compiler.h: remove _unused_attribute

[wimlib] / include / wimlib / compiler.h

diff --git a/include/wimlib/compiler.h b/include/wimlib/compiler.h
index 1d596e20a37641b5ec9874f3875febf1d1a45438..40f9276254c4e663cdb5aef7887aa4df5fc0bc63 100644 (file)
--- a/include/wimlib/compiler.h
+++ b/include/wimlib/compiler.h
@@ -49,14 +49,6 @@
 #  define __has_builtin(builtin)       0
 #endif
 
-/* Declare that the annotated function should be exported from the shared
- * library (or DLL).  */
-#ifdef __WIN32__
-#  define WIMLIBAPI __declspec(dllexport)
-#else
-#  define WIMLIBAPI __attribute__((visibility("default")))
-#endif
-
 /* Declare that the annotated function should always be inlined.  This might be
  * desirable in highly tuned code, e.g. compression codecs.  */
 #define forceinline            inline __attribute__((always_inline))
@@ -81,17 +73,6 @@
 /* Prefetch into L1 cache for write.  */
 #define prefetchw(addr)                __builtin_prefetch((addr), 1)
 
-/* Declare that the members of the annotated struct are tightly packed, and the
- * struct itself may be misaligned.  */
-#define _packed_attribute      __attribute__((packed))
-
-/* Declare that the annotated variable, or variables of the annotated type, are
- * to be aligned on n-byte boundaries.  */
-#define _aligned_attribute(n)  __attribute__((aligned(n)))
-
-/* Declare that pointers to the annotated type may alias other pointers.  */
-#define _may_alias_attribute   __attribute__((may_alias))
-
 /* Hint that the annotated function is rarely called.  */
 #if GCC_PREREQ(4, 4) || __has_attribute(cold)
 #  define _cold_attribute      __attribute__((cold))
@@ -99,24 +80,16 @@
 #  define _cold_attribute
 #endif
 
-/* Hint that the annotated function is malloc-like: any non-null pointer it
- * returns will not alias any pointer previously in use by the program.  */
-#define _malloc_attribute      __attribute__((malloc))
-
 /* Hint that the annotated function takes a printf()-like format string and
  * arguments.  This is currently disabled on Windows because MinGW does not
  * support this attribute on functions taking wide-character strings.  */
-#ifdef __WIN32__
+#ifdef _WIN32
 #  define _format_attribute(type, format_str, format_start)
 #else
 #  define _format_attribute(type, format_str, format_start)    \
                        __attribute__((format(type, format_str, format_start)))
 #endif
 
-/* 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()
  * evaluates to 1.  The other evaluates to 0.  Note that newer gcc supports
  * __BYTE_ORDER__ for easily determining the endianness; older gcc doesn't.  In
@@ -135,27 +108,25 @@
 
 /* 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)
+#if defined(__x86_64__) || defined(__i386__) || \
+       defined(__ARM_FEATURE_UNALIGNED) || defined(__powerpc64__)
 #  define UNALIGNED_ACCESS_IS_FAST 1
 #else
 #  define UNALIGNED_ACCESS_IS_FAST 0
 #endif
 
-/* Get the type of the specified expression.  */
-#define typeof     __typeof__
-
 /* Get the minimum of two variables, without multiple evaluation.  */
-#ifndef min
-#  define min(a, b)  ({ typeof(a) _a = (a); typeof(b) _b = (b); \
-                       (_a < _b) ? _a : _b; })
-#endif
+#undef min
+#define min(a, b)  ({ typeof(a) _a = (a); typeof(b) _b = (b); \
+                   (_a < _b) ? _a : _b; })
+#undef MIN
 #define MIN(a, b)      min((a), (b))
 
 /* Get the maximum of two variables, without multiple evaluation.  */
-#ifndef max
-#  define max(a, b)  ({ typeof(a) _a = (a); typeof(b) _b = (b); \
-                       (_a > _b) ? _a : _b; })
-#endif
+#undef max
+#define max(a, b)  ({ typeof(a) _a = (a); typeof(b) _b = (b); \
+                   (_a > _b) ? _a : _b; })
+#undef MAX
 #define MAX(a, b)      max((a), (b))
 
 /* Swap the values of two variables, without multiple evaluation.  */
@@ -164,27 +135,6 @@
 #endif
 #define SWAP(a, b)     swap((a), (b))
 
-/* (Optional) Efficiently swap the bytes of a 16-bit integer.  */
-#if GCC_PREREQ(4, 8) || __has_builtin(__builtin_bswap16)
-#  define compiler_bswap16 __builtin_bswap16
-#endif
-
-/* (Optional) Efficiently swap the bytes of a 32-bit integer.  */
-#if GCC_PREREQ(4, 3) || __has_builtin(__builtin_bswap32)
-#  define compiler_bswap32 __builtin_bswap32
-#endif
-
-/* (Optional) Efficiently swap the bytes of a 64-bit integer.  */
-#if GCC_PREREQ(4, 3) || __has_builtin(__builtin_bswap64)
-#  define compiler_bswap64 __builtin_bswap64
-#endif
-
-/* (Optional) Find Last Set bit and Find First Set bit macros.  */
-#define compiler_bsr32(n)      (31 - __builtin_clz(n))
-#define compiler_bsr64(n)      (63 - __builtin_clzll(n))
-#define compiler_bsf32(n)      __builtin_ctz(n)
-#define compiler_bsf64(n)      __builtin_ctzll(n)
-
 /* Optional definitions for checking with 'sparse'.  */
 #ifdef __CHECKER__
 #  define _bitwise_attr        __attribute__((bitwise))