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pan/cs: Allow sparse register set passed to loads/stores

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When it comes to copying stuff around, it becomes handy to be able
to have a discontiguous range of register to load to/store from so
we don't have to move stuff around to make things contiguous in the
register file.

Allow that by making register count the last bit in the mask rather
than counting bits.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Rebecca Mckeever <rebecca.mckeever@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Reviewed-by: John Anthony <john.anthony@arm.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30969>
This commit is contained in:
Boris Brezillon 2024-09-05 12:08:16 +02:00 • committed by Marge Bot
parent 1a5ce4a96e
commit b1934057cb
1 changed files with 2 additions and 2 deletions
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4
src/panfrost/lib/genxml/cs_builder.h
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@ -935,7 +935,7 @@ cs_load_to(struct cs_builder *b, struct cs_index dest, struct cs_index address,
unsigned mask, int offset)
{
cs_emit(b, LOAD_MULTIPLE, I) {
I.base_register = cs_to_reg_tuple(dest, util_bitcount(mask));
I.base_register = cs_to_reg_tuple(dest, util_last_bit(mask));
I.address = cs_to_reg64(address);
I.mask = mask;
I.offset = offset;
@ -961,7 +961,7 @@ cs_store(struct cs_builder *b, struct cs_index data, struct cs_index address,
unsigned mask, int offset)
{
cs_emit(b, STORE_MULTIPLE, I) {
I.base_register = cs_to_reg_tuple(data, util_bitcount(mask));
I.base_register = cs_to_reg_tuple(data, util_last_bit(mask));
I.address = cs_to_reg64(address);
I.mask = mask;
I.offset = offset;