[Mesa-dev] [PATCH 0/7] Faster GLSL compilation (for Gallium)

Marek Olšák maraeo at gmail.com
Sun Jan 1 00:34:25 UTC 2017


The first 2 patches make the GLSL preprocessor a little faster.

The others add an optional CAP/Const flag to Mesa and Gallium that
decreases the amount of GLSL optimizations that are executed by tweaking
the do_common_optimizations call sites. I've not seen a drop in the quality
of the produced TGSI (thanks to TGSI passes in glsl_to_tgsi?), but there is
a CAP just in case some other drivers don't want this. It reduces GLSL
compile times by 24% with the Gallium noop driver.
(or 10% with full radeonsi?)

Please review.

BTW, after this series, it became more obvious that debug builds have much
slower compilation because of these two:
- validate_ir_tree
- tgsi_sanity_check

If you wanna profile the compiler, disable those two or don't use a debug


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