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Merged
merged 2 commits into from
Jul 23, 2025

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andrurogerz
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Purpose

This PR is a re-application of #145575 with independent definition of ABI_BREAKING_EXPORT_ABI that does not depend on llvm/Support/Compiler.h. It is one in a series of code-mods that annotate LLVM’s public interface for export. This patch annotates the ABI Breaking Checks interface in llvm/config. The annotations currently have no meaningful impact on the LLVM build; however, they are a prerequisite to support an LLVM Windows DLL (shared library) build.

Background

The effort to build LLVM as a Windows DLL is tracked in #109483. Additional context is provided in this discourse, and documentation for LLVM_ABI and related annotations is found in the LLVM repo here.

Validation

Local builds and tests to validate cross-platform compatibility. This included llvm, clang, and lldb on the following configurations:

  • Windows with MSVC
  • Windows with Clang
  • Linux with GCC
  • Linux with Clang
  • Darwin with Clang

@andrurogerz andrurogerz marked this pull request as ready for review July 17, 2025 00:28
@andrurogerz
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@compnerd @vgvassilev this is a redo of #145575, which I had to revert because it introduced a cyclic dependency

@andrurogerz andrurogerz requested a review from compnerd July 22, 2025 16:48
@compnerd compnerd merged commit 11d97b3 into llvm:main Jul 23, 2025
9 checks passed
rupprecht added a commit to rupprecht/llvm-project that referenced this pull request Jul 24, 2025
rupprecht added a commit that referenced this pull request Jul 24, 2025
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llvm-ci commented Jul 24, 2025

LLVM Buildbot has detected a new failure on builder premerge-monolithic-linux running on premerge-linux-1 while building llvm at step 7 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/153/builds/39162

Here is the relevant piece of the build log for the reference
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
...
PASS: lld :: COFF/arm64ec-patchable-thunks.test (98779 of 101857)
PASS: lld :: COFF/arm64x-entry.test (98780 of 101857)
PASS: lld :: COFF/arm64ec-hybmp.s (98781 of 101857)
PASS: lld :: COFF/associative-comdat-order.test (98782 of 101857)
PASS: lld :: COFF/autoimport-nowarn.s (98783 of 101857)
PASS: lld :: COFF/arm64ec-import.test (98784 of 101857)
PASS: lld :: COFF/arm64x-guardcf.s (98785 of 101857)
PASS: lld :: COFF/autoimport-gnu-implib.s (98786 of 101857)
PASS: lld :: COFF/color-diagnostics.test (98787 of 101857)
TIMEOUT: MLIR :: Examples/standalone/test.toy (98788 of 101857)
******************** TEST 'MLIR :: Examples/standalone/test.toy' FAILED ********************
Exit Code: 1
Timeout: Reached timeout of 60 seconds

