[gcc(refs/users/meissner/heads/work223-test)] Update ChangeLog.*

[Michael Meissner]

https://gcc.gnu.org/g:863ebed6a224358cf76a85d1a6a9a1c9b4ccc8d3

commit 863ebed6a224358cf76a85d1a6a9a1c9b4ccc8d3
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Fri Oct 31 18:37:20 2025 -0400

    Update ChangeLog.*

Diff:
---
 gcc/ChangeLog.test              | 25 +++++++++++++++++++++++++
 libstdc++-v3/ChangeLog.meissner | 25 +++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/gcc/ChangeLog.test b/gcc/ChangeLog.test
index 98c6e0f8ec53..4f1dfd40a5b3 100644
--- a/gcc/ChangeLog.test
+++ b/gcc/ChangeLog.test
@@ -1,3 +1,28 @@
+==================== Branch work223-test, patch #428 ====================
+
+Add --with-powerpc-16bit-floating-point.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config.gcc (powerpc*-*-*): Add support for the configuration option
+	--with-powerpc-16bit-floating-point.
+	* config/rs6000/rs6000-cpus.def (TARGET_16BIT_FLOATING_POINT): Likewise.
+	(ISA_2_7_MASKS_SERVER): Likewise.
+	(POWERPC_MASKS): Likewise.
+
+==================== Branch work223-test, patch #427 ====================
+
+Fix __bfloat16 signalling NaN support on PowerPC.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+libstdc++-v3/
+
+	* include/limits (__bfloat16 signaling_NaN): Use __builtin_nansf and
+	convert it to __bfloat16 instead of using __builtin_nansf16b.
+
 ==================== Branch work223-test, patch #426 ====================
 
 Add 16-bit floating point vectorization.
diff --git a/libstdc++-v3/ChangeLog.meissner b/libstdc++-v3/ChangeLog.meissner
index 0d82ea4ddd71..698329d074e6 100644
--- a/libstdc++-v3/ChangeLog.meissner
+++ b/libstdc++-v3/ChangeLog.meissner
@@ -1,3 +1,28 @@
+==================== Branch work223, patch #428 ====================
+
+Add --with-powerpc-16bit-floating-point.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config.gcc (powerpc*-*-*): Add support for the configuration option
+	--with-powerpc-16bit-floating-point.
+	* config/rs6000/rs6000-cpus.def (TARGET_16BIT_FLOATING_POINT): Likewise.
+	(ISA_2_7_MASKS_SERVER): Likewise.
+	(POWERPC_MASKS): Likewise.
+
+==================== Branch work223, patch #427 ====================
+
+Fix __bfloat16 signalling NaN support on PowerPC.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+libstdc++-v3/
+
+	* include/limits (__bfloat16 signaling_NaN): Use __builtin_nansf and
+	convert it to __bfloat16 instead of using __builtin_nansf16b.
+
 ==================== Branch work223, baseline ====================
 
 2025-10-20   Michael Meissner  <meissner@linux.ibm.com>