diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 48e150d572b..5cc43984101 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2024-07-30  Lingling Kong  <lingling.kong@intel.com>
+
+	PR target/115978
+	* config/i386/driver-i386.cc (host_detect_local_cpu):  Enable
+	APX_F only for 64-bit codegen.
+	* config/i386/i386-options.cc (DEF_PTA):  Skip PTA_APX_F if
+	not in 64-bit mode.
+
 2024-07-29  Richard Biener  <rguenther@suse.de>
 
 	Backported from master:
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index d42ae94bcd3..e2dab5541a0 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20240730
+20240731
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 07e820d9ac4..9063730a373 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2024-07-30  Lingling Kong  <lingling.kong@intel.com>
+
+	PR target/115978
+	* gcc.target/i386/pr115978-1.c: New test.
+	* gcc.target/i386/pr115978-2.c: Ditto.
+
 2024-07-29  Marek Polacek  <polacek@redhat.com>
 
 	Backported from master: