[gcc(refs/users/meissner/heads/work095)] Update ChangeLog.meissner.
Michael Meissner
meissner@gcc.gnu.org
Thu Jul 21 21:50:08 GMT 2022
https://gcc.gnu.org/g:7ebd59ea32f840ded6022bb0acefe6dbb381b674
commit 7ebd59ea32f840ded6022bb0acefe6dbb381b674
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Thu Jul 21 17:49:05 2022 -0400
Update ChangeLog.meissner.
2022-07-21 Michael Meissner <meissner@linux.ibm.com>
gcc/
* ChangeLog.meissner: Update.
Diff:
---
gcc/ChangeLog.meissner | 39 +++++++++++++++++++++------------------
1 file changed, 21 insertions(+), 18 deletions(-)
diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index e8ee95fdc9e..d36ddebdef0 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,3 +1,23 @@
+==================== work095, patch #3.
+
+Make -mblock-ops-vector-pair option valid as an ISA option.
+
+I needed to turn off using load vector pair and store vector pair
+instructions on the power10 for performance reasons. It is likely that in
+future machines, we will want to enable these instructions for block moves
+and copies. This patch adds the -mblock-ops-vector-pair option mask to
+POWERPC_MASKS so that it is automatically set and cleared as we change the
+target cpu.
+
+2022-07-19 Michael Meissner <meissner@linux.ibm.com>
+
+gcc/
+
+ * config/rs6000/rs6000-cpus.def (POWERPC_MASKS): Add
+ OPTION_MASK_BLOCK_OPS_VECTOR_PAIR.
+ * config/rs6000/rs6000.opt (-mblock-ops-vector-pair): Add a
+ comment.
+
==================== work095, patch #2.
Remove setting -mblock-ops-vector-pair on power10.
@@ -15,24 +35,7 @@ gcc/
Remove code setting -mblock-ops-vector-pair by default on
power10.
-==================== work095, patch #2.
-
-Make BLOCK_OPTS options settable with ISA flags.
-
-In wanting to turn off block moves from generating load and store vector
-pair operations on the power10, I noticed that the options for controlling
-the code block moves generate (OPTION_MASK_BLOCK_OPS_UNALIGNED_VSX and
-OPTION_MASK_BLOCK_OPS_VECTOR_PAIR) were not set in POWERPC_MASKS. It is
-possible in future CPUs we might want to enable these options
-automatically. This code moves these options to POWERPC_MASKS.
-
-2022-07-18 Michael Meissner <meissner@linux.ibm.com>
-
-gcc/
-
- * config/rs6000/rs6000-cpus.def (POWERPC_MASKS): Add
- OPTION_MASK_BLOCK_OPS_VECTOR_PAIR and
- OPTION_MASK_BLOCK_OPS_UNALIGNED_VSX.
+==================== work095, patch #1 (reverted)
==================== work095, branch setup.
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