diff --git a/Misc/NEWS.d/next/Build/2025-01-14-17-38-47.gh-issue-128514.K50gQv.rst b/Misc/NEWS.d/next/Build/2025-01-14-17-38-47.gh-issue-128514.K50gQv.rst
new file mode 100644
index 00000000000000..0ffb87dd557c77
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-01-14-17-38-47.gh-issue-128514.K50gQv.rst
@@ -0,0 +1,2 @@
+Enable ``-split-all-cold`` during BOLT optmizations which outlines as many
+cold basic blocks as possible.
diff --git a/configure b/configure
index 70581e11b60682..17178c5809a010 100755
--- a/configure
+++ b/configure
@@ -9429,7 +9429,7 @@ printf "%s\n" "$BOLT_INSTRUMENT_FLAGS" >&6; }
 printf %s "checking BOLT_APPLY_FLAGS... " >&6; }
 if test -z "${BOLT_APPLY_FLAGS}"
 then
-  BOLT_APPLY_FLAGS=" ${BOLT_COMMON_FLAGS} -reorder-blocks=ext-tsp -reorder-functions=cdsort -split-functions -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot "
+  BOLT_APPLY_FLAGS=" ${BOLT_COMMON_FLAGS} -reorder-blocks=ext-tsp -reorder-functions=cdsort -split-functions -split-all-cold -icf=1 -inline-all -split-eh -reorder-functions-use-hot-size -peepholes=none -jump-tables=aggressive -inline-ap -indirect-call-promotion=all -dyno-stats -use-gnu-stack -frame-opt=hot "
 
 fi
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $BOLT_APPLY_FLAGS" >&5
diff --git a/configure.ac b/configure.ac
index d7c3920d049d67..c49b6501bd0192 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2218,6 +2218,7 @@ then
      -reorder-blocks=ext-tsp
      -reorder-functions=cdsort
      -split-functions
+     -split-all-cold
      -icf=1
      -inline-all
      -split-eh