[3.13] gh-128437: Add BOLT_COMMON_FLAGS with `-update-debug-section…

…s` (gh-128455) (gh-128512)

gh-128437: Add `BOLT_COMMON_FLAGS` with `-update-debug-sections` (gh-128455)

Add `BOLT_COMMON_FLAGS` with `-update-debug-sections`

(cherry picked from commit b60044b)

Co-authored-by: Zanie Blue <contact@zanie.dev>
Co-authored-by: Gregory Szorc <gregory.szorc@gmail.com>

configure.ac

@@ -2214,14 +2214,28 @@ AS_VAR_IF([enable_shared], [yes], [
   BOLT_BINARIES="${BOLT_BINARIES} \$(INSTSONAME)"
 ])
 
+AC_ARG_VAR(
+  [BOLT_COMMON_FLAGS],
+  [Common arguments to llvm-bolt when instrumenting and applying]
+)
+
+AC_MSG_CHECKING([BOLT_COMMON_FLAGS])
+if test -z "${BOLT_COMMON_FLAGS}"
+then
+  AS_VAR_SET(
+    [BOLT_COMMON_FLAGS],
+    [-update-debug-sections]
+  )
+fi
+
 AC_ARG_VAR(
   [BOLT_INSTRUMENT_FLAGS],
   [Arguments to llvm-bolt when instrumenting binaries]
 )
 AC_MSG_CHECKING([BOLT_INSTRUMENT_FLAGS])
 if test -z "${BOLT_INSTRUMENT_FLAGS}"
 then
-  BOLT_INSTRUMENT_FLAGS=
+  BOLT_INSTRUMENT_FLAGS="${BOLT_COMMON_FLAGS}"
 fi
 AC_MSG_RESULT([$BOLT_INSTRUMENT_FLAGS])
 
@@ -2235,7 +2249,7 @@ then
   AS_VAR_SET(
     [BOLT_APPLY_FLAGS],
     [m4_normalize("
-     -update-debug-sections
+     ${BOLT_COMMON_FLAGS}
      -reorder-blocks=ext-tsp
      -reorder-functions=cdsort
      -split-functions