skia2/tests/sksl
John Stiles 6d0234673a Optimize away empty for loops.
The fuzzer has found that it can get timeouts in SkVM by nesting loops
very very deeply, then at the bottom of the chain, making an inside-out
loop that runs for zero iterations. This has a calculated unrolled-size
of zero, but SkVM would still think hard about unrolling the (ultimately
empty) outer loops.

SkSL now optimizes away unrollable loops that run for zero iteratinons,
as well as empty unrollable loops. This should eliminate the fuzzer's
troublesome construct entirely.

Change-Id: Ic3ef7b7a6a9fc7ee7fb13eb7bd7f34c9bff57448
Bug: oss-fuzz:39661
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/456469
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-10-06 17:56:26 +00:00
..
blend Revert "Add RelaxedPrecision decoration to function-call temp vars." 2021-09-08 17:06:07 +00:00
errors Replace illegal DSLTypes with Poison types. 2021-10-06 00:12:07 +00:00
folding Remove 0/x arithmetic simplification. 2021-08-24 19:18:41 +00:00
glsl Report an error if sk_LastFragColor is referenced without fbFetchSupport 2021-09-15 15:41:49 +00:00
inliner Fix inliner bug discovered by fuzzer. 2021-09-07 13:29:37 +00:00
intrinsics Fix incorrect assertion discovered by fuzzer. 2021-10-04 13:41:56 +00:00
metal Reenable DSLParser 2021-09-16 15:28:19 +00:00
runtime Optimize away empty for loops. 2021-10-06 17:56:26 +00:00
runtime_errors Replace illegal DSLTypes with Poison types. 2021-10-06 00:12:07 +00:00
shared Optimize away empty for loops. 2021-10-06 17:56:26 +00:00
spirv Fix parsing error with SPIR-V negating a uint. 2021-08-25 17:52:50 +00:00
workarounds Reland "Don't key progams/pipelines on origin."" 2021-07-07 14:50:10 +00:00
README.txt Migrate SkSL test inputs to the resources/ directory. 2021-01-22 18:57:29 +00:00

This directory contains skslc-compiled output from matching source files
in the /resources/sksl/ directory.