[gcc(refs/users/meissner/heads/work094)] Update ChangeLog.meissner.

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

https://gcc.gnu.org/g:3a7ea50bb661c19084fba8e9f1804786c3990146

commit 3a7ea50bb661c19084fba8e9f1804786c3990146
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Jul 13 17:18:15 2022 -0400

    Update ChangeLog.meissner.
    
    2022-07-13   Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * ChangeLog.meissner: Update.

Diff:
---
 gcc/ChangeLog.meissner | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index d0b8bf533cc..0cbcc479aa0 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,12 +1,40 @@
 ==================== patch #1 work094 branch
 
-Update ChangeLog.meissner.
+Add long double IEEE 128-bit built-in support.
+
+This patch lays the ground work that future patches will use to add
+builtin support (both normal and overloaded) for the case where long
+double uses the IEEE 128-bit encoding.
+
+This adds a new stanza (ieee128-hw-ld) for when we have IEEE 128-bit
+hardware support and long double uses the IEEE 128-bit encoding.
+
+A new type attribute (ieeeld) is added for long double if long double uses
+the IEEE 128-bit encoding.
 
 2022-07-13   Michael Meissner  <meissner@linux.ibm.com>
 
+
 gcc/
 
-	* ChangeLog.meissner: Update.
+	* config/rs6000/rs6000-builtin.cc (rs6000_invalid_builtin): Add
+	support for ibm128-hw-ld stanza.
+	(rs6000_builtin_is_supported): Likewise.
+	(rs6000_init_builtins): Likewise.
+	(rs6000_expand_builtin): Add support for IEEE128_HW_LD.  Add
+	support for ieeeld.
+	* config/rs6000/rs6000-builtins.def (toplevel): Add comment about
+	the new ieeeld attribute.
+	* config/rs6000/rs6000-gen-builtins.cc (enum bif_stanza): Add
+	BSTZ_IEEE128_HW_LD.
+	(stanza_map): Likewise.
+	(enable_string): Likewise.
+	(attrinfo): Add isieeeld.
+	(parse_bif_attrs): Parse ieeeld.  Add printing ieeeld to the debug
+	print.
+	(write_decls): Add support for ibm128-hw-ld stanza and ieeeld
+	attribute.
+	(write_bif_static_init): Add support for ieeeld attribute.
 
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