If we're in handle_collect()'s dst allocation and are part of a merge set
near the end of the file, our check for reg_elem_size(reg) would let us
use the preferred reg when that would immediately lead to
allocate_dst_fixed() creating an interval extending thruogh reg_size(reg)
that overflows the file.
Avoids a regression on gfxbench5/gl_5_high_off/17.shader_test in the next
commit. No change on shader-db.
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18946>
if (reg->merge_set && reg->merge_set->preferred_reg != (physreg_t)~0) {
physreg_t preferred_reg =
reg->merge_set->preferred_reg + reg->merge_set_offset;
- if (preferred_reg < file_size &&
+ if (preferred_reg + reg_size(reg) <= file_size &&
preferred_reg % reg_elem_size(reg) == 0 &&
get_reg_specified(ctx, file, reg, preferred_reg, false))
return preferred_reg;