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PR #32812: [XLA:CPU] Add support for riscv64

Imported from GitHub PR #32812

Co-author: @kxxt

📝 Summary of Changes:

This pull request adds support for RISC-V 64 architecture across the build system, code generation, and Python packaging infrastructure.

🎯 Justification:

The changes ensure that riscv64 is recognized as a valid target in Bazel build configurations, LLVM toolchain selection, Python manylinux compliance checks, and related tests and patches. This allows the project to build and test components for riscv64 alongside other supported architectures.

🚀 Kind of Contribution: ✨ New Feature

Copybara import of the project:

--
0d02393 by gns [email protected]:

[XLA:CPU] Add support for riscv64

Co-authored-by: Levi Zim [email protected]

--
5d95fb4 by gns [email protected]:

Refresh rules_python riscv64 patch

Co-authored-by: Levi Zim [email protected]

Merging this change closes #32812

FUTURE_COPYBARA_INTEGRATE_REVIEW=#32812 from infiWang:riscv64 5d95fb4

Imported from GitHub PR #32812

Co-author: @kxxt

📝 Summary of Changes:

This pull request adds support for RISC-V 64 architecture across the build system, code generation, and Python packaging infrastructure.

🎯 Justification:

The changes ensure that riscv64 is recognized as a valid target in Bazel build configurations, LLVM toolchain selection, Python manylinux compliance checks, and related tests and patches. This allows the project to build and test components for riscv64 alongside other supported architectures.

🚀 Kind of Contribution: ✨ New Feature

Copybara import of the project:

--
0d02393 by gns <[email protected]>:

[XLA:CPU] Add support for riscv64

Co-authored-by: Levi Zim <[email protected]>

--
5d95fb4 by gns <[email protected]>:

Refresh `rules_python` riscv64 patch

Co-authored-by: Levi Zim <[email protected]>

Merging this change closes #32812

COPYBARA_INTEGRATE_REVIEW=#32812 from infiWang:riscv64 5d95fb4
PiperOrigin-RevId: 828379922
@copybara-service copybara-service bot merged commit 9c49541 into main Nov 5, 2025
@copybara-service copybara-service bot deleted the test_827890705 branch November 5, 2025 10:53
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