[gcc(refs/users/meissner/heads/work106)] Update ChangeLog.meissner

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

https://gcc.gnu.org/g:b20365c9ee99892240353f84454a93451c107ff8

commit b20365c9ee99892240353f84454a93451c107ff8
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Wed Jan 18 11:20:40 2023 -0500

    Update ChangeLog.meissner

Diff:
---
 gcc/ChangeLog.meissner | 46 ++++++++++++++--------------------------------
 1 file changed, 14 insertions(+), 32 deletions(-)

diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner
index 31893ab4dc9..d926b059004 100644
--- a/gcc/ChangeLog.meissner
+++ b/gcc/ChangeLog.meissner
@@ -1,4 +1,4 @@
-==================== work106, patch #6 ====================
+==================== work106, patch #7 ====================
 
 PR target/107299: Fix build issue when long double is IEEE 128-bit
 
@@ -8,13 +8,10 @@ At the moment, we cannot build GCC when the target uses IEEE 128-bit long
 doubles, such as building the compiler for a native Fedora 36 system.  The
 build dies when it is trying to build the _mulkc3.c and _divkc3 modules.
 
-This patch creates special types for declaring complex IEEE 128-bit multiply and
-divide support to use either _Float128 or long double, depending on whether long
-double is IBM or IEEE.
-
-It also uses the correct built-in functions in the libgcc complex IEEE 128-bit
-multiply and divide support.  This fixes the problems when long double types are
-used with explicit f128 built-in functions.
+This patch changes libgcc to use long double for the IEEE 128-bit base type if
+long double is IEEE 128-bit, and it uses _Float128 otherwise.  The built-in
+functions are adjusted to be the correct version based on the IEEE 128-bit base
+type used.
 
 While it is desirable to ultimately have __float128 and _Float128 use the same
 internal type and mode within GCC, at present if you use the option
@@ -29,11 +26,6 @@ fix the compiler at some point, but right now, this is preventing people on
 Fedora 36 systems from building compilers where the default long double is IEEE
 128-bit.
 
-I changed the three functions that deal with complex multiply and complex divide
-support (_mulkc3, _divkc3, and float128-ifunc) to always be compiled with IEEE
-128-bit long double.  This is to be type correct, and avoid mismatch declaration
-errors from the compiler.
-
 2023-01-18   Michael Meissner  <meissner@linux.ibm.com>
 
 	PR target/107299
@@ -41,26 +33,16 @@ errors from the compiler.
 	whether long double is IBM or IEEE.
 	(INFINITY): Likewise.
 	(FABS): Likewise.
-	(__divkc3): Use either _Float128 or long double for the types to match
-	whether long double is IBM or IEEE.
-	* config/rs6000/_mulkc3.c (COPYSIGN): Use the correct built-in based on
-	whether long double is IBM or IEEE.
+	* config/rs6000/_mulkc3.c (COPYSIGN): Likewise.
 	(INFINITY): Likewise.
-	(__mulkc3): Use either _Float128 or long double for the types to match
-	whether long double is IBM or IEEE.
-	* config/rs6000/float128-ifunc.c (__mulkc3): Use either _Float128 or
-	long double for the types to match whether long double is IBM or IEEE.
-	(__divkc3): Likewise.
-	* config/rs6000/quad-float128.h (TC): Define to switch complex IEEE
-	128-bit type in machine independent code via mode attribute.
-	(TFtype_cmuldiv): New macro.
-	(TCtype_cmuldiv): Likewise.
-	(__mulkc3_sw): Use TFtype_cmuldiv and TCtype_cmuldiv.
-	(__divkc3_sw): Likewise.
-	(__mulkc3_hw): Likewise.
-	(__divkc3_hw): Likewise.
-	(__mulkc3): Likewise.
-	(__divkc3): Likewise.
+	* config/rs6000/quad-float128.h (TF): Remove definition.
+	(TFtype): Define to be long double or _Float128.
+	(TCtype): Define to be _Complex long double or _Complex _Float128.
+	* libgcc2.h (TFtype): Allow machine config files to override this.
+	(TCtype): Likewise.
+	* soft-fp/quad.h (TFtype): Likewise.
+
+==================== work106, patch #6 was reverted ====================
 
 ==================== work106, patch #5 was reverted ====================