-NEXT: [[P_LCSSA:%.*]] = phi i16 [ [[P]], %[[LOOP]] ]157; UNROLL-NO-IC-NEXT: ret i16 [[P_LCSSA]]158;159; UNROLL-NO-VF-LABEL: define i16 @for_phi_removed(160; UNROLL-NO-VF-SAME: ptr [[SRC:%.*]]) {161; UNROLL-NO-VF-NEXT: [[ENTRY:.*:]]162; UNROLL-NO-VF-NEXT: br label %[[VECTOR_PH:.*]]163; UNROLL-NO-VF: [[VECTOR_PH]]:164; UNROLL-NO-VF-NEXT: br label %[[VECTOR_BODY:.*]]165; UNROLL-NO-VF: [[VECTOR_BODY]]:166; UNROLL-NO-VF-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]167; UNROLL-NO-VF-NEXT: [[TMP0:%.*]] = load i32, ptr [[SRC]], align 4168; UNROLL-NO-VF-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0169; UNROLL-NO-VF-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i16 1, i16 0170; UNROLL-NO-VF-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2171; UNROLL-NO-VF-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 110172; UNROLL-NO-VF-NEXT: br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]173; UNROLL-NO-VF: [[MIDDLE_BLOCK]]:174; UNROLL-NO-VF-NEXT: br label %[[SCALAR_PH:.*]]175; UNROLL-NO-VF: [[SCALAR_PH]]:176; UNROLL-NO-VF-NEXT: br label %[[LOOP:.*]]177; UNROLL-NO-VF: [[LOOP]]:178; UNROLL-NO-VF-NEXT: [[IV:%.*]] = phi i16 [ 110, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]179; UNROLL-NO-VF-NEXT: [[P:%.*]] = phi i16 [ [[TMP2]], %[[SCALAR_PH]] ], [ [[SEL:%.*]], %[[LOOP]] ]180; UNROLL-NO-VF-NEXT: [[L:%.*]] = load i32, ptr [[SRC]], align 4181; UNROLL-NO-VF-NEXT: [[C:%.*]] = icmp eq i32 [[L]], 0182; UNROLL-NO-VF-NEXT: [[SEL]] = select i1 [[C]], i16 1, i16 0183; UNROLL-NO-VF-NEXT: [[IV_NEXT]] = add i16 [[IV]], 1184; UNROLL-NO-VF-NEXT: [[EC:%.*]] = icmp eq i16 [[IV_NEXT]], 111185; UNROLL-NO-VF-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]186; UNROLL-NO-VF: [[EXIT]]:187; UNROLL-NO-VF-NEXT: [[P_LCSSA:%.*]] = phi i16 [ [[P]], %[[LOOP]] ]188; UNROLL-NO-VF-NEXT: ret i16 [[P_LCSSA]]189;190; SINK-AFTER-LABEL: define i16 @for_phi_removed(191; SINK-AFTER-SAME: ptr [[SRC:%.*]]) {192; SINK-AFTER-NEXT: [[ENTRY:.*:]]193; SINK-AFTER-NEXT: br label %[[VECTOR_PH:.*]]194; SINK-AFTER: [[VECTOR_PH]]:195; SINK-AFTER-NEXT: br label %[[VECTOR_BODY:.*]]196; SINK-AFTER: [[VECTOR_BODY]]:197; SINK-AFTER-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]198; SINK-AFTER-NEXT: [[TMP0:%.*]] = load i32, ptr [[SRC]], align 4199; SINK-AFTER-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0200; SINK-AFTER-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i16 1, i16 0201; SINK-AFTER-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4202; SINK-AFTER-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 108203; SINK-AFTER-NEXT: br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]204; SINK-AFTER: [[MIDDLE_BLOCK]]:205; SINK-AFTER-NEXT: br label %[[SCALAR_PH:.*]]206; SINK-AFTER: [[SCALAR_PH]]:207; SINK-AFTER-NEXT: br label %[[LOOP:.*]]208; SINK-AFTER: [[LOOP]]:209; SINK-AFTER-NEXT: [[IV:%.*]] = phi i16 [ 108, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]210; SINK-AFTER-NEXT: [[P:%.*]] = phi i16 [ [[TMP2]], %[[SCALAR_PH]] ], [ [[SEL:%.*]], %[[LOOP]] ]211; SINK-AFTER-NEXT: [[L:%.*]] = load i32, ptr [[SRC]], align 4212; SINK-AFTER-NEXT: [[C:%.*]] = icmp eq i32 [[L]], 0213; SINK-AFTER-NEXT: [[SEL]] = select i1 [[C]], i16 1, i16 0214; SINK-AFTER-NEXT: [[IV_NEXT]] = add i16 [[IV]], 1215; SINK-AFTER-NEXT: [[EC:%.*]] = icmp eq i16 [[IV_NEXT]], 111216; SINK-AFTER-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]217; SINK-AFTER: [[EXIT]]:218; SINK-AFTER-NEXT: [[P_LCSSA:%.*]] = phi i16 [ [[P]], %[[LOOP]] ]219; SINK-AFTER-NEXT: ret i16 [[P_LCSSA]]220;221entry:222 br label %loop223 224loop:225 %iv = phi i16 [ 0, %entry ], [ %iv.next, %loop ]226 %p = phi i16 [ 0, %entry ] , [ %sel, %loop ]227 %l = load i32, ptr %src, align 4228 %c = icmp eq i32 %l, 0229 %sel = select i1 %c, i16 1, i16 0230 %iv.next = add i16 %iv, 1231 %ec = icmp eq i16 %iv.next, 111232 br i1 %ec, label %exit, label %loop233 234exit:235 ret i16 %p236}237