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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 52; RUN: opt -passes=loop-vectorize -S %s | FileCheck %s3 4; There could be more than one LCSSA PHIs in loop exit block.5define i16 @duplicate_lcssa(i16 %val) {6; CHECK-LABEL: define i16 @duplicate_lcssa(7; CHECK-SAME: i16 [[VAL:%.*]]) {8; CHECK-NEXT: [[ENTRY:.*:]]9; CHECK-NEXT: br label %[[VECTOR_PH:.*]]10; CHECK: [[VECTOR_PH]]:11; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]12; CHECK: [[VECTOR_BODY]]:13; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]14; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i16> [ <i16 0, i16 -1, i16 -2, i16 -3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]15; CHECK-NEXT: [[TMP0:%.*]] = sub nsw <4 x i16> [[VEC_IND]], splat (i16 1)16; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 417; CHECK-NEXT: [[VEC_IND_NEXT]] = add nsw <4 x i16> [[VEC_IND]], splat (i16 -4)18; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[INDEX_NEXT]], 6553619; CHECK-NEXT: br i1 [[TMP1]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]20; CHECK: [[MIDDLE_BLOCK]]:21; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI1:%.*]] = extractelement <4 x i16> [[TMP0]], i32 222; CHECK-NEXT: br label %[[EXIT:.*]]23; CHECK: [[EXIT]]:24; CHECK-NEXT: ret i16 [[VECTOR_RECUR_EXTRACT_FOR_PHI1]]25;26entry:27 br label %loop28 29loop:30 %iv = phi i16 [ 0, %entry ], [ %iv.next, %loop ]31 %res = phi i16 [ %val, %entry ], [ %iv.next, %loop ]32 %iv.next = sub nsw i16 %iv, 133 %exit.cond = icmp ne i16 %iv.next, 034 br i1 %exit.cond, label %loop, label %exit35 36exit:37 %lcssa.1 = phi i16 [ %res, %loop ]38 %lcssa.2 = phi i16 [ %res, %loop ]39 ret i16 %lcssa.240}41