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gh-128472: Add -skip-funcs to BOLT options to fix computed goto errors #128511

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Merged
merged 2 commits into from
Jan 7, 2025
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gh-128472: Add -skip-funcs to BOLT options to fix computed goto errors #128511

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Add `-skip-funcs` to BOLT options to fix computed goto errors
zanieb Jan 4, 2025
fa5045b
NEWS
zanieb Jan 5, 2025
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Skip BOLT optimization of functions using computed gotos, fixing errors on
build with LLVM 19.
2 changes: 1 addition & 1 deletion configure
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9 changes: 8 additions & 1 deletion configure.ac
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Expand Up @@ -2170,7 +2170,14 @@ if test -z "${BOLT_COMMON_FLAGS}"
then
AS_VAR_SET(
[BOLT_COMMON_FLAGS],
[-update-debug-sections]
[m4_normalize("
[-update-debug-sections]

dnl At least LLVM 19.x doesn't support computed gotos in PIC compiled code.
dnl Exclude functions containing computed gotos.
dnl TODO this may be fixed in LLVM 20.x via https://github.com/llvm/llvm-project/pull/120267.
[-skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1]
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@corona10 corona10 Jan 5, 2025 •
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Now we have reasons to add CI to maintain this list actively.

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ref #128515

")]
)
fi

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