Roll SwiftShader from 70f3a0ff7233 to 4c6da56da96c (3 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/70f3a0ff7233..4c6da56da96c

2021-11-07 sugoi@google.com VK_EXT_pipeline_creation_feedback support
2021-11-07 swiftshader.regress@gmail.com Regres: Update test lists @ 70f3a0ff
2021-11-06 capn@google.com Fix min/max blend operations

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-angle-autoroll
Please CC cnorthrop@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 ANGLE: https://bugs.chromium.org/p/angleproject/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: cnorthrop@google.com
Change-Id: If0ca4444fc5dc0a750550673475fb253f5ceb1f6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3267553
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index de9803e..0c09717 100644
--- a/DEPS
+++ b/DEPS
@@ -496,7 +496,7 @@
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@70f3a0ff7233cfd677f818fffdabe3559a77cc89',
+    'url': '{swiftshader_git}/SwiftShader@4c6da56da96ce9e90654850d2cd584ffe6e29514',
     'condition': 'not build_with_chromium',
   },