lib/Target/CellSPU/SPU.h

   1 //===-- SPU.h - Top-level interface for Cell SPU Target ----------*- C++ -*-==//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the entry points for global functions defined in the LLVM
  11 // Cell SPU back-end.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_TARGET_IBMCELLSPU_H
  16 #define LLVM_TARGET_IBMCELLSPU_H
  17
  18 #include "llvm/Support/DataTypes.h"
  19 #include "llvm/Target/TargetMachine.h"
  20
  21 namespace llvm {
  22   class SPUTargetMachine;
  23   class FunctionPass;
  24   class formatted_raw_ostream;
  25
  26   FunctionPass *createSPUISelDag(SPUTargetMachine &TM);
  27
  28   /*--== Utility functions/predicates/etc used all over the place: --==*/
  29   //! Predicate test for a signed 10-bit value
  30   /*!
  31     \param Value The input value to be tested
  32
  33     This predicate tests for a signed 10-bit value, returning the 10-bit value
  34     as a short if true.
  35    */
  36   template<typename T>
  37   inline bool isS10Constant(T Value);
  38
  39   template<>
  40   inline bool isS10Constant<short>(short Value) {
  41     int SExtValue = ((int) Value << (32 - 10)) >> (32 - 10);
  42     return ((Value > 0 && Value <= (1 << 9) - 1)
  43             || (Value < 0 && (short) SExtValue == Value));
  44   }
  45
  46   template<>
  47   inline bool isS10Constant<int>(int Value) {
  48     return (Value >= -(1 << 9) && Value <= (1 << 9) - 1);
  49   }
  50
  51   template<>
  52   inline bool isS10Constant<uint32_t>(uint32_t Value) {
  53     return (Value <= ((1 << 9) - 1));
  54   }
  55
  56   template<>
  57   inline bool isS10Constant<int64_t>(int64_t Value) {
  58     return (Value >= -(1 << 9) && Value <= (1 << 9) - 1);
  59   }
  60
  61   template<>
  62   inline bool isS10Constant<uint64_t>(uint64_t Value) {
  63     return (Value <= ((1 << 9) - 1));
  64   }
  65
  66   //! Predicate test for an unsigned 10-bit value
  67   /*!
  68     \param Value The input value to be tested
  69
  70     This predicate tests for an unsigned 10-bit value, returning the 10-bit value
  71     as a short if true.
  72    */
  73   inline bool isU10Constant(short Value) {
  74     return (Value == (Value & 0x3ff));
  75   }
  76
  77   inline bool isU10Constant(int Value) {
  78     return (Value == (Value & 0x3ff));
  79   }
  80
  81   inline bool isU10Constant(uint32_t Value) {
  82     return (Value == (Value & 0x3ff));
  83   }
  84
  85   inline bool isU10Constant(int64_t Value) {
  86     return (Value == (Value & 0x3ff));
  87   }
  88
  89   inline bool isU10Constant(uint64_t Value) {
  90     return (Value == (Value & 0x3ff));
  91   }
  92
  93   extern Target TheCellSPUTarget;
  94
  95 }
  96
  97 // Defines symbolic names for the SPU instructions.
  98 //
  99 #include "SPUGenInstrNames.inc"
 100
 101 #endif /* LLVM_TARGET_IBMCELLSPU_H */