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224192bde8
This patch makes one change to GOT handling and two changes to N64's relocation model handling. Furthermore, the jumptable encodings have been corrected for static N64. Big GOT handling is now done via a new SDNode MipsGotHi - this node is unconditionally lowered to an lui instruction. The first change to N64's relocation handling is the lifting of the restriction that N64 always uses PIC. Now it is possible to target static environments. The second change adds support for 64 bit symbols and enables them by default. Previously N64 had patterns for sym32 mode only. In this mode all symbols are assumed to have 32 bit addresses. sym32 mode support is selectable with attribute 'sym32'. A follow on patch for clang will add the necessary frontend parameter. This partially resolves PR/23485. Thanks to Brooks Davis for reporting the issue! This version corrects a "Conditional jump or move depends on uninitialised value(s)" error detected by valgrind present in the original commit. Reviewers: dsanders, seanbruno, zoran.jovanovic, vkalintiris Differential Revision: https://reviews.llvm.org/D23652 llvm-svn: 293279
234 lines
12 KiB
TableGen
234 lines
12 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 PTR size such as IsPTR64bit
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list<Predicate> PTRPredicates = [];
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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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// Predicate for marking the instruction as usable in hard-float mode only.
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list<Predicate> HardFloatPredicate = [];
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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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PTRPredicates,
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FGRPredicates,
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InsnPredicates,
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HardFloatPredicate,
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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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// Avoid forward declaration issues.
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include "MipsScheduleP5600.td"
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include "MipsScheduleGeneric.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 FeaturePTR64Bit : SubtargetFeature<"ptr64", "IsPTR64bit", "true",
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"Pointers are 64-bit wide">;
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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 FeatureSoftFloat : SubtargetFeature<"soft-float", "IsSoftFloat", "true",
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"Does not support floating point instructions">;
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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 FeatureMips32r3 : SubtargetFeature<"mips32r3", "MipsArchVersion",
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"Mips32r3", "Mips32r3 ISA Support",
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[FeatureMips32r2]>;
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def FeatureMips32r5 : SubtargetFeature<"mips32r5", "MipsArchVersion",
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"Mips32r5", "Mips32r5 ISA Support",
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[FeatureMips32r3]>;
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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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[FeatureMips32r5, 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 FeatureMips64r3 : SubtargetFeature<"mips64r3", "MipsArchVersion",
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"Mips64r3", "Mips64r3 ISA Support",
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[FeatureMips64r2, FeatureMips32r3]>;
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def FeatureMips64r5 : SubtargetFeature<"mips64r5", "MipsArchVersion",
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"Mips64r5", "Mips64r5 ISA Support",
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[FeatureMips64r3, FeatureMips32r5]>;
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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, FeatureMips64r5,
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FeatureNaN2008]>;
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def FeatureSym32 : SubtargetFeature<"sym32", "HasSym32", "true",
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"Symbols are 32 bit on Mips64">;
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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 FeatureDSPR3
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: SubtargetFeature<"dspr3", "HasDSPR3", "true", "Mips DSP-R3 ASE",
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[ FeatureDSP, FeatureDSPR2 ]>;
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def FeatureMSA : SubtargetFeature<"msa", "HasMSA", "true", "Mips MSA ASE">;
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def FeatureEVA : SubtargetFeature<"eva", "HasEVA", "true", "Mips EVA 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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def FeatureUseTCCInDIV : SubtargetFeature<
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"use-tcc-in-div",
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"UseTCCInDIV", "false",
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"Force the assembler to use trapping">;
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//===----------------------------------------------------------------------===//
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// Mips processors supported.
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//===----------------------------------------------------------------------===//
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def ImplP5600 : SubtargetFeature<"p5600", "ProcImpl",
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"MipsSubtarget::CPU::P5600",
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"The P5600 Processor", [FeatureMips32r5]>;
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class Proc<string Name, list<SubtargetFeature> Features>
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: ProcessorModel<Name, MipsGenericModel, Features>;
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def : Proc<"mips1", [FeatureMips1]>;
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def : Proc<"mips2", [FeatureMips2]>;
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def : Proc<"mips32", [FeatureMips32]>;
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def : Proc<"mips32r2", [FeatureMips32r2]>;
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def : Proc<"mips32r3", [FeatureMips32r3]>;
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def : Proc<"mips32r5", [FeatureMips32r5]>;
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def : Proc<"mips32r6", [FeatureMips32r6]>;
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def : Proc<"mips3", [FeatureMips3]>;
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def : Proc<"mips4", [FeatureMips4]>;
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def : Proc<"mips5", [FeatureMips5]>;
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def : Proc<"mips64", [FeatureMips64]>;
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def : Proc<"mips64r2", [FeatureMips64r2]>;
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def : Proc<"mips64r3", [FeatureMips64r3]>;
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def : Proc<"mips64r5", [FeatureMips64r5]>;
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def : Proc<"mips64r6", [FeatureMips64r6]>;
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def : Proc<"octeon", [FeatureMips64r2, FeatureCnMips]>;
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def : ProcessorModel<"p5600", MipsP5600Model, [ImplP5600]>;
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def MipsAsmParser : AsmParser {
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let ShouldEmitMatchRegisterName = 0;
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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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