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From: "acoplan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111677] [12/13/14 Regression] darktable build on aarch64
 fails with unrecognizable insn due to -fstack-protector changes
Date: Thu, 25 Jan 2024 15:54:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111677

--- Comment #20 from Alex Coplan <acoplan at gcc dot gnu.org> ---
I think the testcase in #c10 went latent on the 13 branch but the following
(reduced from the attachment) still ICEs on the tip of the 13 branch with
-Ofast -fopenmp -fstack-protector-strong:

typedef struct {
  long size_z;
  int width;
} dt_bilateral_t;
typedef float dt_aligned_pixel_t[4];
#pragma omp declare simd
void dt_bilateral_splat(dt_bilateral_t *b) {
  float *buf;
  long offsets[8];
  for (; b;) {
    int firstrow;
    for (int j =3D firstrow; j; j++)
      for (int i; i < b->width; i++) {
        dt_aligned_pixel_t contrib;
        for (int k =3D 0; k < 4; k++)
          buf[offsets[k]] +=3D contrib[k];
      }
    float *dest;
    for (int j =3D (long)b; j; j++) {
      float *src =3D (float *)b->size_z;
      for (int i =3D 0; i < (long)b; i++)
        dest[i] +=3D src[i];
    }
  }
}=