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