https://github.com/python/cpython/commit/692a955cea019274b16e0132732be761d48b2606
commit: 692a955cea019274b16e0132732be761d48b2606
branch: 3.13
author: Miss Islington (bot) <[email protected]>
committer: corona10 <[email protected]>
date: 2025-01-08T01:59:20+09:00
summary:

[3.13] gh-128472: Add `-skip-funcs` to BOLT options to fix computed goto errors 
(gh-128511) (#128573)

gh-128472: Add `-skip-funcs` to BOLT options to fix computed goto errors 
(gh-128511)

* Add `-skip-funcs` to BOLT options to fix computed goto errors



* NEWS

---------

(cherry picked from commit 24b147a19b360c49cb1740aa46211d342aaa071f)

Co-authored-by: Zanie Blue <[email protected]>
Co-authored-by: Gregory Szorc <[email protected]>

files:
A Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
M configure
M configure.ac

diff --git 
a/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst 
b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
new file mode 100644
index 00000000000000..c6233e1f2d8693
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst
@@ -0,0 +1,2 @@
+Skip BOLT optimization of functions using computed gotos, fixing errors on
+build with LLVM 19.
diff --git a/configure b/configure
index 0d8a9ffa8a2605..ff8e29de1439ec 100755
--- a/configure
+++ b/configure
@@ -9335,7 +9335,7 @@ fi
 printf %s "checking BOLT_COMMON_FLAGS... " >&6; }
 if test -z "${BOLT_COMMON_FLAGS}"
 then
-  BOLT_COMMON_FLAGS=-update-debug-sections
+  BOLT_COMMON_FLAGS=" -update-debug-sections 
-skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1
 "
 
 fi
 
diff --git a/configure.ac b/configure.ac
index b3e112a0a181d6..dd4e0b4723c1d3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2224,7 +2224,14 @@ 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]
+    ")]
   )
 fi
 

_______________________________________________
Python-checkins mailing list -- [email protected]
To unsubscribe send an email to [email protected]
https://mail.python.org/mailman3/lists/python-checkins.python.org/
Member address: [email protected]

Reply via email to