Command Output (stdout):
--
# RUN: at line 1
"/etc/cmake/bin/cmake" "/build/buildbot/premerge-monolithic-linux/llvm-project/mlir/examples/standalone" -G "Ninja"  -DCMAKE_CXX_COMPILER=/usr/bin/clang++ -DCMAKE_C_COMPILER=/usr/bin/clang  -DLLVM_ENABLE_LIBCXX=OFF -DMLIR_DIR=/build/buildbot/premerge-monolithic-linux/build/lib/cmake/mlir  -DLLVM_USE_LINKER=lld  -DPython3_EXECUTABLE="/usr/bin/python3.10"
# executed command: /etc/cmake/bin/cmake /build/buildbot/premerge-monolithic-linux/llvm-project/mlir/examples/standalone -G Ninja -DCMAKE_CXX_COMPILER=/usr/bin/clang++ -DCMAKE_C_COMPILER=/usr/bin/clang -DLLVM_ENABLE_LIBCXX=OFF -DMLIR_DIR=/build/buildbot/premerge-monolithic-linux/build/lib/cmake/mlir -DLLVM_USE_LINKER=lld -DPython3_EXECUTABLE=/usr/bin/python3.10
# .---command stdout------------
# | -- The CXX compiler identification is Clang 16.0.6
# | -- The C compiler identification is Clang 16.0.6
# | -- Detecting CXX compiler ABI info
# | -- Detecting CXX compiler ABI info - done
# | -- Check for working CXX compiler: /usr/bin/clang++ - skipped
# | -- Detecting CXX compile features
# | -- Detecting CXX compile features - done
# | -- Detecting C compiler ABI info
# | -- Detecting C compiler ABI info - done
# | -- Check for working C compiler: /usr/bin/clang - skipped
# | -- Detecting C compile features
# | -- Detecting C compile features - done
# | -- Looking for histedit.h
# | -- Looking for histedit.h - found
# | -- Found LibEdit: /usr/include (found version "2.11") 
# | -- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11") 
# | -- Found LibXml2: /usr/lib/x86_64-linux-gnu/libxml2.so (found version "2.9.13") 
# | -- Using MLIRConfig.cmake in: /build/buildbot/premerge-monolithic-linux/build/lib/cmake/mlir
# | -- Using LLVMConfig.cmake in: /build/buildbot/premerge-monolithic-linux/build/lib/cmake/llvm
# | -- Linker detection: unknown
# | -- Performing Test LLVM_LIBSTDCXX_MIN
# | -- Performing Test LLVM_LIBSTDCXX_MIN - Success
# | -- Performing Test LLVM_LIBSTDCXX_SOFT_ERROR
# | -- Performing Test LLVM_LIBSTDCXX_SOFT_ERROR - Success
# | -- Performing Test CXX_SUPPORTS_CUSTOM_LINKER
# | -- Performing Test CXX_SUPPORTS_CUSTOM_LINKER - Success
# | -- Performing Test C_SUPPORTS_FPIC
# | -- Performing Test C_SUPPORTS_FPIC - Success
# | -- Performing Test CXX_SUPPORTS_FPIC

mahesh-attarde pushed a commit to mahesh-attarde/llvm-project that referenced this pull request Jul 28, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
mahesh-attarde pushed a commit to mahesh-attarde/llvm-project that referenced this pull request Jul 28, 2025
@andrurogerz andrurogerz deleted the llvmdll-lib-config branch July 29, 2025 15:54
SquallATF pushed a commit to SquallATF/llvm-project that referenced this pull request Jul 30, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
andrurogerz added a commit to andrurogerz/llvm-project that referenced this pull request Aug 4, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
andrurogerz added a commit to andrurogerz/llvm-project that referenced this pull request Aug 4, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
andrurogerz added a commit to andrurogerz/llvm-project that referenced this pull request Aug 4, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
andrurogerz added a commit to andrurogerz/llvm-project that referenced this pull request Aug 5, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
SquallATF pushed a commit to SquallATF/llvm-project that referenced this pull request Aug 7, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
SquallATF pushed a commit to SquallATF/llvm-project that referenced this pull request Aug 12, 2025
## Purpose
This PR is a re-application of llvm#145575 with independent definition of
`ABI_BREAKING_EXPORT_ABI` that does not depend on
`llvm/Support/Compiler.h`. It is one in a series of code-mods that
annotate LLVM’s public interface for export. This patch annotates the
ABI Breaking Checks interface in llvm/config. The annotations currently
have no meaningful impact on the LLVM build; however, they are a
prerequisite to support an LLVM Windows DLL (shared library) build.

## Background
The effort to build LLVM as a Windows DLL is tracked in llvm#109483.
Additional context is provided in [this
discourse](https://discourse.llvm.org/t/psa-annotating-llvm-public-interface/85307),
and documentation for `LLVM_ABI` and related annotations is found in the
LLVM repo
[here](https://github.com/llvm/llvm-project/blob/main/llvm/docs/InterfaceExportAnnotations.rst).

## Validation
Local builds and tests to validate cross-platform compatibility. This
included llvm, clang, and lldb on the following configurations:

- Windows with MSVC
- Windows with Clang
- Linux with GCC
- Linux with Clang
- Darwin with Clang
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3 participants