1 //===--- DirectX.h - Declare DirectX target feature support -----*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares DXIL TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_DIRECTX_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_DIRECTX_H
15 #include "clang/Basic/TargetInfo.h"
16 #include "clang/Basic/TargetOptions.h"
17 #include "llvm/ADT/Triple.h"
18 #include "llvm/Support/Compiler.h"
19 
20 namespace clang {
21 namespace targets {
22 
23 static const unsigned DirectXAddrSpaceMap[] = {
24     0, // Default
25     1, // opencl_global
26     3, // opencl_local
27     2, // opencl_constant
28     0, // opencl_private
29     4, // opencl_generic
30     5, // opencl_global_device
31     6, // opencl_global_host
32     0, // cuda_device
33     0, // cuda_constant
34     0, // cuda_shared
35     // SYCL address space values for this map are dummy
36     0, // sycl_global
37     0, // sycl_global_device
38     0, // sycl_global_host
39     0, // sycl_local
40     0, // sycl_private
41     0, // ptr32_sptr
42     0, // ptr32_uptr
43     0  // ptr64
44 };
45 
46 class LLVM_LIBRARY_VISIBILITY DirectXTargetInfo : public TargetInfo {
47 public:
48   DirectXTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
49       : TargetInfo(Triple) {
50     TLSSupported = false;
51     VLASupported = false;
52     LongWidth = LongAlign = 64;
53     AddrSpaceMap = &DirectXAddrSpaceMap;
54     UseAddrSpaceMapMangling = true;
55     HasLegalHalfType = true;
56     HasFloat16 = true;
57     NoAsmVariants = true;
58     resetDataLayout("e-m:e-p:32:32-i1:32-i8:8-i16:16-i32:32-i64:64-f16:16-f32:"
59                     "32-f64:64-n8:16:32:64");
60     TheCXXABI.set(TargetCXXABI::Microsoft);
61   }
62   bool useFP16ConversionIntrinsics() const override { return false; }
63   void getTargetDefines(const LangOptions &Opts,
64                         MacroBuilder &Builder) const override;
65 
66   bool hasFeature(StringRef Feature) const override {
67     return Feature == "directx";
68   }
69 
70   ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; }
71 
72   const char *getClobbers() const override { return ""; }
73 
74   ArrayRef<const char *> getGCCRegNames() const override { return None; }
75 
76   bool validateAsmConstraint(const char *&Name,
77                              TargetInfo::ConstraintInfo &info) const override {
78     return true;
79   }
80 
81   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
82     return None;
83   }
84 
85   BuiltinVaListKind getBuiltinVaListKind() const override {
86     return TargetInfo::VoidPtrBuiltinVaList;
87   }
88 };
89 
90 } // namespace targets
91 } // namespace clang
92 
93 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_DIRECTX_H
94