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[multiple changes]
authorJakub Jelinek <jakub@gcc.gnu.org>
Thu, 23 Feb 2006 08:58:22 +0000 (09:58 +0100)
committerJakub Jelinek <jakub@gcc.gnu.org>
Thu, 23 Feb 2006 08:58:22 +0000 (09:58 +0100)
2006-02-23  Jakub Jelinek  <jakub@redhat.com>

* configure.ac: Add --with{,out}-long-double-128 configure option.
(TARGET_DEFAULT_LONG_DOUBLE_128): New test.
* configure: Rebuilt.
* config.in: Rebuilt.
* doc/install.texi (Options specification): Document
--with-long-double-128.

* config/rs6000/linux.h [TARGET_DEFAULT_LONG_DOUBLE_128]
(RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
* config/rs6000/linux64.h [TARGET_DEFAULT_LONG_DOUBLE_128]
(RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.

2006-02-23  Aldy Hernandez  <aldyh@redhat.com>

* config/s390/s390.c (override_options): Handle
TARGET_DEFAULT_LONG_DOUBLE_128.

* config/alpha/alpha.c (override_options): Handle
TARGET_DEFAULT_LONG_DOUBLE_128.

* config/sparc/sparc.c (sparc_override_options): Handle
TARGET_DEFAULT_LONG_DOUBLE_128.

From-SVN: r111381

gcc/ChangeLog patch | blob | blame | history
gcc/config.in patch | blob | blame | history
gcc/config/alpha/alpha.c patch | blob | blame | history
gcc/config/rs6000/linux.h patch | blob | blame | history
gcc/config/rs6000/linux64.h patch | blob | blame | history
gcc/config/s390/s390.c patch | blob | blame | history
gcc/config/sparc/sparc.c patch | blob | blame | history
gcc/configure patch | blob | blame | history
gcc/configure.ac patch | blob | blame | history
gcc/doc/install.texi patch | blob | blame | history

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8470fa8ecd73994ccfe98052b1af528d756b2a61..2b327b91115b2ccfb4f3de3f15a70442612a780d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,28 @@
+2006-02-23  Jakub Jelinek  <jakub@redhat.com>
+
+       * configure.ac: Add --with{,out}-long-double-128 configure option.
+       (TARGET_DEFAULT_LONG_DOUBLE_128): New test.
+       * configure: Rebuilt.
+       * config.in: Rebuilt.
+       * doc/install.texi (Options specification): Document
+       --with-long-double-128.
+
+       * config/rs6000/linux.h [TARGET_DEFAULT_LONG_DOUBLE_128]
+       (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
+       * config/rs6000/linux64.h [TARGET_DEFAULT_LONG_DOUBLE_128]
+       (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
+
+2006-02-23  Aldy Hernandez  <aldyh@redhat.com>
+
+       * config/s390/s390.c (override_options): Handle
+       TARGET_DEFAULT_LONG_DOUBLE_128.
+
+       * config/alpha/alpha.c (override_options): Handle
+       TARGET_DEFAULT_LONG_DOUBLE_128.
+
+       * config/sparc/sparc.c (sparc_override_options): Handle
+       TARGET_DEFAULT_LONG_DOUBLE_128.
+
 2006-02-22  Daniel Jacobowitz  <dan@codesourcery.com>
 
        * Makefile.in (stmp-fixinc): Use real-$(INSTALL_HEADERS_DIR).
diff --git a/gcc/config.in b/gcc/config.in
index bb262d8c2606238e33bfce0e61a09399090f7972..98e34388dff952ff6df81223bab73de559e451c2 100644 (file)
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1283,6 +1283,12 @@
 #endif
 
