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intel/fs: Move defin/defout setup to the start of the loop.

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Refactor for the next commit.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24702>
This commit is contained in:
Emma Anholt 2023-06-13 16:14:50 -07:00 • committed by Marge Bot
parent 7e246f7f2b
commit ed4e1becea
1 changed files with 23 additions and 23 deletions
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46
src/intel/compiler/brw_fs_live_variables.cpp
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@ -156,7 +156,29 @@ fs_live_variables::compute_live_variables()
{
bool cont = true;
while (cont) {
/* Propagate defin and defout down the CFG to calculate the union of live
* variables potentially defined along any possible control flow path.
*/
do {
cont = false;
foreach_block (block, cfg) {
const struct block_data *bd = &block_data[block->num];
foreach_list_typed(bblock_link, child_link, link, &block->children) {
struct block_data *child_bd = &block_data[child_link->block->num];
for (int i = 0; i < bitset_words; i++) {
const BITSET_WORD new_def = bd->defout[i] & ~child_bd->defin[i];
child_bd->defin[i] |= new_def;
child_bd->defout[i] |= new_def;
cont |= new_def;
}
}
}
} while (cont);
do {
cont = false;
foreach_block_reverse (block, cfg) {
@ -200,28 +222,6 @@ fs_live_variables::compute_live_variables()
cont = true;
}
}
}
/* Propagate defin and defout down the CFG to calculate the union of live
* variables potentially defined along any possible control flow path.
*/
do {
cont = false;
foreach_block (block, cfg) {
const struct block_data *bd = &block_data[block->num];
foreach_list_typed(bblock_link, child_link, link, &block->children) {
struct block_data *child_bd = &block_data[child_link->block->num];
for (int i = 0; i < bitset_words; i++) {
const BITSET_WORD new_def = bd->defout[i] & ~child_bd->defin[i];
child_bd->defin[i] |= new_def;
child_bd->defout[i] |= new_def;
cont |= new_def;
}
}
}
} while (cont);
}