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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt -p loop-vectorize -force-vector-width=2 -epilogue-vectorization-force-VF=2 -S %s | FileCheck %s3 4target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"5 6; Test case for https://github.com/llvm/llvm-project/issues/122558.7define void @vector_trip_count_0_as_btc_is_all_1(ptr %dst) #0 {8; CHECK-LABEL: define void @vector_trip_count_0_as_btc_is_all_1(9; CHECK-SAME: ptr [[DST:%.*]]) {10; CHECK-NEXT: [[ENTRY:.*]]:11; CHECK-NEXT: br label %[[LOOP:.*]]12; CHECK: [[LOOP]]:13; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]14; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], -115; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, ptr [[DST]], i32 [[IV]]16; CHECK-NEXT: store i32 [[IV_NEXT]], ptr [[GEP]], align 417; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_NEXT]], 018; CHECK-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]]19; CHECK: [[EXIT]]:20; CHECK-NEXT: ret void21;22entry:23 br label %loop24 25loop:26 %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]27 %iv.next = add i32 %iv, -128 %gep = getelementptr inbounds i32, ptr %dst, i32 %iv29 store i32 %iv.next, ptr %gep, align 430 %ec = icmp eq i32 %iv.next, 031 br i1 %ec, label %exit, label %loop32 33exit:34 ret void35}36