Enable thumbv7a-pc-windows-msvc target build end to end in rust/master #60895

chandde · 2019-05-16T22:25:02Z

With this PR, plus another commit rust-lang/compiler-builtins@cf98161, I'm able to build the target thumbv7a-pc-windows-msvc successfully, and I'm able to use the stage2 artifacts to build arm32 projects. The commit in compiler_builtins is in release 0.1.14, the current cargo.lock in rust master still uses 0.1.12, so I bumped the compiler_builtins version in cargo.lock to 0.1.15

The command I used to build rust

c:\python27\python.exe x.py build --host x86_64-pc-windows-msvc --build x86_64-pc-windows-msvc --target thumbv7a-pc-windows-msvc --verbose

Changes

update cargolock to use compiler_builtins 0.1.15
handle libunwind in libtest for thumv7a the same as what we have for aarch64
in llvm codegen add a field in CodegenContext to carry the arch, so later in create_msvc_imps function, the arch can be used to check against "x86", instead of 32 pointer width. Apparently Thumv7a is handled differently than x86.

Background
I'm from Microsoft working on enabling Azure IoTEdge on ARM32 Windows IoTCore, Azure IoTEdge has a component called IoTEdged written in rust as a NT service running on Windows, so we need to enable rust on thumbv7a in order to have full IoTEdge. My colleague had made some heavy lifting and we've been using our private toolchain to build IoTEdged in our devops pipeline, because at that time we cannot build thumbv7a target end to end successfully. This change is a followup to enable the end to end build for thumbv7a-pc-windows-msvc target.

Next step
I'll submit more changes to have this target built nightly in rust/master, to achieve the same availability for aarch64-pc-windows-msvc, indexed here https://rust-lang.github.io/rustup-components-history/aarch64-pc-windows-msvc.html and can be manually installed. Please do share what takes to make this happen, is there a formal process I need to follow?

rust-highfive · 2019-05-16T22:25:15Z

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

rust-highfive · 2019-05-16T23:07:57Z

The job x86_64-gnu-llvm-6.0 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:0ab03768:start=1558047789072367083,finish=1558047876315381796,duration=87243014713
$ 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
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
$ export AWS_ACCESS_KEY_ID=AKIA46X5W6CZEJZ6XT55
---
[00:02:16]    Compiling toml v0.4.10
[00:02:16]    Compiling serde_json v1.0.33
[00:02:19]    Compiling bootstrap v0.0.0 (/checkout/src/bootstrap)
[00:02:53]     Finished dev [unoptimized] target(s) in 1m 25s
[00:02:53] error: failed to write /checkout/Cargo.lock
[00:02:53] Caused by:
[00:02:53]   failed to open: /checkout/Cargo.lock
[00:02:53] 
[00:02:53] Caused by:
---
[00:02:53] Makefile:69: recipe for target 'prepare' failed
[00:02:53] make: *** [prepare] Error 1
[00:02:54] Command failed. Attempt 2/5:
[00:02:55]     Finished dev [unoptimized] target(s) in 0.39s
[00:02:55] error: failed to write /checkout/Cargo.lock
[00:02:55] Caused by:
[00:02:55]   failed to open: /checkout/Cargo.lock
[00:02:55] 
[00:02:55] Caused by:
---
[00:02:55] make: *** [prepare] Error 1
[00:02:55] Makefile:69: recipe for target 'prepare' failed
[00:02:57] Command failed. Attempt 3/5:
[00:02:57]     Finished dev [unoptimized] target(s) in 0.38s
[00:02:58] error: failed to write /checkout/Cargo.lock
[00:02:58] Caused by:
[00:02:58]   failed to open: /checkout/Cargo.lock
[00:02:58] 
[00:02:58] Caused by:
---
[00:02:58] make: *** [prepare] Error 1
[00:02:58] Makefile:69: recipe for target 'prepare' failed
[00:03:01] Command failed. Attempt 4/5:
[00:03:01]     Finished dev [unoptimized] target(s) in 0.39s
[00:03:02] error: failed to write /checkout/Cargo.lock
[00:03:02] Caused by:
[00:03:02]   failed to open: /checkout/Cargo.lock
[00:03:02] 
[00:03:02] Caused by:
---
[00:03:02] Makefile:69: recipe for target 'prepare' failed
[00:03:02] make: *** [prepare] Error 1
[00:03:06] Command failed. Attempt 5/5:
[00:03:06]     Finished dev [unoptimized] target(s) in 0.39s
[00:03:07] error: failed to write /checkout/Cargo.lock
[00:03:07] Caused by:
[00:03:07]   failed to open: /checkout/Cargo.lock
[00:03:07] 
[00:03:07] Caused by:

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)

chandde · 2019-05-16T23:28:42Z

Undo the changes to bump compiler_builtins to hopefully have a good build. The version bump perhaps is worth another separate PR, @alexcrichton ?

