https://gcc.gnu.org/g:1a6b43ee71f98f861702a8e1c5f0bcc7181a75bb
commit 1a6b43ee71f98f861702a8e1c5f0bcc7181a75bb
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Fri Jun 13 22:58:27 2025 -0400
Update ChangeLog.*
Diff:
---
gcc/ChangeLog.meissner | 108 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 108 insertions(+)
diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index 1cbe8f5ec9e5..d5e968750f3a 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,3 +1,111 @@
+==================== Branch work211, patch #4 ====================
+
+Use vector pair load/store for memcpy with -mcpu=future
+
+This is patch #4 of 4 to add -mcpu=future support to the PowerPC.
+
+In the development for the power10 processor, GCC did not enable using the load
+vector pair and store vector pair instructions when optimizing things like
+memory copy. This patch enables using those instructions if -mcpu=future is
+used.
+
+I have tested these patches on both big endian and little endian PowerPC
+servers, with no regressions. Can I check these patchs into the trunk?
+
+2025-06-13 Michael Meissner <meiss...@linux.ibm.com>
+
+gcc/
+
+ * config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Enable using
+ load vector pair and store vector pair instructions for memory copy
+ operations.
+ (POWERPC_MASKS): Make the bit for enabling using load vector pair and
+ store vector pair operations set and reset when the PowerPC processor is
+ changed.
+ * gcc/config/rs6000/rs6000.cc (rs6000_machine_from_flags): Disable
+ -mblock-ops-vector-pair from influcing .machine selection.
+
+gcc/testsuite/
+
+ * gcc.target/powerpc/future-3.c: New test.
+
+==================== Branch work211, patch #3 ====================
+
+Add -mcpu=future tests.
+
+This is patch #3 of 4 to add -mcpu=future support to the PowerPC.
+
+This patch adds simple tests for -mcpu=future.
+
+I have tested these patches on both big endian and little endian PowerPC
+servers, with no regressions. Can I check these patchs into the trunk?
+
+2025-06-13 Michael Meissner <meiss...@linux.ibm.com>
+
+gcc/testsuite/
+
+ * gcc.target/powerpc/future-1.c: New test.
+ * gcc.target/powerpc/future-2.c: Likewise.
+
+==================== Branch work211, patch #2 ====================
+
+Add -mcpu=future tuning support.
+
+This is patch #2 of 4 to add -mcpu=future support to the PowerPC.
+
+This patch makes -mtune=future use the same tuning decision as -mtune=power10
or
+-mtune=power11.
+
+I have tested these patches on both big endian and little endian PowerPC
+servers, with no regressions. Can I check these patchs into the trunk?
+
+2025-06-13 Michael Meissner <meiss...@linux.ibm.com>
+
+gcc/
+
+ * config/rs6000/power10.md (all reservations): Add future as an
+ alterntive to power10 and power11.
+
+==================== Branch work211, patch #1 ====================
+
+Add support for -mcpu=future
+
+This is patch #1 of 4 that adds the support that can be used in developing GCC
+support for future PowerPC processors.
+
+I have tested these patches on both big endian and little endian PowerPC
+servers, with no regressions. Can I check these patchs into the trunk?
+
+2025-06-13 Michael Meissner <meiss...@linux.ibm.com>
+
+ * config.gcc (powerpc*-*-*): Add support for --with-cpu=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/driver-rs6000.cc (asm_names): Likewise.
+ * config/rs6000/rs6000-c.cc (rs6000_target_modify_macros): If
+ -mcpu=future, define _ARCH_FUTURE.
+ * config/rs6000/rs6000-cpus.def (FUTURE_MASKS_SERVER): New macro.
+ (POWERPC_MASKS): Add OPTION_MASK_FUTURE.
+ (future cpu): Define.
+ * config/rs6000/rs6000-opts.h (enum processor_type): Add
+ PROCESSOR_FUTURE.
+ * config/rs6000/rs6000-tables.opt: Regenerate.
+ * config/rs6000/rs6000.cc (power10_cost): Update comment.
+ (get_arch_flags): Add support for future processor.
+ (rs6000_option_override_internal): Likewise.
+ (rs6000_machine_from_flags): Likewise.
+ (rs6000_reassociation_width): Likewise.
+ (rs6000_adjust_cost): Likewise.
+ (rs6000_issue_rate): Likewise.
+ (rs6000_sched_reorder): Likewise.
+ (rs6000_sched_reorder2): Likewise.
+ (rs6000_register_move_cost): Likewise.
+ (rs6000_opt_masks): Add -mfuture.
+ * config/rs6000/rs6000.h (ASM_CPU_SPEC): Likewise.
+ * config/rs6000/rs6000.md (cpu attribute): Likewise.
+ * config/rs6000/rs6000.opt (-mfuture): New internal option.
+
==================== Branch work211, baseline ====================
2025-06-13 Michael Meissner <meiss...@linux.ibm.com>
