[Bug target/116564] [12/13/14/15 Regression] aarch64: gcc can't finish when compiling vst2_f64 instrinsic with opt level >= O1

[acoplan at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116564

--- Comment #2 from Alex Coplan <acoplan at gcc dot gnu.org> ---
Here's a preprocessed testcase (not for the testsuite, just to make it easier
to reproduce using only cc1):

#pragma GCC aarch64 "arm_neon.h"

typedef double float64_t;

__extension__ extern __inline void
__attribute__ ((__always_inline__, __gnu_inline__, __artificial__))
vst2_f64 (float64_t * __a, float64x1x2_t __val)
{
  __builtin_aarch64_st2df ((__builtin_aarch64_simd_df *) __a, __val);
}

void test()
{
  for (int L = 0; L < 4; ++L) {
    float64_t ResData[1 * 2];
    float64x1x2_t Src1;
    vst2_f64(ResData, Src1);
  }
}