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compiler/glsl: Always propagate_invariance() last

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Suggested-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10292>
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Matt Turner 2021-04-20 12:12:05 -04:00 • committed by Marge Bot
parent d35f8604c7
commit 7f8c5844ef
1 changed files with 10 additions and 0 deletions
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10
src/compiler/glsl/glsl_parser_extras.cpp
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@ -2413,6 +2413,16 @@ do_common_optimization(exec_list *ir, bool linked,
delete ls;
}
/* If the PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY cap is set, this pass will
* only be called once rather than repeatedly until no further progress is
* made.
*
* If an optimization pass fails to preserve the invariant flag, calling
* the pass only once may result in incorrect code generation. Always call
* propagate_invariance() last to avoid this possibility.
*/
OPT(propagate_invariance, ir);
#undef OPT
return progress;