This patch changes the mangling for __float128. I came to the conclusion that
the current code is so tangled, that it would be better to use U10__float128
rather than "e". However, if it is felt that we should go with "e", I can go
that way as well.
I have built the compiler with this patch and the previous subpatches (1-10).
I have bootstrapped the compiler with all 16 subpatches installed, and there
were no regressions. Is it ok to install in the trunk?
2015-10-22 Michael Meissner <[email protected]>
* config/rs6000/rs6000.c (rs6000_mangle_type): Use U10__float128
for IEEE 128-bit floating point.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: [email protected], phone: +1 (978) 899-4797
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c (revision 229196)
+++ gcc/config/rs6000/rs6000.c (working copy)
@@ -30052,6 +30052,21 @@ rs6000_mangle_type (const_tree type)
if (type == bool_int_type_node) return "U6__booli";
if (type == bool_long_type_node) return "U6__booll";
+ /* Use a unique name for __float128 rather than trying to use "e" or "g". Use
+ "g" for IBM extended double, no matter whether it is long double (using
+ -mabi=ibmlongdouble) or the distinct __ibm128 type. */
+ if (TARGET_FLOAT128)
+ {
+ if (type == ieee128_float_type_node)
+ return "U10__float128";
+
+ if (type == ibm128_float_type_node)
+ return "g";
+
+ if (type == long_double_type_node && TARGET_LONG_DOUBLE_128)
+ return (TARGET_IEEEQUAD) ? "U10__float128" : "g";
+ }
+
/* Mangle IBM extended float long double as `g' (__float128) on
powerpc*-linux where long-double-64 previously was the default. */
if (TYPE_MAIN_VARIANT (type) == long_double_type_node
