[Pixman] [PATCH] Make pixman-mmx.c compile on x86-32 without optimization

[Søren Sandmann]

From: Søren Sandmann Pedersen <ssp at redhat.com>

When not optimizing, write _mm_shuffle_pi16() as a statement
expression with inline assembly. That way we avoid
__builtin_ia32_pshufw(), which is only available when compiling with
-msse, while still allowing the non-optimizing gcc to understand that
the second argument is a compile time constant.

Cc: mattst88 at gmail.com
---
 pixman/pixman-mmx.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/pixman/pixman-mmx.c b/pixman/pixman-mmx.c
index 5441d6b..74a5e87 100644
--- a/pixman/pixman-mmx.c
+++ b/pixman/pixman-mmx.c
@@ -105,8 +105,17 @@ _mm_shuffle_pi16 (__m64 __A, int8_t const __N)
     return ret;
 }
 #  else
-#   define _mm_shuffle_pi16(A, N) \
-    ((__m64) __builtin_ia32_pshufw ((__v4hi)(__m64)(A), (int)(N)))
+#   define _mm_shuffle_pi16(A, N)					\
+    ({									\
+	__m64 ret;							\
+									\
+	asm ("pshufw %2, %1, %0\n\t"					\
+	     : "=y" (ret)						\
+	     : "y" (A), "K" ((const int8_t)N)				\
+	);								\
+									\
+	ret;								\
+    })
 #  endif
 # endif
 #endif
-- 
1.7.4