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pan/bi: Add trivial rewrite helpers

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We need to do certain rewrites during scheduling before RA runs in order
to satsify scheduler post-conditions.

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 19:52:18 -05:00 • committed by Marge Bot
parent 66100895ff
commit fc7770b1dd
1 changed files with 26 additions and 0 deletions
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26
src/panfrost/bifrost/bi_schedule.c
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@ -890,6 +890,32 @@ bi_rewrite_passthrough(bi_tuple prec, bi_tuple succ)
}
}
static void
bi_rewrite_fau_to_pass(bi_tuple *tuple)
{
bi_foreach_instr_and_src_in_tuple(tuple, ins, s) {
if (ins->src[s].type != BI_INDEX_FAU) continue;
ins->src[s] = bi_passthrough(ins->src[s].offset ?
BIFROST_SRC_FAU_HI : BIFROST_SRC_FAU_LO);
}
}
static void
bi_rewrite_zero(bi_instr *ins, bool fma)
{
bi_foreach_src(ins, s) {
bi_index src = ins->src[s];
unsigned swizzle = src.swizzle;
if (src.type == BI_INDEX_CONSTANT && src.value == 0) {
assert(!src.abs && !src.neg);
ins->src[s] = bi_passthrough(
fma ? BIFROST_SRC_STAGE : BIFROST_SRC_FAU_LO);
ins->src[s].swizzle = swizzle;
}
}
}
#ifndef NDEBUG