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[3.14] GH-136895: Update JIT builds to use LLVM 21 (GH-140329)#146420
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mcepl wants to merge 3 commits intopython:3.14from
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[3.14] GH-136895: Update JIT builds to use LLVM 21 (GH-140329)#146420mcepl wants to merge 3 commits intopython:3.14from
mcepl wants to merge 3 commits intopython:3.14from
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- Enable x86_64 trampoline support on all x86_64 platforms, not just macOS. While currently only macOS emits X86_64_RELOC_BRANCH relocations, this ensures the trampoline infrastructure is ready if future LLVM changes produce out-of-range calls on other x86_64 platforms.- Add error handling to extract_tarball() in get_external.py so that corrupted or incomplete downloads produce a clear error message instead of an opaque traceback.- Replace hardcoded LLVM version check in get_externals.bat with a prefix-based 'llvm-' match using findstr, so future LLVM version bumps only require changing the version string in one place.
Bump the JIT toolchain from LLVM 20 to LLVM 21 (21.1.8). Updatedacross CI workflows, build scripts, documentation, and the externalstag.
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Backport ofGH-140329 to 3.14, with the addition of:
Enable x86_64 trampoline support on all x86_64 platforms, not just
macOS. While currently only macOS emits X86_64_RELOC_BRANCH
relocations, this ensures the trampoline infrastructure is ready if
future LLVM changes produce out-of-range calls on other x86_64
platforms.
Add error handling to extract_tarball() in get_external.py so that
corrupted or incomplete downloads produce a clear error message
instead of an opaque traceback.
Replace hardcoded LLVM version check in get_externals.bat with
a prefix-based 'llvm-' match using findstr, so future LLVM version
bumps only require changing the version string in one place.
Also, bump the JIT toolchain from LLVM 20 to LLVM 21 (21.1.8). Updated across
CI workflows, build scripts, documentation, and the externals tag.