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ir3: add support for collects in ir3_get_src_shared

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We want to start lowering certain NIR instructions to collects (e.g.,
instructions with a 64b def) which means that ir3_get_src_shared has to
support collects. Since we can't mov the result of a collect, implement
this by converting its sources and creating a new collect.

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33797>
This commit is contained in:
Job Noorman 2025-06-12 12:14:46 +02:00 • committed by Marge Bot
parent 36300ee51d
commit 74aecf2207
1 changed files with 13 additions and 0 deletions
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13
src/freedreno/ir3/ir3_context.c
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@ -256,6 +256,19 @@ static struct ir3_instruction *
get_shared(struct ir3_builder *build, struct ir3_instruction *src, bool shared)
{
if (!!(src->dsts[0]->flags & IR3_REG_SHARED) != shared) {
if (src->opc == OPC_META_COLLECT) {
/* We can't mov the result of a collect so mov its sources and create a
* new collect.
*/
struct ir3_instruction *new_srcs[src->srcs_count];
for (unsigned i = 0; i < src->srcs_count; i++) {
new_srcs[i] = get_shared(build, src->srcs[i]->def->instr, shared);
}
return ir3_create_collect(build, new_srcs, src->srcs_count);
}
struct ir3_instruction *mov =
ir3_MOV(build, src,
(src->dsts[0]->flags & IR3_REG_HALF) ? TYPE_U16 : TYPE_U32);