mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
a19fc6deb8
Also added the testcase that should have been in r215194.
This behaviour has surprised me a few times now. The problem is that the
generated MipsSubtarget::ParseSubtargetFeatures() contains code like this:
if ((Bits & Mips::FeatureABICalls) != 0) IsABICalls = true;
so '-abicalls' means 'leave it at the default' and '+abicalls' means 'set it to
true'. In this case, (and the similar -modd-spreg case) I'd like the code to be
IsABICalls = (Bits & Mips::FeatureABICalls) != 0;
or possibly:
if ((Bits & Mips::FeatureABICalls) != 0)
IsABICalls = true;
else
IsABICalls = false;
and preferably arrange for 'Bits & Mips::FeatureABICalls' to be true by default
(on some triples).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215211 91177308-0d34-0410-b5e6-96231b3b80d8
197 lines
9.9 KiB
TableGen
197 lines
9.9 KiB
TableGen
//===-- Mips.td - Describe the Mips 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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// This is the top level entry point for the Mips target.
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Target-independent interfaces
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//===----------------------------------------------------------------------===//
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include "llvm/Target/Target.td"
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// The overall idea of the PredicateControl class is to chop the Predicates list
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// into subsets that are usually overridden independently. This allows
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// subclasses to partially override the predicates of their superclasses without
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// having to re-add all the existing predicates.
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class PredicateControl {
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// Predicates for the encoding scheme in use such as HasStdEnc
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list<Predicate> EncodingPredicates = [];
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// Predicates for the GPR size such as IsGP64bit
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list<Predicate> GPRPredicates = [];
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// Predicates for the FGR size and layout such as IsFP64bit
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list<Predicate> FGRPredicates = [];
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// Predicates for the instruction group membership such as ISA's and ASE's
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list<Predicate> InsnPredicates = [];
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// Predicates for anything else
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list<Predicate> AdditionalPredicates = [];
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list<Predicate> Predicates = !listconcat(EncodingPredicates,
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GPRPredicates,
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FGRPredicates,
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InsnPredicates,
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AdditionalPredicates);
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}
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// Like Requires<> but for the AdditionalPredicates list
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class AdditionalRequires<list<Predicate> preds> {
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list<Predicate> AdditionalPredicates = preds;
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}
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//===----------------------------------------------------------------------===//
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// Register File, Calling Conv, Instruction Descriptions
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//===----------------------------------------------------------------------===//
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include "MipsRegisterInfo.td"
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include "MipsSchedule.td"
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include "MipsInstrInfo.td"
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include "MipsCallingConv.td"
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def MipsInstrInfo : InstrInfo;
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//===----------------------------------------------------------------------===//
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// Mips Subtarget features //
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//===----------------------------------------------------------------------===//
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def FeatureNoABICalls : SubtargetFeature<"noabicalls", "NoABICalls", "true",
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"Disable SVR4-style position-independent code.">;
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def FeatureGP64Bit : SubtargetFeature<"gp64", "IsGP64bit", "true",
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"General Purpose Registers are 64-bit wide.">;
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def FeatureFP64Bit : SubtargetFeature<"fp64", "IsFP64bit", "true",
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"Support 64-bit FP registers.">;
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def FeatureFPXX : SubtargetFeature<"fpxx", "IsFPXX", "true",
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"Support for FPXX.">;
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def FeatureNaN2008 : SubtargetFeature<"nan2008", "IsNaN2008bit", "true",
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"IEEE 754-2008 NaN encoding.">;
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def FeatureSingleFloat : SubtargetFeature<"single-float", "IsSingleFloat",
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"true", "Only supports single precision float">;
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def FeatureO32 : SubtargetFeature<"o32", "MipsABI", "O32",
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"Enable o32 ABI">;
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def FeatureN32 : SubtargetFeature<"n32", "MipsABI", "N32",
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"Enable n32 ABI">;
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def FeatureN64 : SubtargetFeature<"n64", "MipsABI", "N64",
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"Enable n64 ABI">;
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def FeatureEABI : SubtargetFeature<"eabi", "MipsABI", "EABI",
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"Enable eabi ABI">;
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def FeatureNoOddSPReg : SubtargetFeature<"nooddspreg", "UseOddSPReg", "false",
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"Disable odd numbered single-precision "
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"registers">;
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def FeatureVFPU : SubtargetFeature<"vfpu", "HasVFPU",
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"true", "Enable vector FPU instructions.">;
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def FeatureMips1 : SubtargetFeature<"mips1", "MipsArchVersion", "Mips1",
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"Mips I ISA Support [highly experimental]">;
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def FeatureMips2 : SubtargetFeature<"mips2", "MipsArchVersion", "Mips2",
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"Mips II ISA Support [highly experimental]",
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[FeatureMips1]>;
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def FeatureMips3_32 : SubtargetFeature<"mips3_32", "HasMips3_32", "true",
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"Subset of MIPS-III that is also in MIPS32 "
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"[highly experimental]">;
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def FeatureMips3_32r2 : SubtargetFeature<"mips3_32r2", "HasMips3_32r2", "true",
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"Subset of MIPS-III that is also in MIPS32r2 "
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"[highly experimental]">;
