1 //=====-- PPCSubtarget.h - Define Subtarget for the PPC -------*- C++ -*--====//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Nate Begeman and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the PowerPC specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #ifndef POWERPCSUBTARGET_H
15 #define POWERPCSUBTARGET_H
17 #include "llvm/Target/TargetInstrItineraries.h"
18 #include "llvm/Target/TargetSubtarget.h"
25 class PPCSubtarget
: public TargetSubtarget
{
27 /// stackAlignment - The minimum alignment known to hold of the stack frame on
28 /// entry to the function and which must be maintained by every function.
29 unsigned StackAlignment
;
31 /// Selected instruction itineraries (one entry per itinerary class.)
32 InstrItineraryData InstrItins
;
34 /// Used by the ISel to turn in optimizations for POWER4-derived architectures
44 /// This constructor initializes the data members to match that
45 /// of the specified module.
47 PPCSubtarget(const Module
&M
, const std::string
&FS
);
49 /// ParseSubtargetFeatures - Parses features string setting specified
50 /// subtarget options. Definition of function is auto generated by tblgen.
51 void ParseSubtargetFeatures(const std::string
&FS
, const std::string
&CPU
);
53 /// getStackAlignment - Returns the minimum alignment known to hold of the
54 /// stack frame on entry to the function and which must be maintained by every
55 /// function for this subtarget.
56 unsigned getStackAlignment() const { return StackAlignment
; }
58 /// getInstrItins - Return the instruction itineraies based on subtarget
60 const InstrItineraryData
getInstrItineraryData() const { return InstrItins
; }
63 bool hasFSQRT() const { return HasFSQRT
; }
64 bool hasSTFIWX() const { return HasSTFIWX
; }
65 bool has64BitRegs() const { return Has64BitRegs
; }
66 bool hasAltivec() const { return HasAltivec
; }
68 bool isAIX() const { return IsAIX
; }
69 bool isDarwin() const { return IsDarwin
; }
70 bool is64Bit() const { return Is64Bit
; }
71 bool isGigaProcessor() const { return IsGigaProcessor
; }
73 } // End llvm namespace