clang/lib/Basic/Targets/MSP430.h

   1 //===--- MSP430.h - Declare MSP430 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 MSP430 TargetInfo objects.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H
  14 #define LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H
  15
  16 #include "clang/Basic/TargetInfo.h"
  17 #include "clang/Basic/TargetOptions.h"
  18 #include "llvm/Support/Compiler.h"
  19 #include "llvm/TargetParser/Triple.h"
  20
  21 namespace clang {
  22 namespace targets {
  23
  24 class LLVM_LIBRARY_VISIBILITY MSP430TargetInfo : public TargetInfo {
  25   static const char *const GCCRegNames[];
  26
  27 public:
  28   MSP430TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
  29       : TargetInfo(Triple) {
  30     TLSSupported = false;
  31     IntWidth = 16;
  32     IntAlign = 16;
  33     LongWidth = 32;
  34     LongLongWidth = 64;
  35     LongAlign = LongLongAlign = 16;
  36     FloatWidth = 32;
  37     FloatAlign = 16;
  38     DoubleWidth = LongDoubleWidth = 64;
  39     DoubleAlign = LongDoubleAlign = 16;
  40     PointerWidth = 16;
  41     PointerAlign = 16;
  42     SuitableAlign = 16;
  43     SizeType = UnsignedInt;
  44     IntMaxType = SignedLongLong;
  45     IntPtrType = SignedInt;
  46     PtrDiffType = SignedInt;
  47     SigAtomicType = SignedLong;
  48     resetDataLayout("e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16");
  49   }
  50   void getTargetDefines(const LangOptions &Opts,
  51                         MacroBuilder &Builder) const override;
  52
  53   ArrayRef<Builtin::Info> getTargetBuiltins() const override {
  54     // FIXME: Implement.
  55     return std::nullopt;
  56   }
  57
  58   bool allowsLargerPreferedTypeAlignment() const override { return false; }
  59
  60   bool hasFeature(StringRef Feature) const override {
  61     return Feature == "msp430";
  62   }
  63
  64   ArrayRef<const char *> getGCCRegNames() const override;
  65
  66   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
  67     // Make r0 - r3 be recognized by llc (f.e., in clobber list)
  68     static const TargetInfo::GCCRegAlias GCCRegAliases[] = {
  69         {{"r0"}, "pc"},
  70         {{"r1"}, "sp"},
  71         {{"r2"}, "sr"},
  72         {{"r3"}, "cg"},
  73     };
  74     return llvm::ArrayRef(GCCRegAliases);
  75   }
  76
  77   bool validateAsmConstraint(const char *&Name,
  78                              TargetInfo::ConstraintInfo &info) const override {
  79     // FIXME: implement
  80     switch (*Name) {
  81     case 'K': // the constant 1
  82     case 'L': // constant -1^20 .. 1^19
  83     case 'M': // constant 1-4:
  84       return true;
  85     }
  86     // No target constraints for now.
  87     return false;
  88   }
  89
  90   std::string_view getClobbers() const override {
  91     // FIXME: Is this really right?
  92     return "";
  93   }
  94
  95   BuiltinVaListKind getBuiltinVaListKind() const override {
  96     // FIXME: implement
  97     return TargetInfo::CharPtrBuiltinVaList;
  98   }
  99 };
 100
 101 } // namespace targets
 102 } // namespace clang
 103 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H