clang  9.0.0svn
SPIR.h
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1 //===--- SPIR.h - Declare SPIR 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 SPIR TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
15 
16 #include "clang/Basic/TargetInfo.h"
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/Support/Compiler.h"
20 
21 namespace clang {
22 namespace targets {
23 
24 static const unsigned SPIRAddrSpaceMap[] = {
25  0, // Default
26  1, // opencl_global
27  3, // opencl_local
28  2, // opencl_constant
29  0, // opencl_private
30  4, // opencl_generic
31  0, // cuda_device
32  0, // cuda_constant
33  0 // cuda_shared
34 };
35 
36 class LLVM_LIBRARY_VISIBILITY SPIRTargetInfo : public TargetInfo {
37 public:
38  SPIRTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
39  : TargetInfo(Triple) {
40  assert(getTriple().getOS() == llvm::Triple::UnknownOS &&
41  "SPIR target must use unknown OS");
42  assert(getTriple().getEnvironment() == llvm::Triple::UnknownEnvironment &&
43  "SPIR target must use unknown environment type");
44  TLSSupported = false;
45  VLASupported = false;
46  LongWidth = LongAlign = 64;
47  AddrSpaceMap = &SPIRAddrSpaceMap;
48  UseAddrSpaceMapMangling = true;
49  HasLegalHalfType = true;
50  HasFloat16 = true;
51  // Define available target features
52  // These must be defined in sorted order!
53  NoAsmVariants = true;
54  }
55 
56  void getTargetDefines(const LangOptions &Opts,
57  MacroBuilder &Builder) const override;
58 
59  bool hasFeature(StringRef Feature) const override {
60  return Feature == "spir";
61  }
62 
63  // SPIR supports the half type and the only llvm intrinsic allowed in SPIR is
64  // memcpy as per section 3 of the SPIR spec.
65  bool useFP16ConversionIntrinsics() const override { return false; }
66 
67  ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; }
68 
69  const char *getClobbers() const override { return ""; }
70 
71  ArrayRef<const char *> getGCCRegNames() const override { return None; }
72 
73  bool validateAsmConstraint(const char *&Name,
74  TargetInfo::ConstraintInfo &info) const override {
75  return true;
76  }
77 
79  return None;
80  }
81 
84  }
85 
87  return (CC == CC_SpirFunction || CC == CC_OpenCLKernel) ? CCCR_OK
88  : CCCR_Warning;
89  }
90 
92  return CC_SpirFunction;
93  }
94 
95  void setSupportedOpenCLOpts() override {
96  // Assume all OpenCL extensions and optional core features are supported
97  // for SPIR since it is a generic target.
98  getSupportedOpenCLOpts().supportAll();
99  }
100 };
101 class LLVM_LIBRARY_VISIBILITY SPIR32TargetInfo : public SPIRTargetInfo {
102 public:
103  SPIR32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
104  : SPIRTargetInfo(Triple, Opts) {
105  PointerWidth = PointerAlign = 32;
106  SizeType = TargetInfo::UnsignedInt;
107  PtrDiffType = IntPtrType = TargetInfo::SignedInt;
108  resetDataLayout("e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-"
109  "v96:128-v192:256-v256:256-v512:512-v1024:1024");
110  }
111 
112  void getTargetDefines(const LangOptions &Opts,
113  MacroBuilder &Builder) const override;
114 };
115 
116 class LLVM_LIBRARY_VISIBILITY SPIR64TargetInfo : public SPIRTargetInfo {
117 public:
118  SPIR64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
119  : SPIRTargetInfo(Triple, Opts) {
120  PointerWidth = PointerAlign = 64;
121  SizeType = TargetInfo::UnsignedLong;
122  PtrDiffType = IntPtrType = TargetInfo::SignedLong;
123  resetDataLayout("e-i64:64-v16:16-v24:32-v32:32-v48:64-"
124  "v96:128-v192:256-v256:256-v512:512-v1024:1024");
125  }
126 
127  void getTargetDefines(const LangOptions &Opts,
128  MacroBuilder &Builder) const override;
129 };
130 } // namespace targets
131 } // namespace clang
132 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
bool useFP16ConversionIntrinsics() const override
Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used to convert to and from __fp...
Definition: SPIR.h:65
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: SPIR.h:86
SPIR32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: SPIR.h:103
Options for controlling the target.
Definition: TargetOptions.h:26
ArrayRef< Builtin::Info > getTargetBuiltins() const override
Return information about target-specific builtins for the current primary target, and info about whic...
Definition: SPIR.h:67
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:49
SPIRTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
Definition: SPIR.h:38
ArrayRef< const char * > getGCCRegNames() const override
Definition: SPIR.h:71
typedef void* __builtin_va_list;
Definition: TargetInfo.h:228
Exposes information about the current target.
Definition: TargetInfo.h:161
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:264
void setSupportedOpenCLOpts() override
Set supported OpenCL extensions and optional core features.
Definition: SPIR.h:95
Defines the clang::TargetOptions class.
static const unsigned SPIRAddrSpaceMap[]
Definition: SPIR.h:24
Dataflow Directional Tag Classes.
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: SPIR.h:82
SPIR64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: SPIR.h:118
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:223
CallingConv getDefaultCallingConv(CallingConvMethodType MT) const override
Gets the default calling convention for the given target and declaration context. ...
Definition: SPIR.h:91
bool validateAsmConstraint(const char *&Name, TargetInfo::ConstraintInfo &info) const override
Definition: SPIR.h:73
ArrayRef< TargetInfo::GCCRegAlias > getGCCRegAliases() const override
Definition: SPIR.h:78
Defines the clang::TargetInfo interface.
bool hasFeature(StringRef Feature) const override
Determine whether the given target has the given feature.
Definition: SPIR.h:59
const char * getClobbers() const override
Returns a string of target-specific clobbers, in LLVM format.
Definition: SPIR.h:69