gcc: add ARM codegen fix from PR 65932

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 46774

toolchain/gcc/Config.in

@@ -23,7 +23,6 @@ choice
 	config GCC_USE_VERSION_5
 		select GCC_VERSION_5
 		bool "gcc 5.x"
-		depends on BROKEN
 
 endchoice
 

toolchain/gcc/patches/5.2.0/030-fix-arm-codegen-PR-65932.patch

@@ -0,0 +1,21 @@
+Fix from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932
+
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -628,16 +628,10 @@ extern int arm_arch_crc;
+    type, but kept valid in the wider mode.  The signedness of the
+    extension may differ from that of the type.  */
+ 
+-/* It is far faster to zero extend chars than to sign extend them */
+-
+ #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE)	\
+   if (GET_MODE_CLASS (MODE) == MODE_INT		\
+       && GET_MODE_SIZE (MODE) < 4)      	\
+     {						\
+-      if (MODE == QImode)			\
+-	UNSIGNEDP = 1;				\
+-      else if (MODE == HImode)			\
+-	UNSIGNEDP = 1;				\
+       (MODE) = SImode;				\
+     }
+