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def FeatureMips3 : SubtargetFeature<"mips3", "MipsArchVersion", "Mips3",
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"MIPS III ISA Support [highly experimental]",
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[FeatureMips2, FeatureMips3_32,
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FeatureMips3_32r2, FeatureGP64Bit,
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FeatureFP64Bit]>;
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def FeatureMips4_32 : SubtargetFeature<"mips4_32", "HasMips4_32", "true",
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"Subset of MIPS-IV that is also in MIPS32 "
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"[highly experimental]">;
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def FeatureMips4_32r2 : SubtargetFeature<"mips4_32r2", "HasMips4_32r2", "true",
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"Subset of MIPS-IV that is also in MIPS32r2 "
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"[highly experimental]">;
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def FeatureMips4 : SubtargetFeature<"mips4", "MipsArchVersion",
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"Mips4", "MIPS IV ISA Support",
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[FeatureMips3, FeatureMips4_32,
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FeatureMips4_32r2]>;
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def FeatureMips5_32r2 : SubtargetFeature<"mips5_32r2", "HasMips5_32r2", "true",
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"Subset of MIPS-V that is also in MIPS32r2 "
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"[highly experimental]">;
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def FeatureMips5 : SubtargetFeature<"mips5", "MipsArchVersion", "Mips5",
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"MIPS V ISA Support [highly experimental]",
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[FeatureMips4, FeatureMips5_32r2]>;
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def FeatureMips32 : SubtargetFeature<"mips32", "MipsArchVersion", "Mips32",
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"Mips32 ISA Support",
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[FeatureMips2, FeatureMips3_32,
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FeatureMips4_32]>;
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def FeatureMips32r2 : SubtargetFeature<"mips32r2", "MipsArchVersion",
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"Mips32r2", "Mips32r2 ISA Support",
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[FeatureMips3_32r2, FeatureMips4_32r2,
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FeatureMips5_32r2, FeatureMips32]>;
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def FeatureMips32r6 : SubtargetFeature<"mips32r6", "MipsArchVersion",
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"Mips32r6",
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"Mips32r6 ISA Support [experimental]",
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[FeatureMips32r2, FeatureFP64Bit,
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FeatureNaN2008]>;
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def FeatureMips64 : SubtargetFeature<"mips64", "MipsArchVersion",
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"Mips64", "Mips64 ISA Support",
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[FeatureMips5, FeatureMips32]>;
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def FeatureMips64r2 : SubtargetFeature<"mips64r2", "MipsArchVersion",
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"Mips64r2", "Mips64r2 ISA Support",
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[FeatureMips64, FeatureMips32r2]>;
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def FeatureMips64r6 : SubtargetFeature<"mips64r6", "MipsArchVersion",
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"Mips64r6",
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"Mips64r6 ISA Support [experimental]",
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[FeatureMips32r6, FeatureMips64r2,
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FeatureNaN2008]>;
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def FeatureMips16 : SubtargetFeature<"mips16", "InMips16Mode", "true",
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"Mips16 mode">;
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def FeatureDSP : SubtargetFeature<"dsp", "HasDSP", "true", "Mips DSP ASE">;
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def FeatureDSPR2 : SubtargetFeature<"dspr2", "HasDSPR2", "true",
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"Mips DSP-R2 ASE", [FeatureDSP]>;
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def FeatureMSA : SubtargetFeature<"msa", "HasMSA", "true", "Mips MSA ASE">;
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def FeatureMicroMips : SubtargetFeature<"micromips", "InMicroMipsMode", "true",
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"microMips mode">;
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def FeatureCnMips : SubtargetFeature<"cnmips", "HasCnMips",
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"true", "Octeon cnMIPS Support",
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[FeatureMips64r2]>;
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//===----------------------------------------------------------------------===//
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// Mips processors supported.
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//===----------------------------------------------------------------------===//
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class Proc<string Name, list<SubtargetFeature> Features>
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: Processor<Name, MipsGenericItineraries, Features>;
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def : Proc<"mips1", [FeatureMips1, FeatureO32]>;
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def : Proc<"mips2", [FeatureMips2, FeatureO32]>;
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def : Proc<"mips32", [FeatureMips32, FeatureO32]>;
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def : Proc<"mips32r2", [FeatureMips32r2, FeatureO32]>;
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def : Proc<"mips32r6", [FeatureMips32r6, FeatureO32]>;
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def : Proc<"mips3", [FeatureMips3, FeatureN64]>;
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def : Proc<"mips4", [FeatureMips4, FeatureN64]>;
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def : Proc<"mips5", [FeatureMips5, FeatureN64]>;
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def : Proc<"mips64", [FeatureMips64, FeatureN64]>;
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def : Proc<"mips64r2", [FeatureMips64r2, FeatureN64]>;
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def : Proc<"mips64r6", [FeatureMips64r6, FeatureN64]>;
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def : Proc<"mips16", [FeatureMips16, FeatureO32]>;
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def : Proc<"octeon", [FeatureMips64r2, FeatureN64, FeatureCnMips]>;
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def MipsAsmParser : AsmParser {
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let ShouldEmitMatchRegisterName = 0;
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let MnemonicContainsDot = 1;
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}
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def MipsAsmParserVariant : AsmParserVariant {
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int Variant = 0;
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// Recognize hard coded registers.
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string RegisterPrefix = "$";
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}
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def Mips : Target {
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let InstructionSet = MipsInstrInfo;
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let AssemblyParsers = [MipsAsmParser];
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let AssemblyParserVariants = [MipsAsmParserVariant];
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}
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