#ifndef LLVM_ATTRIBUTES_H
#define LLVM_ATTRIBUTES_H
+#include "llvm/Support/MathExtras.h"
#include <cassert>
#include <string>
/// Attributes - A bitset of attributes.
typedef unsigned Attributes;
-
+
namespace Attribute {
/// Function parameters and results can have attributes to indicate how they
const Attributes Nest = 1<<8; ///< Nested function static chain
const Attributes ReadNone = 1<<9; ///< Function does not access memory
const Attributes ReadOnly = 1<<10; ///< Function only reads from memory
-const Attributes NoInline = 1<<11; // inline=never
-const Attributes AlwaysInline = 1<<12; // inline=always
-const Attributes OptimizeForSize = 1<<13; // opt_size
-const Attributes StackProtect = 1<<14; // Stack protection.
-const Attributes StackProtectReq = 1<<15; // Stack protection required.
-const Attributes Alignment = 0xffff<<16; ///< Alignment of parameter (16 bits)
- // 0 = unknown, else in clear (not log)
-
+const Attributes NoInline = 1<<11; ///< inline=never
+const Attributes AlwaysInline = 1<<12; ///< inline=always
+const Attributes OptimizeForSize = 1<<13; ///< opt_size
+const Attributes StackProtect = 1<<14; ///< Stack protection.
+const Attributes StackProtectReq = 1<<15; ///< Stack protection required.
+const Attributes Alignment = 31<<16; ///< Alignment of parameter (5 bits)
+ // stored as log2 of alignment.
+const Attributes NoCapture = 1<<21; ///< Function creates no aliases of pointer
+
/// @brief Attributes that only apply to function parameters.
-const Attributes ParameterOnly = ByVal | Nest | StructRet;
+const Attributes ParameterOnly = ByVal | Nest | StructRet | NoCapture;
/// @brief Attributes that only apply to function.
const Attributes FunctionOnly = NoReturn | NoUnwind | ReadNone | ReadOnly |
/// @brief Attributes that are mutually incompatible.
const Attributes MutuallyIncompatible[4] = {
- ByVal | InReg | Nest | StructRet,
+ ByVal | InReg | Nest | StructRet,
ZExt | SExt,
ReadNone | ReadOnly,
NoInline | AlwaysInline
/// This turns an int alignment (a power of 2, normally) into the
/// form used internally in Attributes.
inline Attributes constructAlignmentFromInt(unsigned i) {
- return (i << 16);
+ assert(isPowerOf2_32(i) && "Alignment must be a power of two.");
+ return Log2_32(i) << 16;
}
/// The set of Attributes set in Attributes is converted to a