[gcc(refs/users/meissner/heads/work230)] Update ChangeLog.*

[Michael Meissner]

https://gcc.gnu.org/g:330f88297539e6c42f411012016b1ab42c0944c7

commit 330f88297539e6c42f411012016b1ab42c0944c7
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Thu Dec 4 18:31:03 2025 -0500

    Update ChangeLog.*

Diff:
---
 gcc/ChangeLog.meissner | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index 0c8ed4a6e569..7670adfe22e7 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,3 +1,58 @@
+==================== Branch work230, patch #1 ====================
+
+Add -mcpu=future.
+
+This patch adds support for a new PowerPC cpu (future).  Until it is announced,
+the features of future processors may be changed.  These patches allow people to
+use the new features of processors being developed.  If/when the a processor is
+announced that has the features, future GCC revisions will be modified to add
+support for that new machine.
+
+If the features provided by -mcpu=future are incorporated into an official
+PowerPC server, this option will be renamed to the official name for that
+platform.
+
+This is version 9 of the -mcpu=future patch.
+
+If the user uses -mcpu=future, -mfuture is passed to the assembler.
+
+I added support so that if GCC is configured with the --with-cpu=future option
+is used, it will set the default cpu type.
+
+Can I check this patch into the GCC trunk?  I have built bootstrap
+builds on both a little endian Power10 system and a big endian Power9
+system and there were no regressions.  On the little endian Power10
+system, I built the last run using the --with-cpu=future configuration
+option.
+
+2025-12-04  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config.gcc (powerpc*-*-*): Add support for -mcpu=future.
+	* config/rs6000/aix71.h (ASM_CPU_SPEC): Add support for -mcpu=future.
+	* config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.
+	* config/rs6000/aix73.h (ASM_CPU_SPEC): Likewise.
+	* config/rs6000/rs6000-c.cc (rs6000_target_modify_macros): Define
+	_ARCH_FUTURE if -mcpu=future.
+	* config/rs6000/rs6000-cpus.def (FUTURE_MASKS_SERVER): New macro.
+	(POWERPC_MASKS): Add OPTION_MASK_FUTURE.
+	(rs6000_cpu_opt_value): New entry for 'future' via the RS6000_CPU macro.
+	* config/rs6000/rs6000-opts.h (PROCESSOR_FUTURE): New macro.
+	* config/rs6000/rs6000-tables.opt: Regenerate.
+	* config/rs6000/rs6000.cc (rs6000_machine_from_flags) If -mcpu=future,
+	set the .machine directive to "future".
+	(rs6000_opt_masks): Add entry for -mfuture.
+	* config/rs6000/rs6000.h (ASM_CPU_SPEC): Add support for -mcpu=future.
+	* config/rs6000/rs6000.opt (-mfuture): New option.
+	* doc/invoke.texi (IBM RS/6000 and PowerPC Options): Document
+	-mcpu=future.
+
+gcc/testsuite/
+
+	* gcc.target/powerpc/future-1.c: New test.
+	* gcc.target/powerpc/future-2.c: Likewise.
+
 ==================== Branch work230, baseline ====================
 
 2025-12-04   Michael Meissner  <meissner@linux.ibm.com>