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 TargetSubtargetInfo.
12 //===----------------------------------------------------------------------===//
14 #ifndef CELLSUBTARGET_H
15 #define CELLSUBTARGET_H
17 #include "llvm/Target/TargetSubtargetInfo.h"
18 #include "llvm/MC/MCInstrItineraries.h"
21 #define GET_SUBTARGETINFO_HEADER
22 #include "SPUGenSubtargetInfo.inc"
34 class SPUSubtarget : public SPUGenSubtargetInfo {
36 /// stackAlignment - The minimum alignment known to hold of the stack frame
37 /// on entry to the function and which must be maintained by every function.
38 unsigned StackAlignment;
40 /// Selected instruction itineraries (one entry per itinerary class.)
41 InstrItineraryData InstrItins;
43 /// Which SPU processor (this isn't really used, but it's there to keep
44 /// the C compiler happy)
45 unsigned ProcDirective;
47 /// Use (assume) large memory -- effectively disables the LQA/STQA
48 /// instructions that assume 259K local store.
52 /// This constructor initializes the data members to match that
53 /// of the specified triple.
55 SPUSubtarget(const std::string &TT, const std::string &CPU,
56 const std::string &FS);
58 /// ParseSubtargetFeatures - Parses features string setting specified
59 /// subtarget options. Definition of function is auto generated by tblgen.
60 void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
62 /// SetJITMode - This is called to inform the subtarget info that we are
63 /// producing code for the JIT.
66 /// getStackAlignment - Returns the minimum alignment known to hold of the
67 /// stack frame on entry to the function and which must be maintained by
68 /// every function for this subtarget.
69 unsigned getStackAlignment() const { return StackAlignment; }
71 /// getInstrItins - Return the instruction itineraies based on subtarget
73 const InstrItineraryData &getInstrItineraryData() const {
77 /// Use large memory addressing predicate
78 bool usingLargeMem() const {
82 /// getTargetDataString - Return the pointer size and type alignment
83 /// properties of this subtarget.
84 const char *getTargetDataString() const {
85 return "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128"
86 "-i16:16:128-i8:8:128-i1:8:128-a:0:128-v64:64:128-v128:128:128"
90 bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
91 TargetSubtargetInfo::AntiDepBreakMode& Mode,
92 RegClassVector& CriticalPathRCs) const;
94 } // End llvm namespace