re PR target/6540 (sparc-sun-solaris2.7 (perhaps all bi-arch sparc) fail…

re PR target/6540 (sparc-sun-solaris2.7 (perhaps all bi-arch sparc) fail libstdc++-v3 18_support/numeric_limits.cc)

2002-05-02  Jakub Jelinek  <jakub@redhat.com>

	PR target/6540
	* config.gcc (sparc*-*-solaris2*): Set float_format to i128.
	* config/float-sparc.h: Assume 128-bit long double if
	__LONG_DOUBLE_128__ is defined.

From-SVN: r53069

gcc/ChangeLog

+2002-05-02  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/6540
+	* config.gcc (sparc*-*-solaris2*): Set float_format to i128.
+	* config/float-sparc.h: Assume 128-bit long double if
+	__LONG_DOUBLE_128__ is defined.
+
 2002-05-02  Vladimir Makarov  <vmakarov@redhat.com>
 
 	* genattrtab.c (write_function_unit_info): Add a dummy element

gcc/config.gcc

@@ -3179,7 +3179,7 @@ sparc64-*-solaris2* | sparcv9-*-solaris2*)
 		tmake_file="$tmake_file t-slibgcc-sld"
 	fi
 	extra_parts="crt1.o crti.o crtn.o gcrt1.o crtbegin.o crtend.o"
-	float_format=sparc
+	float_format=i128
 	if test x${enable_threads} = x ; then
 	    enable_threads=$have_pthread_h
 	    if test x${enable_threads} = x ; then
@@ -3205,14 +3205,7 @@ sparc-hal-solaris2*)
 		tmake_file="$tmake_file t-slibgcc-sld"
 	fi
         extra_parts="crt1.o crti.o crtn.o gmon.o crtbegin.o crtend.o"
-        case $machine in
-        *-*-solaris2.[0-4])
-                float_format=i128
-        ;;
-        *)
-                float_format=sparc
-                ;;
-        esac
+	float_format=i128
 	thread_file='solaris'
         ;;
 sparc-*-solaris2*)
@@ -3245,14 +3238,7 @@ sparc-*-solaris2*)
 	esac
 	xm_defines=POSIX
 	extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
-	case $machine in
-	*-*-solaris2.[0-4])
-		float_format=i128
-		;;
-	*)
-		float_format=sparc
-		;;
-	esac
+	float_format=i128
 	if test x${enable_threads} = x; then
 	    enable_threads=$have_pthread_h
 	    if test x${enable_threads} = x; then

gcc/config/float-sparc.h

@@ -66,7 +66,7 @@
 #undef DBL_MAX_10_EXP
 #define DBL_MAX_10_EXP 308
 
-#if defined(__sparcv9) || defined(__arch64__)
+#if defined(__sparcv9) || defined(__arch64__) || defined(__LONG_DOUBLE_128__)
 
    /* Number of base-FLT_RADIX digits in the significand of a long double */
 #undef LDBL_MANT_DIG