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/Support/Compiler.h"
18 #include "llvm/TargetParser/Triple.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     3, // hlsl_groupshared
45     // Wasm address space values for this target are dummy values,
46     // as it is only enabled for Wasm targets.
47     20, // wasm_funcref
48 };
49 
50 class LLVM_LIBRARY_VISIBILITY DirectXTargetInfo : public TargetInfo {
51 public:
52   DirectXTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
53       : TargetInfo(Triple) {
54     TLSSupported = false;
55     VLASupported = false;
56     LongWidth = LongAlign = 64;
57     AddrSpaceMap = &DirectXAddrSpaceMap;
58     UseAddrSpaceMapMangling = true;
59     HasLegalHalfType = true;
60     HasFloat16 = true;
61     NoAsmVariants = true;
62     PlatformMinVersion = Triple.getOSVersion();
63     PlatformName = llvm::Triple::getOSTypeName(Triple.getOS());
64     resetDataLayout("e-m:e-p:32:32-i1:32-i8:8-i16:16-i32:32-i64:64-f16:16-f32:"
65                     "32-f64:64-n8:16:32:64");
66     TheCXXABI.set(TargetCXXABI::Microsoft);
67   }
68   bool useFP16ConversionIntrinsics() const override { return false; }
69   void getTargetDefines(const LangOptions &Opts,
70                         MacroBuilder &Builder) const override;
71 
72   bool hasFeature(StringRef Feature) const override {
73     return Feature == "directx";
74   }
75 
76   ArrayRef<Builtin::Info> getTargetBuiltins() const override {
77     return std::nullopt;
78   }
79 
80   std::string_view getClobbers() const override { return ""; }
81 
82   ArrayRef<const char *> getGCCRegNames() const override {
83     return std::nullopt;
84   }
85 
86   bool validateAsmConstraint(const char *&Name,
87                              TargetInfo::ConstraintInfo &info) const override {
88     return true;
89   }
90 
91   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
92     return std::nullopt;
93   }
94 
95   BuiltinVaListKind getBuiltinVaListKind() const override {
96     return TargetInfo::VoidPtrBuiltinVaList;
97   }
98 };
99 
100 } // namespace targets
101 } // namespace clang
102 
103 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_DIRECTX_H
104