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pan/bi: Add constant state constructor

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Based on the tuple state's constants, satisfying the pcrel invariant we
impose.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
This commit is contained in:
Alyssa Rosenzweig 2021-02-05 19:53:49 -05:00 • committed by Marge Bot
parent 7aaaf9cfaf
commit 79dc2038a2
1 changed files with 29 additions and 0 deletions
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29
src/panfrost/bifrost/bi_schedule.c
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@ -951,6 +951,35 @@ bi_rewrite_constants_to_pass(bi_tuple *tuple, uint64_t constant, bool pcrel)
}
}
/* Constructs a constant state given a tuple state. This has the
* postcondition that pcrel applies to the first constant by convention,
* and PC-relative constants will be #0 by convention here, so swap to
* match if needed */
static struct bi_const_state
bi_get_const_state(struct bi_tuple_state *tuple)
{
struct bi_const_state consts = {
.constant_count = tuple->constant_count,
.constants[0] = tuple->constants[0],
.constants[1] = tuple->constants[1],
.pcrel = tuple->add && tuple->add->branch_target,
};
/* pcrel applies to the first constant by convention, and
* PC-relative constants will be #0 by convention here, so swap
* to match if needed */
if (consts.pcrel && consts.constants[0]) {
assert(consts.constant_count == 2);
assert(consts.constants[1] == 0);
consts.constants[1] = consts.constants[0];
consts.constants[0] = 0;
}
return consts;
}
#ifndef NDEBUG
static bi_builder *