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pco: temporarily treat already overridden refs as comps during regalloc

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Signed-off-by: Simon Perretta <simon.perretta@imgtec.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36412>
This commit is contained in:
Simon Perretta 2025-02-22 20:32:50 +00:00 • committed by Marge Bot
parent 195cb4bfce
commit f71f8e1bc7
1 changed files with 7 additions and 4 deletions
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11
src/imagination/pco/pco_ra.c
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@ -141,6 +141,9 @@ static bool pco_ra_func(pco_func *func,
struct ra_regs *ra_regs =
ra_alloc_reg_set(func, allocable_temps, !only_32bit);
BITSET_WORD *comps =
rzalloc_array_size(ra_regs, sizeof(*comps), BITSET_WORDS(num_ssas));
/* Overrides for vector coalescing. */
struct hash_table_u64 *overrides = _mesa_hash_table_u64_create(ra_regs);
pco_foreach_instr_in_func_rev (instr, func) {
@ -170,7 +173,10 @@ static bool pco_ra_func(pco_func *func,
if (pco_ref_is_ssa(*psrc)) {
/* Make sure this hasn't already been overridden somewhere else! */
assert(!_mesa_hash_table_u64_search(overrides, psrc->val));
if (_mesa_hash_table_u64_search(overrides, psrc->val)) {
BITSET_SET(comps, psrc->val);
continue;
}
struct vec_override *src_override =
rzalloc_size(overrides, sizeof(*src_override));
@ -184,9 +190,6 @@ static bool pco_ra_func(pco_func *func,
}
}
BITSET_WORD *comps =
rzalloc_array_size(ra_regs, sizeof(*comps), BITSET_WORDS(num_ssas));
/* Overrides for vector component uses. */
pco_foreach_instr_in_func (instr, func) {
if (instr->op != PCO_OP_COMP)