src: remove __builtin_bswap16 call

Not supported by apple-gcc and I'm not convinced it's worth adding more preprocessor hacks when it should be easy as pie for the compiler to to optimize the byteswap. If it doesn't, fix the compiler. Fixes: #4284 PR-URL: #4290 Reviewed-By: Colin Ihrig <[email protected]>
nodejs · Feb 18, 2016 · 51c8bc8 · 51c8bc8
1 parent 5e1976e
commit 51c8bc8
Showing 1 changed file with 1 addition and 8 deletions.
diff --git a/src/util-inl.h b/src/util-inl.h
@@ -199,15 +199,8 @@ TypeName* Unwrap(v8::Local<v8::Object> object) {
 }
 
 void SwapBytes(uint16_t* dst, const uint16_t* src, size_t buflen) {
-  for (size_t i = 0; i < buflen; i++) {
-    // __builtin_bswap16 generates more efficient code with
-    // g++ 4.8 on PowerPC and other big-endian archs
-#ifdef __GNUC__
-    dst[i] = __builtin_bswap16(src[i]);
-#else
+  for (size_t i = 0; i < buflen; i += 1)
     dst[i] = (src[i] << 8) | (src[i] >> 8);
-#endif
-  }
 }