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rs6000: AIX long double builtins for 64 bit long double.

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When long doubles are 64 bit, the AIX C library overrides the definitions
but GCC builtins point to 128 bit names.  This patch overrides the
builtins for fmodl, frexpl, ldexpl and modfl to refer to the 64 bit symbols.

2020-05-04  Clement Chigot  <clement.chigot@atos.net>
	    David Edelsohn  <dje.gcc@gmail.com>

	* config/rs6000/rs6000-call.c (rs6000_init_builtins): Override explicit
	for fmodl, frexpl, ldexpl and modfl builtins.
This commit is contained in:
David Edelsohn 2020-04-30 11:29:32 -04:00
parent 3af3bec2e4
commit 5e681acd35
2 changed files with 28 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2020-05-04 Clement Chigot <clement.chigot@atos.net>
David Edelsohn <dje.gcc@gmail.com>
* config/rs6000/rs6000-call.c (rs6000_init_builtins): Override explicit
for fmodl, frexpl, ldexpl and modfl builtins.
2020-05-04 Richard Sandiford <richard.sandiford@arm.com>
PR middle-end/94941

26
gcc/config/rs6000/rs6000-call.c
View file

@ -12070,10 +12070,28 @@ rs6000_init_builtins (void)
def_builtin ("__builtin_cpu_is", ftype, RS6000_BUILTIN_CPU_IS);
def_builtin ("__builtin_cpu_supports", ftype, RS6000_BUILTIN_CPU_SUPPORTS);
/* AIX libm provides clog as __clog. */
if (TARGET_XCOFF &&
(tdecl = builtin_decl_explicit (BUILT_IN_CLOG)) != NULL_TREE)
set_user_assembler_name (tdecl, "__clog");
if (TARGET_XCOFF)
{
/* AIX libm provides clog as __clog. */
if ((tdecl = builtin_decl_explicit (BUILT_IN_CLOG)) != NULL_TREE)
set_user_assembler_name (tdecl, "__clog");
/* When long double is 64 bit, some long double builtins of libc
functions (like __builtin_frexpl) must call the double version
(frexp) not the long double version (frexpl) that expects a 128 bit
argument. */
if (! TARGET_LONG_DOUBLE_128)
{
if ((tdecl = builtin_decl_explicit (BUILT_IN_FMODL)) != NULL_TREE)
set_user_assembler_name (tdecl, "fmod");
if ((tdecl = builtin_decl_explicit (BUILT_IN_FREXPL)) != NULL_TREE)
set_user_assembler_name (tdecl, "frexp");
if ((tdecl = builtin_decl_explicit (BUILT_IN_LDEXPL)) != NULL_TREE)
set_user_assembler_name (tdecl, "ldexp");
if ((tdecl = builtin_decl_explicit (BUILT_IN_MODFL)) != NULL_TREE)
set_user_assembler_name (tdecl, "modf");
}
}
#ifdef SUBTARGET_INIT_BUILTINS
SUBTARGET_INIT_BUILTINS;