[gcc(refs/users/meissner/heads/work131-vpair)] Update ChangeLog.vpair

[Michael Meissner <meissner@gcc.gnu.org>]

https://gcc.gnu.org/g:c8aa634fbd31e19d643a70bbdfdcc976547023e4

commit c8aa634fbd31e19d643a70bbdfdcc976547023e4
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Aug 16 19:05:11 2023 -0400

    Update ChangeLog.vpair

Diff:
---
 gcc/ChangeLog.vpair | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog.vpair b/gcc/ChangeLog.vpair
index f7bf15392184..5fe02b4e1c77 100644
--- a/gcc/ChangeLog.vpair
+++ b/gcc/ChangeLog.vpair
@@ -1,4 +1,27 @@
-==================== Branch work131-vpair, baseline ====================
+==================== Branch work131-vpair, patch #21 ====================
+
+Move splitting vector pair to rs6000.cc
+
+2023-08-15  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config/rs6000/rs6000-protos.h (split_unary_vector_pair): New
+	declaration.
+	(split_binary_vector_pair): Likewise.
+	(split_fma_vector_pair): Likewise.
+	* config/rs6000/rs6000.cc (split_unary_vector_pair): New vector pair
+	splitter.
+	(split_binary_vector_pair): Likewise.
+	(split_fma_vector_pair): Likewise.
+	* config/rs6000/rvector-mode.md (vp_insn): Standard name for not is
+	one_cmpl.
+	(vp_vmode): New int attribute.
+	(all insns): Change to use splitter functions in rs6000.cc instead of
+	doing all splits in place.  Fix up integer negate to use subtract for
+	V16QI and V8HI modes.
+
+==================== Branch work131-vpair, patch #21 ====================
 
 Fix __vector_pair tests.