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//===-- llvm/CallingConv.h - LLVM Calling Conventions -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines LLVM's set of calling conventions.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CALLINGCONV_H
#define LLVM_CALLINGCONV_H
namespace llvm {
/// CallingConv Namespace - This namespace contains an enum with a value for
/// the well-known calling conventions.
///
namespace CallingConv {
/// A set of enums which specify the assigned numeric values for known llvm
/// calling conventions.
/// @brief LLVM Calling Convention Representation
enum ID {
/// C - The default llvm calling convention, compatible with C. This
/// convention is the only calling convention that supports varargs calls.
/// As with typical C calling conventions, the callee/caller have to
/// tolerate certain amounts of prototype mismatch.
C = 0,
// Generic LLVM calling conventions. None of these calling conventions
// support varargs calls, and all assume that the caller and callee
// prototype exactly match.
/// Fast - This calling convention attempts to make calls as fast as
/// possible (e.g. by passing things in registers).
Fast = 8,
// Cold - This calling convention attempts to make code in the caller as
// efficient as possible under the assumption that the call is not commonly
// executed. As such, these calls often preserve all registers so that the
// call does not break any live ranges in the caller side.
Cold = 9,
// GHC - Calling convention used by the Glasgow Haskell Compiler (GHC).
GHC = 10,
// Target - This is the start of the target-specific calling conventions,
// e.g. fastcall and thiscall on X86.
FirstTargetCC = 64,
/// X86_StdCall - stdcall is the calling conventions mostly used by the
/// Win32 API. It is basically the same as the C convention with the
/// difference in that the callee is responsible for popping the arguments
/// from the stack.
X86_StdCall = 64,
/// X86_FastCall - 'fast' analog of X86_StdCall. Passes first two arguments
/// in ECX:EDX registers, others - via stack. Callee is responsible for
/// stack cleaning.
X86_FastCall = 65,
/// ARM_APCS - ARM Procedure Calling Standard calling convention (obsolete,
/// but still used on some targets).
ARM_APCS = 66,
/// ARM_AAPCS - ARM Architecture Procedure Calling Standard calling
/// convention (aka EABI). Soft float variant.
ARM_AAPCS = 67,
/// ARM_AAPCS_VFP - Same as ARM_AAPCS, but uses hard floating point ABI.
ARM_AAPCS_VFP = 68,
/// MSP430_INTR - Calling convention used for MSP430 interrupt routines.
MSP430_INTR = 69
};
} // End CallingConv namespace
} // End llvm namespace
#endif
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