rust-highfive · 2019-05-17T00:02:23Z

The job x86_64-gnu-llvm-6.0 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:2b706400:start=1558050274935843013,finish=1558050362613859735,duration=87678016722
$ 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
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
$ export AWS_ACCESS_KEY_ID=AKIA46X5W6CZEJZ6XT55
---

[00:03:54] travis_fold:start:tidy
travis_time:start:tidy
tidy check
[00:03:55] tidy error: /checkout/src/libtest/lib.rs:40: line longer than 100 chars
[00:04:00] some tidy checks failed
[00:04:00] 
[00:04:00] 
[00:04:00] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor" "--quiet"
[00:04:00] 
[00:04:00] 
[00:04:00] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:04:00] Build completed unsuccessfully in 0:01:14
[00:04:00] Build completed unsuccessfully in 0:01:14
[00:04:00] Makefile:67: recipe for target 'tidy' failed
[00:04:00] make: *** [tidy] Error 1
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:04724862
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Thu May 16 23:50:12 UTC 2019
---
travis_time:end:013a9478:start=1558050613002999815,finish=1558050613007613562,duration=4613747
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:0214fd96
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:07d4c2a8
travis_time:start:07d4c2a8
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:188c2180
$ dmesg | grep -i kill

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)

mzji · 2019-05-17T01:50:30Z

tidy check
[00:03:55] tidy error: /checkout/src/libtest/lib.rs:40: line longer than 100 chars
[00:04:00] some tidy checks failed
[00:04:00]

@chandde I think you should wrap this line to not exceed 80 columns.

mati865 · 2019-05-17T07:54:43Z

@chandde compiler-builtins are handled in #60841 you should probably remove both update and revert commits.

alexcrichton · 2019-05-17T14:27:37Z

r=me with tidy passing, thanks @chandde!

src/libtest/lib.rs

chandde · 2019-05-17T16:32:38Z

thanks for the comments, I'm out attending some school activities with my son and won't have access to a pc until tonight. Will address all the comments later and get back.

rust-highfive · 2019-05-18T03:49:49Z

The job x86_64-gnu-llvm-6.0 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:0738e0f4:start=1558150358557395921,finish=1558150446393389058,duration=87835993137
$ 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
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
$ export AWS_ACCESS_KEY_ID=AKIA46X5W6CZEJZ6XT55
---

[00:03:57] travis_fold:start:tidy
travis_time:start:tidy
tidy check
[00:03:58] tidy error: /checkout/src/libtest/lib.rs:40: line longer than 100 chars
[00:04:03] some tidy checks failed
[00:04:03] 
[00:04:03] 
[00:04:03] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor" "--quiet"
[00:04:03] 
[00:04:03] 
[00:04:03] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:04:03] Build completed unsuccessfully in 0:01:13
[00:04:03] Build completed unsuccessfully in 0:01:13
[00:04:03] make: *** [tidy] Error 1
[00:04:03] Makefile:67: recipe for target 'tidy' failed
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:0887a5ea
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Sat May 18 03:38:19 UTC 2019
---
travis_time:end:1c69de92:start=1558150699938187985,finish=1558150699943265664,duration=5077679
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:00225c1e
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:00668f5d
travis_time:start:00668f5d
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:0a090fcd
$ dmesg | grep -i kill

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)

chandde · 2019-05-18T07:40:31Z

@mati865 the update and revert have been forcefully removed in the commit history
@mzji @mati865 the line in libtest\lib.rs has been updated to #[cfg(not(all(windows, any(target_arch = "aarch64", target_arch = "arm"))))], should have fixed the test failure and also look simpler

src/librustc_codegen_llvm/back/write.rs

mzji · 2019-05-18T07:45:41Z

@mati865 the update and revert have been forcefully removed in the commit history
@mzji @mati865 the line in libtest\lib.rs has been updated to #[cfg(not(all(windows, any(target_arch = "aarch64", target_arch = "arm"))))], should have fixed the test failure and also look simpler

No, the tidy error line is the 40th line of src/libtest/lib.rs, looks like you didn't change it

chandde · 2019-05-18T07:50:30Z

@mati865 the update and revert have been forcefully removed in the commit history
@mzji @mati865 the line in libtest\lib.rs has been updated to #[cfg(not(all(windows, any(target_arch = "aarch64", target_arch = "arm"))))], should have fixed the test failure and also look simpler

No, the tidy error line is the 40th line of src/libtest/lib.rs, looks like you didn't change it

Now it's done done 759921e

I misread the comment and thought it's about the cfg line

chandde · 2019-05-19T15:45:27Z

r=me with tidy passing, thanks @chandde!

I don't understand the codes, did you say you're ok with the change once tidy passing? who's gonna sign off & merge? @alexcrichton

jonas-schievink · 2019-05-19T15:52:49Z

@chandde that's Mozilla "slang" that means your PR has been reviewed by whoever comments this and is ready to land when the remaining issues are addressed (in this case, the line length check).

