Roll third_party/externals/swiftshader 481daed34f15..0bbf7ba9f909 (5 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/481daed34f15..0bbf7ba9f909

git log 481daed34f15..0bbf7ba9f909 --date=short --first-parent --format='%ad %ae %s'
2020-02-17 [email protected] Cache callstack results to avoid expensive lookup
2020-02-17 [email protected] Subzero: add REACTOR_EMIT_PRINT_LOCATION support
2020-02-17 [email protected] third_party: Add shell script that updates marl.
2020-02-17 [email protected] Implement rr::Print support for Subzero
2020-02-17 [email protected] Subzero: fix another load from constant data

Created with:
  gclient setdep -r third_party/externals/swiftshader@0bbf7ba9f909

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

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/+/master/autoroll/README.md

Cq-Include-Trybots: skia/skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: [email protected]
Change-Id: I23715da549973117e42687f98435b14d1e7a12fc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/271437
Reviewed-by: skia-autoroll <[email protected]>
Commit-Queue: skia-autoroll <[email protected]>

Author: skia-autoroll

DEPS

@@ -31,7 +31,7 @@ deps = {
   "third_party/externals/spirv-cross"     : "https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Cross@53ab2144b90abede33be5161aec5dfc94ddc3caf",
   "third_party/externals/spirv-headers"   : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git@29c11140baaf9f7fdaa39a583672c556bf1795a1",
   "third_party/externals/spirv-tools"     : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@0c4feb643b89d1792b02f7cbef315e9d95633bd7",
-  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@481daed34f15a118d6897d719e70230117f19cfa",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@0bbf7ba9f909092f0328b1d519d5f7db1773be57",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs.git@4080840928c0b05a80cda0d14ac2e2615f679f1a",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@47af7c547f8551bd25424e56354a2ae1e9062859",