compiler.h: remove concept of different unaligned access speeds

[wimlib] / include / wimlib / compiler.h

diff --git a/include/wimlib/compiler.h b/include/wimlib/compiler.h
index 533930396e0134e657c80486bf8954f8f87baeb9..c469010bdfa86e178274a7a1d5b64ced21e7d068 100644 (file)
--- a/include/wimlib/compiler.h
+++ b/include/wimlib/compiler.h
@@ -87,6 +87,10 @@
 /* TODO: _format_attribute is currently ignored.  */
 #define _format_attribute(type, format_str, format_start)
 
+/* Hint that the annotated function is intentionally not used.  This might be
+ * the case if the function contains only static assertions.  */
+#define _unused_attribute      __attribute__((unused))
+
 /* Endianness definitions.  Either CPU_IS_BIG_ENDIAN or CPU_IS_LITTLE_ENDIAN is
  * set to 1.  The other is set to 0.  Note that newer gcc supports
  * __BYTE_ORDER__ for easily determining the endianness; older gcc doesn't.  In
@@ -103,12 +107,12 @@
 #endif
 #define CPU_IS_LITTLE_ENDIAN (!CPU_IS_BIG_ENDIAN)
 
-#if defined(__x86_64__) || defined(__i386__)
-#  define UNALIGNED_ACCESS_SPEED 3
-#elif defined(__ARM_FEATURE_UNALIGNED) && (__ARM_FEATURE_UNALIGNED == 1)
-#  define UNALIGNED_ACCESS_SPEED 2
+/* UNALIGNED_ACCESS_IS_FAST should be defined to 1 if unaligned memory accesses
+ * can be performed efficiently on the target platform.  */
+#if defined(__x86_64__) || defined(__i386__) || defined(__ARM_FEATURE_UNALIGNED)
+#  define UNALIGNED_ACCESS_IS_FAST 1
 #else
-#  define UNALIGNED_ACCESS_SPEED 0
+#  define UNALIGNED_ACCESS_IS_FAST 0
 #endif
 
 /* Get the type of the specified expression.  */