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nir/opt_dead_cf: Clarify comment

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Make it obvious that the comment is about the block stitching behavior
of nir_cf_node_remove.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22064>
This commit is contained in:
Konstantin Seurer 2023-07-11 16:47:34 +02:00 • committed by Marge Bot
parent 4b5737b785
commit f160f7c525
1 changed files with 5 additions and 4 deletions
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9
src/compiler/nir/nir_opt_dead_cf.c
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@ -312,10 +312,11 @@ dead_cf_list(struct exec_list *list, bool *list_ends_in_jump)
case nir_cf_node_block: {
nir_block *block = nir_cf_node_as_block(cur);
while (dead_cf_block(block)) {
/* We just deleted the if or loop after this block, so we may have
* deleted the block before or after it -- which one is an
* implementation detail. Therefore, to recover the place we were
* at, we have to use the previous cf_node.
/* We just deleted the if or loop after this block.
* nir_cf_node_remove may have deleted the block before
* or after it -- which one is an implementation detail.
* Therefore, to recover the place we were at, we have
* to use the previous cf_node.
*/
if (prev) {