 
+/* Define if TFmode long double should be the default */
+#ifndef USED_FOR_TARGET
+#undef TARGET_DEFAULT_LONG_DOUBLE_128
+#endif
+
+
 /* Define if your target C library provides stack protector support */
 #ifndef USED_FOR_TARGET
 #undef TARGET_LIBC_PROVIDES_SSP
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 909035a269400562850a20b08d51ea55ea1524fc..14d54388e6085badfbfbf46f725bb4e16d9de2bc 100644 (file)
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -516,6 +516,11 @@ override_options (void)
       REAL_MODE_FORMAT (DFmode) = &vax_g_format;
       REAL_MODE_FORMAT (TFmode) = NULL;
     }
+
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+  if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
+    target_flags |= MASK_LONG_DOUBLE_128;
+#endif
 }
 \f
 /* Returns 1 if VALUE is a mask that contains full bytes of zero or ones.  */
diff --git a/gcc/config/rs6000/linux.h b/gcc/config/rs6000/linux.h
index 1816d0fc7f11c719bfdaf4c70548fefc59e3603f..3df356fca1aaf3908524046dba09568321f170c0 100644 (file)
--- a/gcc/config/rs6000/linux.h
+++ b/gcc/config/rs6000/linux.h
@@ -120,3 +120,8 @@
 #endif
 
 #define POWERPC_LINUX
+
+/* ppc linux has 128-bit long double support in glibc 2.4 and later.  */
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
+#endif
diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
index d292380b4ba5368b46c8d595d9be0a9c4abf841f..26f74967929695c06697c9579f3988e906b24c5e 100644 (file)
--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
@@ -584,3 +584,8 @@ while (0)
 #endif
 
 #define POWERPC_LINUX
+
+/* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later.  */
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
+#endif
diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index 3eeb4acb0b6dbb21dc6e061b9b05181e2988e5be..2ebe8ac009fa881423860165dbf44eea98059060 100644 (file)
--- a/gcc/config/s390/s390.c
+++ b/gcc/config/s390/s390.c
@@ -1415,6 +1415,11 @@ override_options (void)
     }
   else if (s390_stack_guard)
     error ("-mstack-guard implies use of -mstack-size"); 
+
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+  if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
+    target_flags |= MASK_LONG_DOUBLE_128;
+#endif
 }
 
 /* Map for smallest class containing reg regno.  */
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index b5781ac65d7afb2ab2c40cadea8e1cac4587b6a1..f44c6d0ad19333c39f94eb85c7b893dc56a1ea70 100644 (file)
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -791,6 +791,11 @@ sparc_override_options (void)
       sparc_costs = &ultrasparc3_costs;
       break;
     };
+
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+  if (!(target_flags_explicit & MASK_LONG_DOUBLE_128))
+    target_flags |= MASK_LONG_DOUBLE_128;
+#endif
 }
 \f
 #ifdef SUBTARGET_ATTRIBUTE_TABLE
diff --git a/gcc/configure b/gcc/configure
index 5a225da402bd694e569ba1b55235ecf9be2a1bf4..b07c28610cf394c01793868b4ca6169f65f2787a 100755 (executable)
--- a/gcc/configure
+++ b/gcc/configure
@@ -932,6 +932,7 @@ Optional Packages:
   --with-libiconv-prefix[=DIR]  search for libiconv in DIR/include and DIR/lib
   --without-libiconv-prefix     don't search for libiconv in includedir and libdir
   --with-system-libunwind use installed libunwind
+  --with-long-double-128  Use 128-bit long double by default.
   --with-gc={page,zone}   choose the garbage collection mechanism to use
                           with the compiler
   --with-system-zlib      use installed libz
@@ -7612,7 +7613,7 @@ if test "${gcc_cv_prog_makeinfo_modern+set}" = set; then
 else
     ac_prog_version=`$MAKEINFO --version 2>&1 |
                    sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'`
-  echo "configure:7615: version of makeinfo is $ac_prog_version" >&5
+  echo "configure:7616: version of makeinfo is $ac_prog_version" >&5
   case $ac_prog_version in
     '')     gcc_cv_prog_makeinfo_modern=no;;
     4.[4-9]*)
@@ -15675,6 +15676,46 @@ _ACEOF
 
