[3/4] qemu/bswap: Replace bswapXXs() by compiler __builtin_bswap()

Commit Message

Philippe Mathieu-Daudé Sept. 23, 2020, 10:02 a.m. UTC

Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
---
 include/qemu/bswap.h | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

Comments

Richard Henderson Sept. 24, 2020, 7:29 p.m. UTC | #1

On 9/23/20 3:02 AM, Philippe Mathieu-Daudé wrote:
> Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
> ---
>  include/qemu/bswap.h | 16 +++++++++-------
>  1 file changed, 9 insertions(+), 7 deletions(-)

Reviewed-by: Richard Henderson <[e-mail]>

r~

Patch

diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h
index d1a2f700f2a..6875e48d617 100644
--- a/include/qemu/bswap.h
+++ b/include/qemu/bswap.h
@@ -35,29 +35,31 @@  static inline uint64_t bswap64(uint64_t x)
 
 static inline void bswap16s(uint16_t *s)
 {
-    *s = bswap16(*s);
+    *s = __builtin_bswap16(*s);
 }
 
 static inline void bswap32s(uint32_t *s)
 {
-    *s = bswap32(*s);
+    *s = __builtin_bswap32(*s);
 }
 
 static inline void bswap64s(uint64_t *s)
 {
-    *s = bswap64(*s);
+    *s = __builtin_bswap64(*s);
 }
 
 #if defined(HOST_WORDS_BIGENDIAN)
 #define be_bswap(v, size) (v)
-#define le_bswap(v, size) glue(bswap, size)(v)
+#define le_bswap(v, size) glue(__builtin_bswap, size)(v)
 #define be_bswaps(v, size)
-#define le_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
+#define le_bswaps(p, size) \
+            do { *p = glue(__builtin_bswap, size)(*p); } while (0)
 #else
 #define le_bswap(v, size) (v)
-#define be_bswap(v, size) glue(bswap, size)(v)
+#define be_bswap(v, size) glue(__builtin_bswap, size)(v)
 #define le_bswaps(v, size)
-#define be_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
+#define be_bswaps(p, size) \
+            do { *p = glue(__builtin_bswap, size)(*p); } while (0)
 #endif
 
 /**