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jay/liveness: drop redundant source filtering

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41688>
This commit is contained in:
Alyssa Rosenzweig 2026-05-14 10:59:42 -04:00 • committed by Marge Bot
parent 9b68b4e7a1
commit 9a68101bc2
1 changed files with 5 additions and 16 deletions
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21
src/intel/compiler/jay/jay_liveness.c
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@ -145,7 +145,6 @@ void
jay_calculate_register_demands(jay_function *func)
{
enum jay_file *files = calloc(func->ssa_alloc, sizeof(enum jay_file));
BITSET_WORD *killed = BITSET_CALLOC(func->ssa_alloc);
unsigned *max_demand = func->demand;
memset(max_demand, 0, sizeof(func->demand));
@ -174,11 +173,6 @@ jay_calculate_register_demands(jay_function *func)
max_demand[I->dst.file] = MAX2(max_demand[I->dst.file], max);
}
/* Collect source values to kill */
jay_foreach_killed(I, s, c) {
BITSET_SET(killed, jay_channel(I->src[s], c));
}
/* Make destinations live */
jay_foreach_dst(I, d) {
demands[d.file] += util_next_power_of_two(jay_num_values(d));
@ -204,16 +198,12 @@ jay_calculate_register_demands(jay_function *func)
demands[d.file] -= util_next_power_of_two(n) - n;
}
/* Late-kill sources */
/* Late-kill sources. Duplicated sources are only marked killed once,
* so we do not need to filter out duplicates.
*/
jay_foreach_killed(I, s, c) {
uint32_t index = jay_channel(I->src[s], c);
if (BITSET_TEST(killed, index)) {
BITSET_CLEAR(killed, index);
assert(demands[I->src[s].file] > 0);
--demands[I->src[s].file];
}
assert(demands[I->src[s].file] > 0);
--demands[I->src[s].file];
}
if (jay_debug & JAY_DBG_PRINTDEMAND) {
@ -224,5 +214,4 @@ jay_calculate_register_demands(jay_function *func)
}
free(files);
free(killed);
}