tm.texi (TARGET_HAS_SINCOS): Document new target macro.

2007-01-19  Richard Guenther  <rguenther@suse.de>

	* doc/tm.texi (TARGET_HAS_SINCOS): Document new target macro.
	* defaults.h (TARGET_HAS_SINCOS): Default to off.
	* config/linux.h (TARGET_HAS_SINCOS): Set to on if we have glibc.
	* config/alpha/linux.h (TARGET_HAS_SINCOS): Likewise.
	* config/sparc/linux.h (TARGET_HAS_SINCOS): Likewise.
	* config/sparc/linux64.h (TARGET_HAS_SINCOS): Likewise.
	* config/rs6000/linux.h (TARGET_HAS_SINCOS): Likewise.
	* config/rs6000/linux64.h (TARGET_HAS_SINCOS): Likewise.

From-SVN: r120952

gcc/ChangeLog

+2007-01-19  Richard Guenther  <rguenther@suse.de>
+
+	* doc/tm.texi (TARGET_HAS_SINCOS): Document new target macro.
+	* defaults.h (TARGET_HAS_SINCOS): Default to off.
+	* config/linux.h (TARGET_HAS_SINCOS): Set to on if we have glibc.
+	* config/alpha/linux.h (TARGET_HAS_SINCOS): Likewise.
+	* config/sparc/linux.h (TARGET_HAS_SINCOS): Likewise.
+	* config/sparc/linux64.h (TARGET_HAS_SINCOS): Likewise.
+	* config/rs6000/linux.h (TARGET_HAS_SINCOS): Likewise.
+	* config/rs6000/linux64.h (TARGET_HAS_SINCOS): Likewise.
+
 2007-01-19  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (*fpatanxf3_i387, fpatan_extend<mode>xf3_i387):

gcc/config/alpha/linux.h

@@ -66,6 +66,9 @@ Boston, MA 02110-1301, USA.  */
    runtime library.  */
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #define TARGET_POSIX_IO
 
 #define LINK_GCC_C_SEQUENCE_SPEC \

gcc/config/linux.h

@@ -126,4 +126,7 @@ Boston, MA 02110-1301, USA.  */
    is present in the runtime library.  */
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #define TARGET_POSIX_IO

gcc/config/rs6000/linux.h

@@ -35,6 +35,10 @@
 #undef  TARGET_C99_FUNCTIONS
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#undef  TARGET_HAS_SINCOS
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #undef  TARGET_OS_CPP_BUILTINS
 #define TARGET_OS_CPP_BUILTINS()		\
   do						\

gcc/config/rs6000/linux64.h

@@ -285,6 +285,10 @@ extern int dot_symbols;
 #undef  TARGET_C99_FUNCTIONS
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#undef  TARGET_HAS_SINCOS
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #undef  TARGET_OS_CPP_BUILTINS
 #define TARGET_OS_CPP_BUILTINS()			\
   do							\

gcc/config/sparc/linux.h

@@ -215,6 +215,9 @@ do {									\
    runtime library.  */
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #define TARGET_POSIX_IO
 
 #undef LINK_GCC_C_SEQUENCE_SPEC

gcc/config/sparc/linux64.h

@@ -347,6 +347,9 @@ do {									\
    runtime library.  */
 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
 #define TARGET_POSIX_IO
 
 #undef LINK_GCC_C_SEQUENCE_SPEC

gcc/defaults.h

@@ -796,6 +796,12 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #define TARGET_C99_FUNCTIONS 0
 #endif
 
+/* Determine whether the target runtime library has
+   a sincos implementation following the GNU extension.  */
+#ifndef TARGET_HAS_SINCOS
+#define TARGET_HAS_SINCOS 0
+#endif
+
 /* Indicate that CLZ and CTZ are undefined at zero.  */
 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE)  0

gcc/doc/tm.texi

@@ -5061,6 +5061,18 @@ number of existing systems lacks support for these functions in the runtime so
 they needs this macro to be redefined to 0.
 @end defmac
 
+@cindex sincos math function, implicit usage
+@defmac TARGET_HAS_SINCOS
+When this macro is nonzero, GCC will implicitly optimize calls to @code{sin}
+and @code{cos} with the same argument to a call to @code{sincos}.  The
+default is zero.  The target has to provide the following functions:
+@smallexample
+void sincos(double x, double *sin, double *cos);
+void sincosf(float x, float *sin, float *cos);
+void sincosl(long double x, long double *sin, long double *cos);
+@end smallexample
+@end defmac
+
 @defmac NEXT_OBJC_RUNTIME
 Define this macro to generate code for Objective-C message sending using
 the calling convention of the NeXT system.  This calling convention