gcc: add llvm-gcc and llvm from trunk (does not successfully compile a target yet, but gets close)

SVN-Revision: 18019

toolchain/gcc/patches/llvm/920-soft-float.patch

@@ -0,0 +1,22 @@
+http://bugs.uclibc.org/view.php?id=1588
+
+--- a/gcc/config/rs6000/darwin-ldouble.c
++++ b/gcc/config/rs6000/darwin-ldouble.c
+@@ -70,6 +70,8 @@ Software Foundation, 51 Franklin Street,
+    but GCC currently generates poor code when a union is used to turn
+    a long double into a pair of doubles.  */
+ 
++#if defined (_SOFT_FLOAT) && defined (__LONG_DOUBLE_128__)
++
+ long double __gcc_qadd (double, double, double, double);
+ long double __gcc_qsub (double, double, double, double);
+ long double __gcc_qmul (double, double, double, double);
+@@ -219,8 +221,6 @@ __gcc_qdiv (double a, double b, double c
+   return z.ldval;
+ }
+ 
+-#if defined (_SOFT_FLOAT) && defined (__LONG_DOUBLE_128__)
+-
+ long double __gcc_qneg (double, double);
+ int __gcc_qeq (double, double, double, double);
+ int __gcc_qne (double, double, double, double);