X86: Implement the vectorcall calling convention
[oota-llvm.git] / lib / Target / X86 / X86CallingConv.h
1 //=== X86CallingConv.h - X86 Custom Calling Convention Routines -*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the custom routines for the X86 Calling Convention that
11 // aren't done by tablegen.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #ifndef LLVM_LIB_TARGET_X86_X86CALLINGCONV_H
16 #define LLVM_LIB_TARGET_X86_X86CALLINGCONV_H
17
18 #include "llvm/CodeGen/CallingConvLower.h"
19 #include "llvm/IR/CallingConv.h"
20
21 namespace llvm {
22
23 inline bool CC_X86_32_VectorCallIndirect(unsigned &ValNo, MVT &ValVT,
24                                          MVT &LocVT,
25                                          CCValAssign::LocInfo &LocInfo,
26                                          ISD::ArgFlagsTy &ArgFlags,
27                                          CCState &State) {
28   // Similar to CCPassIndirect, with the addition of inreg.
29   LocVT = MVT::i32;
30   LocInfo = CCValAssign::Indirect;
31   ArgFlags.setInReg();
32   return false; // Continue the search, but now for i32.
33 }
34
35
36 inline bool CC_X86_AnyReg_Error(unsigned &, MVT &, MVT &,
37                                 CCValAssign::LocInfo &, ISD::ArgFlagsTy &,
38                                 CCState &) {
39   llvm_unreachable("The AnyReg calling convention is only supported by the " \
40                    "stackmap and patchpoint intrinsics.");
41   // gracefully fallback to X86 C calling convention on Release builds.
42   return false;
43 }
44
45 } // End llvm namespace
46
47 #endif
48