[ms] [llvm-ml] Add llvm-ml64 alias

[ericastor]

Rather than requiring users to pass -m64 to the llvm-ml driver to get 64-bit behavior, we add the llvm-ml64 alias, matching the behavior of ML.EXE and ML64.EXE.

The original flavor/bitness flags still work, but the alias should make some workflows easier.

NOTE: The logic for this already existed in the code; we're just finally adding the build/install instructions to match.

[mstorsjo]

Looking good overall, one comment about the tests.

It may be good to add to the commit message, that the logic for doing this already happened to exist in the code, we just didn't install such aliases yet.

[ericastor]

Looking good overall, one comment about the tests.

It may be good to add to the commit message, that the logic for doing this already happened to exist in the code, we just didn't install such aliases yet.

Good idea; I'll try to remember to add that to the final commit message when I merge.

[mstorsjo]

Good idea; I'll try to remember to add that to the final commit message when I merge.

To avoid needing to remember it (and risk to forget it), you can also edit the PR description (the first post), which is used as template for the final commit message once you go ahead and merge it.

[ericastor]

Good idea; I'll try to remember to add that to the final commit message when I merge.

To avoid needing to remember it (and risk to forget it), you can also edit the PR description (the first post), which is used as template for the final commit message once you go ahead and merge it.

Ah, I couldn't figure out where the final commit message template lived! Thanks, fixed.

[ericastor]

I think I've finally got the CMake logic fixed up at this point. Any final reviews?

[llvm-ci]

LLVM Buildbot has detected a new failure on builder flang-aarch64-out-of-tree running on linaro-flang-aarch64-out-of-tree while building llvm,utils at step 8 "test-build-flang-unified-tree-check-flang".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/53/builds/14112

Here is the relevant piece of the build log for the reference

Step 8 (test-build-flang-unified-tree-check-flang) failure: test (failure)
******************** TEST 'Flang :: Lower/complex-operations.f90' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 2: bbc -hlfir=false /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90 -o - | /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/bin/FileCheck /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90
+ bbc -hlfir=false /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90 -o -
+ /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/bin/FileCheck /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90
/home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90:94:3: error: COMPLEX(KIND=10) is not an enabled type for this target
    complex(kind=10) :: a, b, c
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
bbc: semantic errors in /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/bin/FileCheck /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/test/Lower/complex-operations.f90

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[llvm-ci]

LLVM Buildbot has detected a new failure on builder llvm-clang-x86_64-darwin running on doug-worker-3 while building llvm,utils at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/23/builds/8620

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: tools/llvm-objcopy/ELF/remove-section-group.test' FAILED ********************
Exit Code: -6

Command Output (stderr):
--
RUN: at line 4: /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/yaml2obj /Volumes/RAMDisk/buildbot-root/x86_64-darwin/llvm-project/llvm/test/tools/llvm-objcopy/ELF/remove-section-group.test -o -    | /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/llvm-objcopy -R .group - -    | /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/llvm-readobj --sections -    | /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/FileCheck /Volumes/RAMDisk/buildbot-root/x86_64-darwin/llvm-project/llvm/test/tools/llvm-objcopy/ELF/remove-section-group.test
+ /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/yaml2obj /Volumes/RAMDisk/buildbot-root/x86_64-darwin/llvm-project/llvm/test/tools/llvm-objcopy/ELF/remove-section-group.test -o -
+ /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/llvm-objcopy -R .group - -
+ /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/llvm-readobj --sections -
+ /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/bin/FileCheck /Volumes/RAMDisk/buildbot-root/x86_64-darwin/llvm-project/llvm/test/tools/llvm-objcopy/ELF/remove-section-group.test

--

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