st/glsl_to_tgsi: reduce stack explosion in recursive expression visitor

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

diff --git a/src/util/macros.h b/src/util/macros.h
index 63daba37c30e8be87ba907e0d1254829625da420..c0bfb15a47aa239b2621f7dc90c87b65bb51dd51 100644 (file)
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -24,6 +24,10 @@
 #ifndef UTIL_MACROS_H
 #define UTIL_MACROS_H
 
+#include <assert.h>
+
+#include "c99_compat.h"
+
 /* Compute the size of an array */
 #ifndef ARRAY_SIZE
 #  define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
@@ -103,6 +107,17 @@ do {                       \
 #define assume(expr) assert(expr)
 #endif
 
+/* Attribute const is used for functions that have no effects other than their
+ * return value, and only rely on the argument values to compute the return
+ * value.  As a result, calls to it can be CSEed.  Note that using memory
+ * pointed to by the arguments is not allowed for const functions.
+ */
+#ifdef HAVE_FUNC_ATTRIBUTE_CONST
+#define ATTRIBUTE_CONST __attribute__((__const__))
+#else
+#define ATTRIBUTE_CONST
+#endif
+
 #ifdef HAVE_FUNC_ATTRIBUTE_FLATTEN
 #define FLATTEN __attribute__((__flatten__))
 #else
@@ -130,6 +145,15 @@ do {                       \
 #define PACKED
 #endif
 
+/* Attribute pure is used for functions that have no effects other than their
+ * return value.  As a result, calls to it can be dead code eliminated.
+ */
+#ifdef HAVE_FUNC_ATTRIBUTE_PURE
+#define ATTRIBUTE_PURE __attribute__((__pure__))
+#else
+#define ATTRIBUTE_PURE
+#endif
+
 #ifdef __cplusplus
 /**
  * Macro function that evaluates to true if T is a trivially
@@ -164,7 +188,7 @@ do {                       \
  * inline a static function that we later use in an alias. - ajax
  */
 #ifndef PUBLIC
-#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#  if defined(__GNUC__)
 #    define PUBLIC __attribute__((visibility("default")))
 #    define USED __attribute__((used))
 #  elif defined(_MSC_VER)
@@ -176,5 +200,27 @@ do {                       \
 #  endif
 #endif
 
+#ifdef HAVE_FUNC_ATTRIBUTE_UNUSED
+#define UNUSED __attribute__((unused))
+#else
+#define UNUSED
+#endif
+
+#define MAYBE_UNUSED UNUSED
+
+#ifdef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT
+#define MUST_CHECK __attribute__((warn_unused_result))
+#else
+#define MUST_CHECK
+#endif
+
+#if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#define ATTRIBUTE_NOINLINE __attribute__((noinline))
+#else
+#define ATTRIBUTE_NOINLINE
+#endif
+
+/** Compute ceiling of integer quotient of A divided by B. */
+#define DIV_ROUND_UP( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
 
 #endif /* UTIL_MACROS_H */