Wenum-compare-switch landed in r310521. Now we can disable that on the tot bots and see if they cycle green. I'll give that a go.

We also likely want to wait for an lld change that adds --icf=none to lld (see internal thread "I want to disable ICF for a server-side binary"). ruiu, please update this bug with an llvm revision number once you landed that flag

r310382 to make avail attrib not make symbols visible

We also likely want to wait for a fix for PR34056, sounds like that's imminent.

I've just added --icf=none to lld in http://reviews.llvm.org/rL310526.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/203d085a0f6989b0cb4a2a6e461f5439bfa0285f

commit 203d085a0f6989b0cb4a2a6e461f5439bfa0285f
Author: Nico Weber <thakis@chromium.org>
Date: Wed Aug 09 21:39:11 2017

Disable new -Wenum-compare-switch on the tot bots.

Bug:  753944 , 753973 
Change-Id: I813ce64b4db8bdef88e633a1b363eafccc8bd026
Reviewed-on: https://chromium-review.googlesource.com/608851
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Hans Wennborg <hans@chromium.org>
Reviewed-by: Reid Kleckner <rnk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493150}
[modify] https://crrev.com/203d085a0f6989b0cb4a2a6e461f5439bfa0285f/build/config/compiler/BUILD.gn

r310534 for  issue 742563  (that's the thing I said we should wait for in comment 5). Sounds like we can give it a shot once the tot bots have cycled green.

trying to build binaries at https://chromium-review.googlesource.com/c/610363

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/60031f7bbd86172a18cd4150ba7004b59593c73b

commit 60031f7bbd86172a18cd4150ba7004b59593c73b
Author: Nico Weber <thakis@chromium.org>
Date: Fri Aug 11 18:19:10 2017

Roll clang 309984:310580.

Ran `tools/clang/scripts/upload_revision.py 310580`.

BUG= 753944 

Change-Id: I1c1857de33bf6c6368c83c18838d49bf92036b58
Reviewed-on: https://chromium-review.googlesource.com/610363
Reviewed-by: Hans Wennborg <hans@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493815}
[modify] https://crrev.com/60031f7bbd86172a18cd4150ba7004b59593c73b/build/config/compiler/BUILD.gn
[modify] https://crrev.com/60031f7bbd86172a18cd4150ba7004b59593c73b/tools/clang/scripts/update.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5d3d8140989b31a392735887adfb0f253faceaea

commit 5d3d8140989b31a392735887adfb0f253faceaea
Author: Nico Weber <thakis@chromium.org>
Date: Fri Aug 11 20:42:05 2017

Revert "Roll clang 309984:310580."

This reverts commit 60031f7bbd86172a18cd4150ba7004b59593c73b.

Reason for revert: Broke iOS/arm64 builds,  crbug.com/754829 

Original change's description:
> Roll clang 309984:310580.
> 
> Ran `tools/clang/scripts/upload_revision.py 310580`.
> 
> BUG= 753944 
> 
> Change-Id: I1c1857de33bf6c6368c83c18838d49bf92036b58
> Reviewed-on: https://chromium-review.googlesource.com/610363
> Reviewed-by: Hans Wennborg <hans@chromium.org>
> Commit-Queue: Nico Weber <thakis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#493815}

TBR=thakis@chromium.org,hans@chromium.org

Change-Id: I5148540b4d63bd2069b3747025919dd517f797b7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  753944 
Reviewed-on: https://chromium-review.googlesource.com/611723
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493843}
[modify] https://crrev.com/5d3d8140989b31a392735887adfb0f253faceaea/build/config/compiler/BUILD.gn
[modify] https://crrev.com/5d3d8140989b31a392735887adfb0f253faceaea/tools/clang/scripts/update.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2af1673dd06e01a9adc15d34776f1100ca4e7f5c

commit 2af1673dd06e01a9adc15d34776f1100ca4e7f5c
Author: Nico Weber <thakis@chromium.org>
Date: Sat Aug 12 23:23:01 2017

Roll clang 309984:310694.

Ran `tools/clang/scripts/upload_revision.py 310694`.

BUG= 753944 
TBR=hans

Change-Id: I7e6aed0f0d65fa28c5df19523d41e06e7ea94c11
Reviewed-on: https://chromium-review.googlesource.com/612477
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493985}
[modify] https://crrev.com/2af1673dd06e01a9adc15d34776f1100ca4e7f5c/build/config/compiler/BUILD.gn
[modify] https://crrev.com/2af1673dd06e01a9adc15d34776f1100ca4e7f5c/tools/clang/scripts/update.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d09279c9b7cd06cc9d1fa91c03c3a49338674041

commit d09279c9b7cd06cc9d1fa91c03c3a49338674041
Author: Nico Weber <thakis@chromium.org>
Date: Mon Aug 14 19:41:31 2017

mac: Remove workaround for a compiler bug that's now fixed.

Bug:  669240 , 735328 , 753944 
Cq-Include-Trybots: master.tryserver.chromium.mac:mac_optional_gpu_tests_rel
Change-Id: Ia478da385744cb064da270819322abc3d8789f9c
Reviewed-on: https://chromium-review.googlesource.com/614081
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#494135}
[modify] https://crrev.com/d09279c9b7cd06cc9d1fa91c03c3a49338674041/services/shape_detection/barcode_detection_impl_mac.h
[modify] https://crrev.com/d09279c9b7cd06cc9d1fa91c03c3a49338674041/services/shape_detection/text_detection_impl_mac.h
[modify] https://crrev.com/d09279c9b7cd06cc9d1fa91c03c3a49338674041/ui/base/cocoa/touch_bar_util.h