docs: Add sha256 sums for the 10.3.6 release

[mesa.git] / src / util / macros.h

diff --git a/src/util/macros.h b/src/util/macros.h
index 2e2f90f587c08c1364606ded52fa47bde0f911a0..5fc6729536cd6027dbd8aa84247c2f338b7f8084 100644 (file)
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -29,6 +29,10 @@
 #  define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
 #endif
 
+/* For compatibility with Clang's __has_builtin() */
+#ifndef __has_builtin
+#  define __has_builtin(x) 0
+#endif
 
 /**
  * __builtin_expect macros
@@ -69,30 +73,65 @@ do {                        \
    assert(!str);            \
    __builtin_unreachable(); \
 } while (0)
+#elif _MSC_VER >= 1200
+#define unreachable(str)    \
+do {                        \
+   assert(!str);            \
+   __assume(0);             \
+} while (0)
 #endif
 
 #ifndef unreachable
 #define unreachable(str)
 #endif
 
+/**
+ * Assume macro. Useful for expressing our assumptions to the compiler,
+ * typically for purposes of silencing warnings.
+ */
+#if __has_builtin(__builtin_assume)
+#define assume(expr)       \
+do {                       \
+   assert(expr);           \
+   __builtin_assume(expr); \
+} while (0)
+#elif defined HAVE___BUILTIN_UNREACHABLE
+#define assume(expr) ((expr) ? ((void) 0) \
+                             : (assert(!"assumption failed"), \
+                                __builtin_unreachable()))
+#elif _MSC_VER >= 1200
+#define assume(expr) __assume(expr)
+#else
+#define assume(expr) assert(expr)
+#endif
+
+#ifdef HAVE_FUNC_ATTRIBUTE_FLATTEN
+#define FLATTEN __attribute__((__flatten__))
+#else
+#define FLATTEN
+#endif
 
-#if (__GNUC__ >= 3)
+#ifdef HAVE_FUNC_ATTRIBUTE_FORMAT
 #define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
 #else
 #define PRINTFLIKE(f, a)
 #endif
 
+#ifdef HAVE_FUNC_ATTRIBUTE_MALLOC
+#define MALLOCLIKE __attribute__((__malloc__))
+#else
+#define MALLOCLIKE
+#endif
 
 /* Used to optionally mark structures with misaligned elements or size as
  * packed, to trade off performance for space.
  */
-#if (__GNUC__ >= 3)
+#ifdef HAVE_FUNC_ATTRIBUTE_PACKED
 #define PACKED __attribute__((__packed__))
 #else
 #define PACKED
 #endif
 
-
 #ifdef __cplusplus
 /**
  * Macro function that evaluates to true if T is a trivially