1 //===-- SPUSubtarget.h - Define Subtarget for the Cell SPU ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the Cell SPU-specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #ifndef CELLSUBTARGET_H
15 #define CELLSUBTARGET_H
17 #include "llvm/Target/TargetInstrItineraries.h"
18 #include "llvm/Target/TargetSubtarget.h"
33 class SPUSubtarget : public TargetSubtarget {
35 const TargetMachine &TM;
37 /// stackAlignment - The minimum alignment known to hold of the stack frame
38 /// on entry to the function and which must be maintained by every function.
39 unsigned StackAlignment;
41 /// Selected instruction itineraries (one entry per itinerary class.)
42 InstrItineraryData InstrItins;
44 /// Which SPU processor (this isn't really used, but it's there to keep
45 /// the C compiler happy)
46 unsigned ProcDirective;
48 /// Use (assume) large memory -- effectively disables the LQA/STQA
49 /// instructions that assume 259K local store.
53 /// This constructor initializes the data members to match that
54 /// of the specified module.
56 SPUSubtarget(const TargetMachine &TM, const Module &M,
57 const std::string &FS);
59 /// ParseSubtargetFeatures - Parses features string setting specified
60 /// subtarget options. Definition of function is auto generated by tblgen.
61 void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
63 /// SetJITMode - This is called to inform the subtarget info that we are
64 /// producing code for the JIT.
67 /// getStackAlignment - Returns the minimum alignment known to hold of the
68 /// stack frame on entry to the function and which must be maintained by
69 /// every function for this subtarget.
70 unsigned getStackAlignment() const { return StackAlignment; }
72 /// getInstrItins - Return the instruction itineraies based on subtarget
74 const InstrItineraryData &getInstrItineraryData() const {
78 /// Use large memory addressing predicate
79 bool usingLargeMem() const {
83 /// getTargetDataString - Return the pointer size and type alignment
84 /// properties of this subtarget.
85 const char *getTargetDataString() const {
86 return "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128"
87 "-i16:16:128-i8:8:128-i1:8:128-a:0:128-v128:128:128"
91 } // End llvm namespace