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pan/bi: Mark DISCARD as having side effects

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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/9164>
This commit is contained in:
Alyssa Rosenzweig
2021-02-19 09:28:52 -05:00
committed by Marge Bot
parent 25da85880e
commit 35e24aef6f
1 changed files with 5 additions and 5 deletions
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10
src/panfrost/bifrost/bir.c
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@@ -138,15 +138,15 @@ bi_next_clause(bi_context *ctx, pan_block *block, bi_clause *clause)
}
/* Does an instruction have a side effect not captured by its register
* destination? Applies to certain message-passing instructions and branching
* only, used in dead code elimation. Branches are characterized by `last`
* which applies to them and some atomics, +BARRIER, +BLEND which implies no
* loss of generality */
* destination? Applies to certain message-passing instructions, +DISCARD, and
* branching only, used in dead code elimation. Branches are characterized by
* `last` which applies to them and some atomics, +BARRIER, +BLEND which
* implies no loss of generality */
bool
bi_side_effects(enum bi_opcode op)
{
if (bi_opcode_props[op].last)
if (bi_opcode_props[op].last || op == BI_OPCODE_DISCARD_F32)
return true;
switch (bi_opcode_props[op].message) {