95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
//===-- SPUSubtarget.h - Define Subtarget for the Cell SPU ------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the Cell SPU-specific subclass of TargetSubtarget.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CELLSUBTARGET_H
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#define CELLSUBTARGET_H
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#include "llvm/Target/TargetInstrItineraries.h"
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#include "llvm/Target/TargetSubtarget.h"
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#include <string>
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namespace llvm {
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class Module;
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class GlobalValue;
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class TargetMachine;
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namespace SPU {
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enum {
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PROC_NONE,
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DEFAULT_PROC
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};
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}
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class SPUSubtarget : public TargetSubtarget {
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protected:
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const TargetMachine &TM;
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/// stackAlignment - The minimum alignment known to hold of the stack frame
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/// on entry to the function and which must be maintained by every function.
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unsigned StackAlignment;
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/// Selected instruction itineraries (one entry per itinerary class.)
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InstrItineraryData InstrItins;
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/// Which SPU processor (this isn't really used, but it's there to keep
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/// the C compiler happy)
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unsigned ProcDirective;
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/// Use (assume) large memory -- effectively disables the LQA/STQA
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/// instructions that assume 259K local store.
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bool UseLargeMem;
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public:
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/// This constructor initializes the data members to match that
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/// of the specified module.
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///
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SPUSubtarget(const TargetMachine &TM, const Module &M,
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const std::string &FS);
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/// ParseSubtargetFeatures - Parses features string setting specified
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/// subtarget options. Definition of function is auto generated by tblgen.
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void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
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/// SetJITMode - This is called to inform the subtarget info that we are
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/// producing code for the JIT.
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void SetJITMode();
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/// getStackAlignment - Returns the minimum alignment known to hold of the
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/// stack frame on entry to the function and which must be maintained by
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/// every function for this subtarget.
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unsigned getStackAlignment() const { return StackAlignment; }
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/// getInstrItins - Return the instruction itineraies based on subtarget
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/// selection.
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const InstrItineraryData &getInstrItineraryData() const {
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return InstrItins;
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}
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/// Use large memory addressing predicate
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bool usingLargeMem() const {
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return UseLargeMem;
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}
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/// getTargetDataString - Return the pointer size and type alignment
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/// properties of this subtarget.
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const char *getTargetDataString() const {
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return "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128"
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"-i16:16:128-i8:8:128-i1:8:128-a:0:128-v128:128:128"
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"-s:128:128";
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}
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};
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} // End llvm namespace
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#endif
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