Roll SwiftShader from 5f5faa3a2aad to 79d4c6cae485 (3 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/5f5faa3a2aad..79d4c6cae485

2022-04-26 capn@google.com Replace rr::Config with an integer optimization level pragma
2022-04-26 capn@google.com Implement ScopedPragma
2022-04-26 stha09@googlemail.com GCC: add explicit template instantiation

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-dawn-autoroll
Please CC bclayton@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: bclayton@google.com
Change-Id: If41fdeabb996ece8035dfc5bd4eb5215252bc3c4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/88023
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

DEPS

@@ -132,7 +132,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@5f5faa3a2aad1a4cdc88633af60c4171efc022e2',
+    'url': '{swiftshader_git}/SwiftShader@79d4c6cae485c50d2d49aa1b3defe601dc23f145',
     'condition': 'dawn_standalone',
   },