[gcc(refs/users/meissner/heads/work095)] Update ChangeLog.meissner.

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

https://gcc.gnu.org/g:c5e2fff182fe86c0fa19985e1b1998b3447b988c

commit c5e2fff182fe86c0fa19985e1b1998b3447b988c
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Fri Jul 29 01:57:43 2022 -0400

    Update ChangeLog.meissner.
    
    2022-07-29   Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * ChangeLog.meissner: Update.

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

diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index 6a6baccb60f..70efe3d3163 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,5 +1,60 @@
 ==================== work095, patch #14.
 
+Make __float128 and __ibm128 use different types from long double.
+
+2022-07-29   Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config/rs6000/rs6000-builtin.cc (rs6000_init_builtins): Always
+	create a new tree node for __ibm128, even if long double uses the IBM
+	128-bit format.  Always create a new tree node for __float128, even if
+	long double uses the IEEE 128-bit format.
+	* config/rs6000/rs600.cc (rs6000_expand_builtin): Remove code that
+	converted the KFmode and IFmode built-in functions to TFmode depending
+	on what the long double format is, and use built-in overloading
+	instead.
+	(init_float128_ieee): Remove setting up KFmode complex multiply and
+	divide here.
+	(rs6000_init_libfuncs): Rewrite the setup for complex multiply and
+	divide for long double if long double uses the IEEE 128-bit encoding.
+	(rs6000_scalar_mode_supported_p): Allow __ibm128 even if we don't
+	support _Float128.
+	(rs6000_libgcc_floating_mode_supported_p): Allow KFmode if IEEE
+	128-bit floating point is supported.  Allow IFmode if either IEEE
+	128-bit floating point is supported or long double is IBM 128-bit.
+	(rs6000_floatn_mode): Always return KFmode for IEEE 128-bit.  Do not
+	return TFmode, even if long double uses the IEEE 128-bit format.
+	(rs6000_c_mode_for_suffix): The 'q' suffix always uses KFmode, even if
+	long double uses the IEEE 128-bit encoding.
+	* config/rs6000/rs6000.md (IFKF): Delete.
+	(IFKF_reg): Delete.
+	(trunckfif2): New insn.
+	(trunctfif2): Likewise.
+	(extendkftf2_internal): Split extend<mode>tf2_internal and
+	extendtf<mode>2_internal into separate insns that handle either
+	conversions between IEEE 128-bit types or between IBM 128-bit types.
+	Set the type and insn length correctly.
+	(extendtfkf2_internal): Likewise.
+	(extendiftf2_internal): Likewise.
+	(extendtfif2_internal): Likewise.
+
+gcc/testsuite/
+
+	* gcc.target/powerpc/mulkc3-2.c: Update test.
+	* gcc.target/powerpc/divkc3-2.c: Likewise.
+
+libgcc/
+
+	* config/rs6000/float128-ifunc.c (__multc3_ieee128): Add ifunc
+	support.
+	(__divtc3_ieee128): Likewise.
+	* config/rs6000/quad-float128.h (__multc3_ieee128): Add
+        declaration.
+        (__divtc3_ieee128): Likewise.
+
+==================== work095, patch #14.
+
 Allow __ibm128 even if IEEE 128-bit floating point is not supported.
 
 This set of patches fixes places in the compiler where it was assumed to use