arc: Use prefetch instead of prealloc.

Prealloc instruction may not be present in all HS variants. Hence, use
prefetch instead of prealloc.

newlib/
2016-04-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* libc/machine/arc/memset-archs.S: Use prefetch.

diff --git a/newlib/libc/machine/arc/memset-archs.S b/newlib/libc/machine/arc/memset-archs.S
index 188b5c490d5eaf5497864898a9ecb4f101e01e1b..dc912aa771df18bc8631e2353863bdbea783a0f2 100644 (file)
--- a/newlib/libc/machine/arc/memset-archs.S
+++ b/newlib/libc/machine/arc/memset-archs.S
@@ -37,6 +37,8 @@
 
 #ifdef __ARCHS__
 
+#define USE_PREFETCH
+
 #ifdef USE_PREFETCH
 #define PREWRITE(A,B)  prefetchw [(A),(B)]
 #else