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71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
//===-- llvm/CallingConv.h - LLVM Calling Conventions -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines LLVM's set of calling conventions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CALLINGCONV_H
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#define LLVM_CALLINGCONV_H
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namespace llvm {
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/// CallingConv Namespace - This namespace contains an enum with a value for
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/// the well-known calling conventions.
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///
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namespace CallingConv {
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/// A set of enums which specify the assigned numeric values for known llvm
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/// calling conventions.
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/// @brief LLVM Calling Convention Representation
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enum ID {
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/// C - The default llvm calling convention, compatible with C. This
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/// convention is the only calling convention that supports varargs calls.
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/// As with typical C calling conventions, the callee/caller have to
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/// tolerate certain amounts of prototype mismatch.
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C = 0,
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// Generic LLVM calling conventions. None of these calling conventions
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// support varargs calls, and all assume that the caller and callee
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// prototype exactly match.
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/// Fast - This calling convention attempts to make calls as fast as
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/// possible /// (e.g. by passing things in registers).
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Fast = 8,
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// Cold - This calling convention attempts to make code in the caller as
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// efficient as possible under the assumption that the call is not commonly
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// executed. As such, these calls often preserve all registers so that the
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// call does not break any live ranges in the caller side.
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Cold = 9,
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// Target - This is the start of the target-specific calling conventions,
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// e.g. fastcall and thiscall on X86.
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FirstTargetCC = 64,
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/// X86_StdCall - stdcall is the calling conventions mostly used by the
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/// Win32 API. It is basically the same as the C convention with the
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/// difference in that the callee is responsible for popping the arguments
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/// from the stack.
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X86_StdCall = 64,
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/// X86_FastCall - 'fast' analog of X86_StdCall. Passes first two arguments
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/// in ECX:EDX registers, others - via stack. Callee is responsible for
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/// stack cleaning.
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X86_FastCall = 65,
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/// X86_SSEreg - The standard convention except that float and double
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/// values are returned in XMM0 if SSE support is available.
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X86_SSECall = 66
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};
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} // End CallingConv namespace
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} // End llvm namespace
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#endif
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