Test on rvv-intrinsic-doc/examples/rvv_strcpy.c failed

[QQeg]

你好，
我为了测试gem5 (commit: 2909be3) 而去执行 rvv-intrinsic-doc/examples/rvv_strcpy.c 生成的执行档会得到fail的结果，
然而使用spike去模拟是可以得到pass的，可以请你们看看问题出在什么地方吗?

以下是我的command:

riscv64-unknown-elf-gcc -march=rv64gcv -o rvv_strcpy rvv_strcpy.c
spike --isa=rv64gcv --varch=vlen:256,elen:64 pk rvv_strcpy
gem5.opt se.py -c rvv_strcpy

rvv_strcpy.c:

#include "common.h"
#include <assert.h>
#include <riscv_vector.h>
#include <string.h>

// reference https://github.com/riscv/riscv-v-spec/blob/master/example/strcpy.s
char *strcpy_vec(char *dst, const char *src) {
  char *save = dst;
  size_t vlmax = __riscv_vsetvlmax_e8m8();
  long first_set_bit = -1;
  size_t vl;
  while (first_set_bit < 0) {
    vint8m8_t vec_src = __riscv_vle8ff_v_i8m8(src, &vl, vlmax);

    vbool1_t string_terminate = __riscv_vmseq_vx_i8m8_b1(vec_src, 0, vl);
    vbool1_t mask = __riscv_vmsif_m_b1(string_terminate, vl);

    __riscv_vse8_v_i8m8_m(mask, dst, vec_src, vl);

    src += vl;
    dst += vl;

    first_set_bit = __riscv_vfirst_m_b1(string_terminate, vl);
  }
  return save;
}

int main() {
  const int N = 2000;
  const uint32_t seed = 0xdeadbeef;
  srand(seed);

  // data gen
  char s0[N];
  gen_string(s0, N);

  // compute
  char golden[N], actual[N];
  strcpy(golden, s0);
  strcpy_vec(actual, s0);

  // compare
  puts(strcmp(golden, actual) == 0 ? "pass" : "fail");
}