DECLARE_ALIGNED macro for TMS470 compiler

This compiler supports gcc-style alignment attributes for struct,
but not for global variables.  For the latter, alignment can be
specified with a pragma, which does not work for struct members or
local variables.  By using both pragma and attribute, one or the
other will always take effect.

Unfortunately, no means exists for aligning stack variables.

Originally committed as revision 21379 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavutil/mem.h b/libavutil/mem.h
index ec5d4f9..75beffb 100644 (file)
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -31,6 +31,13 @@
 #if defined(__ICC) || defined(__SUNPRO_C)
     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
     #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
+#elif defined(__TI_COMPILER_VERSION__)
+    #define DECLARE_ALIGNED(n,t,v)                      \
+        AV_PRAGMA(DATA_ALIGN(v,n))                      \
+        t __attribute__((aligned(n))) v
+    #define DECLARE_ASM_CONST(n,t,v)                    \
+        AV_PRAGMA(DATA_ALIGN(v,n))                      \
+        static const t __attribute__((aligned(n))) v
 #elif defined(__GNUC__)
     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
     #define DECLARE_ASM_CONST(n,t,v)    static const t attribute_used __attribute__ ((aligned (n))) v