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fddb7667ca
When a target instruction wants to set target-specific flags, it should simply
set bits in the TSFlags bit vector defined in the Instruction TableGen class.
This works well because TableGen resolves member references late:
class I : Instruction {
AddrMode AM = AddrModeNone;
let TSFlags{3-0} = AM.Value;
}
let AM = AddrMode4 in
def ADD : I;
TSFlags gets the expected bits from AddrMode4 in this example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100384 91177308-0d34-0410-b5e6-96231b3b80d8
107 lines
4.9 KiB
TableGen
107 lines
4.9 KiB
TableGen
//===- PPC.td - Describe the PowerPC Target Machine --------*- tablegen -*-===//
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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 is the top level entry point for the PowerPC target.
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//
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//===----------------------------------------------------------------------===//
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// Get the target-independent interfaces which we are implementing.
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//
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include "llvm/Target/Target.td"
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//===----------------------------------------------------------------------===//
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// PowerPC Subtarget features.
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//
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//===----------------------------------------------------------------------===//
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// CPU Directives //
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//===----------------------------------------------------------------------===//
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def Directive601 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_601", "">;
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def Directive602 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_602", "">;
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def Directive603 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
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def Directive604 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
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def Directive620 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_603", "">;
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def Directive7400: SubtargetFeature<"", "DarwinDirective", "PPC::DIR_7400", "">;
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def Directive750 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_750", "">;
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def Directive970 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_970", "">;
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def Directive32 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_32", "">;
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def Directive64 : SubtargetFeature<"", "DarwinDirective", "PPC::DIR_64", "">;
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def Feature64Bit : SubtargetFeature<"64bit","Has64BitSupport", "true",
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"Enable 64-bit instructions">;
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def Feature64BitRegs : SubtargetFeature<"64bitregs","Use64BitRegs", "true",
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"Enable 64-bit registers usage for ppc32 [beta]">;
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def FeatureAltivec : SubtargetFeature<"altivec","HasAltivec", "true",
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"Enable Altivec instructions">;
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def FeatureGPUL : SubtargetFeature<"gpul","IsGigaProcessor", "true",
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"Enable GPUL instructions">;
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def FeatureFSqrt : SubtargetFeature<"fsqrt","HasFSQRT", "true",
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"Enable the fsqrt instruction">;
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def FeatureSTFIWX : SubtargetFeature<"stfiwx","HasSTFIWX", "true",
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"Enable the stfiwx instruction">;
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//===----------------------------------------------------------------------===//
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// Register File Description
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//===----------------------------------------------------------------------===//
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include "PPCRegisterInfo.td"
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include "PPCSchedule.td"
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include "PPCInstrInfo.td"
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//===----------------------------------------------------------------------===//
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// PowerPC processors supported.
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//
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def : Processor<"generic", G3Itineraries, [Directive32]>;
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def : Processor<"601", G3Itineraries, [Directive601]>;
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def : Processor<"602", G3Itineraries, [Directive602]>;
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def : Processor<"603", G3Itineraries, [Directive603]>;
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def : Processor<"603e", G3Itineraries, [Directive603]>;
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def : Processor<"603ev", G3Itineraries, [Directive603]>;
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def : Processor<"604", G3Itineraries, [Directive604]>;
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def : Processor<"604e", G3Itineraries, [Directive604]>;
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def : Processor<"620", G3Itineraries, [Directive620]>;
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def : Processor<"g3", G3Itineraries, [Directive7400]>;
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def : Processor<"7400", G4Itineraries, [Directive7400, FeatureAltivec]>;
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def : Processor<"g4", G4Itineraries, [Directive7400, FeatureAltivec]>;
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def : Processor<"7450", G4PlusItineraries, [Directive7400, FeatureAltivec]>;
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def : Processor<"g4+", G4PlusItineraries, [Directive750, FeatureAltivec]>;
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def : Processor<"750", G4Itineraries, [Directive750, FeatureAltivec]>;
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def : Processor<"970", G5Itineraries,
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[Directive970, FeatureAltivec,
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FeatureGPUL, FeatureFSqrt, FeatureSTFIWX,
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Feature64Bit /*, Feature64BitRegs */]>;
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def : Processor<"g5", G5Itineraries,
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[Directive970, FeatureAltivec,
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FeatureGPUL, FeatureFSqrt, FeatureSTFIWX,
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Feature64Bit /*, Feature64BitRegs */]>;
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def : Processor<"ppc", G3Itineraries, [Directive32]>;
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def : Processor<"ppc64", G5Itineraries,
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[Directive64, FeatureAltivec,
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FeatureGPUL, FeatureFSqrt, FeatureSTFIWX,
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Feature64Bit /*, Feature64BitRegs */]>;
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//===----------------------------------------------------------------------===//
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// Calling Conventions
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//===----------------------------------------------------------------------===//
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include "PPCCallingConv.td"
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def PPCInstrInfo : InstrInfo {
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let isLittleEndianEncoding = 1;
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}
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def PPC : Target {
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// Information about the instructions.
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let InstructionSet = PPCInstrInfo;
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}
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