Update stdsimd submodule

[jethrogb]

No description provided.

[rust-highfive]

r? @aturon

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[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[rust-highfive]

The job x86_64-gnu-llvm-5.0 of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

travis_time:end:0caccb04:start=1542953857766570812,finish=1542953858830289192,duration=1063718380
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-llvm-5.0
---
[00:53:16]     Checking compiler_builtins v0.0.0 (/checkout/src/rustc/compiler_builtins_shim)
[00:53:17]  Documenting alloc v0.0.0 (/checkout/src/liballoc)
[00:53:23]     Finished release [optimized] target(s) in 45.12s
[00:53:23]  Documenting core v0.0.0 (/checkout/src/libcore)
[00:53:28] error: cannot find macro `call!` in this scope
[00:53:28]   --> src/libcore/../stdsimd/coresimd/arm/armclang.rs:58:25
[00:53:28]    |
[00:53:28] 58 |     constify_imm8!(val, call);
[00:53:28]    |
[00:53:28]    |
[00:53:28]    = help: have you added the `#[macro_use]` on the module/import?
_64-unknown-linux-gnu/release
119368 ./obj/build/x86_64-unknown-linux-gnu/stage0-bootstrap-tools/x86_64-unknown-linux-gnu
119364 ./obj/build/x86_64-unknown-linux-gnu/stage0-bootstrap-tools/x86_64-unknown-linux-gnu/release
118444 ./obj/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[rust-highfive]

The job x86_64-gnu-llvm-5.0 of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

travis_time:end:09e4007b:start=1543385001619809772,finish=1543385056461914770,duration=54842104998
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-llvm-5.0
---
[00:46:04]     Checking compiler_builtins v0.0.0 (/checkout/src/rustc/compiler_builtins_shim)
[00:46:05]  Documenting alloc v0.0.0 (/checkout/src/liballoc)
[00:46:10]     Finished release [optimized] target(s) in 39.17s
[00:46:10]  Documenting core v0.0.0 (/checkout/src/libcore)
_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/doc --markdown-css rust.css --markdown-no-toc --index-page /checkout/src/doc/index.md -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-std/release/deps` (exit code: 1)
[00:46:14] 
[00:46:14] 
[00:46:14] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "rustdoc" "--target" "x86_64-unknown-linux-gnu" "-j" "4" "--release" "--locked" "--color" "always" "--features" "panic-unwind backtrace" "--manifest-path" "/checkout/src/libstd/Cargo.toml" "-Z" "unstable-options" "-p" "core" "--" "--markdown-css" "rust.css" "--markdown-no-toc" "--index-page" "/checkout/src/doc/index.md"
[00:46:14] 
[00:46:14] 
[00:46:14] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap doc
[00:46:14] Build completed unsuccessfully in 0:05:11
[00:46:14] Build completed unsuccessfully in 0:05:11
[00:46:14] Makefile:28: recipe for target 'all' failed
[00:46:14] make: *** [all] Error 1

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[jethrogb]

This should now be ready for review. Alternatively, it will land as part of #56066.

[jethrogb]

#56066 got merged with these changes.

[rust-highfive]

Your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)