Update to opus-HEAD-66611f1.

celt/cpu_support.h

Index: celt/cpu_support.h
diff --git a/celt/cpu_support.h b/celt/cpu_support.h
index d68dbe62c5b086a59e49f896e16f2eef1270cb07..1d62e2f3ac055521999456dd070c5f51f55fd6ad 100644
--- a/celt/cpu_support.h
+++ b/celt/cpu_support.h
@@ -31,7 +31,8 @@
 #include "opus_types.h"
 #include "opus_defines.h"
 
-#if defined(OPUS_HAVE_RTCD) && defined(OPUS_ARM_ASM)
+#if defined(OPUS_HAVE_RTCD) && \
+  (defined(OPUS_ARM_ASM) || defined(OPUS_ARM_NEON_INTR))
 #include "arm/armcpu.h"
 
 /* We currently support 4 ARM variants:
@@ -42,6 +43,18 @@
  */
 #define OPUS_ARCHMASK 3
 
+#elif defined(OPUS_X86_MAY_HAVE_SSE2) || defined(OPUS_X86_MAY_HAVE_SSE4_1)
+
+#include "x86/x86cpu.h"
+/* We currently support 3 x86 variants:
+ * arch[0] -> non-sse
+ * arch[1] -> sse2
+ * arch[2] -> sse4.1
+ * arch[3] -> NULL
+ */
+#define OPUS_ARCHMASK 3
+int opus_select_arch(void);
+
 #else
 #define OPUS_ARCHMASK 0
 
@@ -50,5 +63,4 @@ static OPUS_INLINE int opus_select_arch(void)
   return 0;
 }
 #endif
-
 #endif