Since that has been addressed:

@bors r=alexcrichton

bors · 2019-05-19T15:52:50Z

📌 Commit 759921e has been approved by alexcrichton

Enable thumbv7a-pc-windows-msvc target build end to end in rust/master With this PR, plus another commit rust-lang/compiler-builtins@cf98161, I'm able to build the target thumbv7a-pc-windows-msvc successfully, and I'm able to use the stage2 artifacts to build arm32 projects. The commit in compiler_builtins is in release 0.1.14, the current cargo.lock in rust master still uses 0.1.12, so I bumped the compiler_builtins version in cargo.lock to 0.1.15 The command I used to build rust ``` c:\python27\python.exe x.py build --host x86_64-pc-windows-msvc --build x86_64-pc-windows-msvc --target thumbv7a-pc-windows-msvc --verbose ``` **Changes** 1. update cargolock to use compiler_builtins 0.1.15 2. handle libunwind in libtest for thumv7a the same as what we have for aarch64 3. in llvm codegen add a field in CodegenContext to carry the arch, so later in create_msvc_imps function, the arch can be used to check against "x86", instead of 32 pointer width. Apparently Thumv7a is handled differently than x86. **Background** I'm from Microsoft working on enabling Azure IoTEdge on ARM32 Windows IoTCore, Azure IoTEdge has a component called IoTEdged written in rust as a NT service running on Windows, so we need to enable rust on thumbv7a in order to have full IoTEdge. My colleague had made some heavy lifting and we've been using our private toolchain to build IoTEdged in our devops pipeline, because at that time we cannot build thumbv7a target end to end successfully. This change is a followup to enable the end to end build for thumbv7a-pc-windows-msvc target. **Next step** I'll submit more changes to have this target built nightly in rust/master, to achieve the same availability for aarch64-pc-windows-msvc, indexed here https://rust-lang.github.io/rustup-components-history/aarch64-pc-windows-msvc.html and can be manually installed. **Please do share what takes to make this happen, is there a formal process I need to follow\?**

@ghost

Rollup of 6 pull requests Successful merges: - #60590 (Test interaction of unions with non-zero/niche-filling optimization) - #60745 (Perform constant propagation into terminators) - #60895 (Enable thumbv7a-pc-windows-msvc target build end to end in rust/master) - #60908 (Fix lints handling in rustdoc) - #60960 (Stop using gensyms in HIR lowering) - #60962 (Fix data types indication) Failed merges: r? @ghost

chandde · 2019-05-20T16:36:47Z

thanks for your review! now I'd like to have master branch build the target thumbv7a-pc-windows-msvc nightly, so user can install the target using rustup, without locally building the tool chain, is there instruction how to do it? ideally the same availability for aarch64-pc-windows-msvc here https://rust-lang.github.io/rustup-components-history/aarch64-pc-windows-msvc.html

@alexcrichton @mzji @mati865 @jonas-schievink

alexcrichton · 2019-05-20T16:46:42Z

@chandde I think you'll basically want to grep around for aarch64-pc-windows-msvc in this repository and mirror its configuration, wherever aarch64 is mentioned thumbv7a probably also needs to be mentioned

chandde · 2019-05-20T16:59:11Z

I'll add thumbv7a to whereever aarch64 has been mentioned, i.e. follow this search https://github.com/search?q=aarch64-pc-windows-msvc+user%3Arust-lang+repo%3Arust&type=Code

Which exact file (from above search) that enables aarch64 for nightly build? once I make these changes locally, how do I verify? I'd expect I can verify things locally instead of keep pulling from next good nightly build..

Also where the builds happens? that I can take a look at build status, pipelines, steps, to get a better idea how a target is built

@alexcrichton

alexcrichton · 2019-05-20T21:50:11Z

Currently the aarch64 target is built on AppVeyor, configured here.

chandde added 2 commits May 14, 2019 17:00

Update lib.rs

b5febe7

add targetarch for CodegenContext

ba3785e

rust-highfive assigned nikomatsakis May 16, 2019

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label May 16, 2019

chandde mentioned this pull request May 16, 2019

__imp___xxx is found in rust lib, however __imp__xxx is wanted when compiling my rust project #60866

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mati865 reviewed May 17, 2019

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src/libtest/lib.rs Outdated Show resolved Hide resolved

optimize the arm64 OR arm32 check

70f78b3

chandde commented May 18, 2019

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src/librustc_codegen_llvm/back/write.rs Show resolved Hide resolved

fix line length

759921e

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 19, 2019

Centril mentioned this pull request May 19, 2019

Rollup of 6 pull requests #60969

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bors merged commit 759921e into rust-lang:master May 20, 2019

chandde mentioned this pull request May 22, 2019

enable target thumbv7a-pc-windows-msvc in nightly build #61050

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Enable thumbv7a-pc-windows-msvc target build end to end in rust/master #60895

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Enable thumbv7a-pc-windows-msvc target build end to end in rust/master #60895

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