 fi
 
+# Check if TFmode long double should be used by default or not.
+# Some glibc targets used DFmode long double, but with glibc 2.4
+# and later they can use TFmode.
+case "$target" in
+  powerpc*-*-*gnu* | \
+  sparc*-*-linux* | \
+  s390*-*-linux* | \
+  alpha*-*-linux*)
+
+# Check whether --with-long-double-128 or --without-long-double-128 was given.
+if test "${with_long_double_128+set}" = set; then
+  withval="$with_long_double_128"
+  gcc_cv_target_ldbl128="$with_long_double_128"
+else
+  gcc_cv_target_ldbl128=no
+      if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
+       if test "x$with_sysroot" = x; then
+         glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
+       elif test "x$with_sysroot" = xyes; then
+         glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
+       else
+         glibc_header_dir="${with_sysroot}/usr/include"
+       fi
+      else
+       glibc_header_dir=/usr/include
+      fi
+      grep '^  *#[     ]*define[       ][      ]*__LONG_DOUBLE_MATH_OPTIONAL' \
+        $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
+      && gcc_cv_target_ldbl128=yes
+fi;
+    ;;
+esac
+if test x$gcc_cv_target_ldbl128 = xyes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define TARGET_DEFAULT_LONG_DOUBLE_128 1
+_ACEOF
+
+fi
+
 # Find out what GC implementation we want, or may, use.
 
 # Check whether --with-gc or --without-gc was given.
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 7b9a94fea6b00d2aebe3791eb8ae652ae1124b05..1b8feabd60de317b99a736233c42b01f34eef364 100644 (file)
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -3176,6 +3176,39 @@ if test x$gcc_cv_libc_provides_ssp = xyes; then
            [Define if your target C library provides stack protector support])
 fi
 
+# Check if TFmode long double should be used by default or not.
+# Some glibc targets used DFmode long double, but with glibc 2.4
+# and later they can use TFmode.
+case "$target" in
+  powerpc*-*-*gnu* | \
+  sparc*-*-linux* | \
+  s390*-*-linux* | \
+  alpha*-*-linux*)
+    AC_ARG_WITH(long-double-128,
+[  --with-long-double-128  Use 128-bit long double by default.],
+      gcc_cv_target_ldbl128="$with_long_double_128",
+      [gcc_cv_target_ldbl128=no
+      if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
+       if test "x$with_sysroot" = x; then
+         glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
+       elif test "x$with_sysroot" = xyes; then
+         glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
+       else
+         glibc_header_dir="${with_sysroot}/usr/include"
+       fi
+      else
+       glibc_header_dir=/usr/include
+      fi
+      grep '^[         ]*#[    ]*define[       ][      ]*__LONG_DOUBLE_MATH_OPTIONAL' \
+        $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
+      && gcc_cv_target_ldbl128=yes])
+    ;;
+esac
+if test x$gcc_cv_target_ldbl128 = xyes; then
+  AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
+           [Define if TFmode long double should be the default])
+fi
+
 # Find out what GC implementation we want, or may, use.
 AC_ARG_WITH(gc,
 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 9ac21eecd87797e5d9c20aeba69f2aae192abbb4..11da1c809762fc32e3038ddf7418769a9788d85c 100644 (file)
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -1259,6 +1259,14 @@ extension.  This is enabled by default only on PowerPC GNU/Linux
 systems.  Other systems may also support it, but require the user to
 specifically enable it.
 
+@item --with-long-double-128
+Specify if @code{long double} type should be 128-bit by default on selected
+GNU/Linux architectures.  If using @code{--without-long-double-128},
+@code{long double} will be by default 64-bit, the same as @code{double} type.
+When neither of these configure options are used, the default will be
+128-bit @code{long double} when built against GNU C Library 2.4 and later,
+64-bit @code{long double} otherwise.
+
 @end table
 
 @subheading Cross-Compiler-Specific Options
GNU Compiler Collection
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