llvm-6502/lib/Target/PowerPC/PPC.td

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//===- PPC.td - Describe the PowerPC Target Machine --------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This is the top level entry point for the PowerPC target.
//
//===----------------------------------------------------------------------===//
// Get the target-independent interfaces which we are implementing.
//
include "../Target.td"
//===----------------------------------------------------------------------===//
// PowerPC Subtarget features.
//
def Feature64Bit : SubtargetFeature<"64bit","Is64Bit", "true",
"Enable 64-bit instructions">;
def Feature64BitRegs : SubtargetFeature<"64bitregs","Has64BitRegs", "true",
"Enable 64-bit registers [beta]">;
def FeatureAltivec : SubtargetFeature<"altivec","HasAltivec", "true",
"Enable Altivec instructions">;
def FeatureGPUL : SubtargetFeature<"gpul","IsGigaProcessor", "true",
"Enable GPUL instructions">;
def FeatureFSqrt : SubtargetFeature<"fsqrt","HasFSQRT", "true",
"Enable the fsqrt instruction">;
def FeatureSTFIWX : SubtargetFeature<"stfiwx","HasSTFIWX", "true",
"Enable the stfiwx instruction">;
//===----------------------------------------------------------------------===//
// Register File Description
//===----------------------------------------------------------------------===//
include "PPCRegisterInfo.td"
include "PPCSchedule.td"
include "PPCInstrInfo.td"
//===----------------------------------------------------------------------===//
// PowerPC processors supported.
//
def : Processor<"generic", G3Itineraries, []>;
def : Processor<"601", G3Itineraries, []>;
def : Processor<"602", G3Itineraries, []>;
def : Processor<"603", G3Itineraries, []>;
def : Processor<"603e", G3Itineraries, []>;
def : Processor<"603ev", G3Itineraries, []>;
def : Processor<"604", G3Itineraries, []>;
def : Processor<"604e", G3Itineraries, []>;
def : Processor<"620", G3Itineraries, []>;
def : Processor<"g3", G3Itineraries, []>;
def : Processor<"7400", G4Itineraries, [FeatureAltivec]>;
def : Processor<"g4", G4Itineraries, [FeatureAltivec]>;
def : Processor<"7450", G4PlusItineraries, [FeatureAltivec]>;
def : Processor<"g4+", G4PlusItineraries, [FeatureAltivec]>;
def : Processor<"750", G3Itineraries, []>;
def : Processor<"970", G5Itineraries,
[FeatureAltivec, FeatureGPUL, FeatureFSqrt, FeatureSTFIWX,
Feature64Bit /*, Feature64BitRegs */]>;
def : Processor<"g5", G5Itineraries,
[FeatureAltivec, FeatureGPUL, FeatureFSqrt, FeatureSTFIWX,
Feature64Bit /*, Feature64BitRegs */]>;
def PPCInstrInfo : InstrInfo {
// Define how we want to layout our TargetSpecific information field... This
// should be kept up-to-date with the fields in the PPCInstrInfo.h file.
let TSFlagsFields = ["PPC970_First",
"PPC970_Single",
"PPC970_Cracked",
"PPC970_Unit"];
let TSFlagsShifts = [0, 1, 2, 3];
let isLittleEndianEncoding = 1;
}
def PPC : Target {
// Pointers on PPC are 32-bits in size.
let PointerType = i32;
// Information about the instructions.
let InstructionSet = PPCInstrInfo;
// According to the Mach-O Runtime ABI, these regs are nonvolatile across
// calls
let CalleeSavedRegisters = [R1, R13, R14, R15, R16, R17, R18, R19,
R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, F14, F15,
F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29,
F30, F31, CR2, CR3, CR4, V20, V21, V22, V23, V24, V25, V26, V27, V28,
V29, V30, V31, LR];
}