commit 91a61f77e203bf519c28f9331b9c8db731869499
author Elliott Hughes <enh@google.com> Wed Dec 03 16:20:05 2014 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Wed Dec 03 16:20:06 2014 +0000
tree ff9702348f68fd385d7f6fdf79359a9fa1c58c35
parent 244299f4e0b58e48b5fdb15fc10a7327e0c32cf9
parent 12f35ada435c0cfab4f62a867186a0b9d61f10e3

Merge "Switch x86 and x86-64 to __builtin_bswap*."

libc/arch-arm64/include/machine/endian.h

diff --git a/libc/arch-arm64/include/machine/endian.h b/libc/arch-arm64/include/machine/endian.h
index 4743733..b9544af 100644
--- a/libc/arch-arm64/include/machine/endian.h
+++ b/libc/arch-arm64/include/machine/endian.h
@@ -31,13 +31,8 @@
 
 #ifdef __GNUC__
 
-#define __swap16md(x) ({                                        \
-    register u_int16_t _x = (x);                                \
-    __asm volatile ("rev16 %0, %0" : "+r" (_x));                \
-    _x;                                                         \
-})
-
 /* Use GCC builtins */
+#define __swap16md(x) __builtin_bswap16(x)
 #define __swap32md(x) __builtin_bswap32(x)
 #define __swap64md(x) __builtin_bswap64(x)