[Bug tree-optimization/112536] [14 regression] ICE when buliding xorg-server on arm64 (internal compiler error: in vect_slp_analyze_node_operations, at tree-vect-slp.cc:6378)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112536

--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
Reduced:
```
typedef struct {
  int green, blue;
} rgb;

struct {
  rgb offset;
} xf86SetWeight_scrp;

rgb xf86SetWeight_mask;

int ffs(int color);

void xf86SetWeight() {
  xf86SetWeight_scrp.offset.green = ffs(xf86SetWeight_mask.green) - 1;
  xf86SetWeight_scrp.offset.blue = ffs(xf86SetWeight_mask.blue) - 1;
}
```