llvm-6502/lib/AsmParser/LLToken.h

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//===- LLToken.h - Token Codes for LLVM Assembly Files ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the enums for the .ll lexer.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_ASMPARSER_LLTOKEN_H
#define LLVM_LIB_ASMPARSER_LLTOKEN_H
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namespace llvm {
namespace lltok {
enum Kind {
// Markers
Eof, Error,
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// Tokens with no info.
dotdotdot, // ...
equal, comma, // = ,
star, // *
lsquare, rsquare, // [ ]
lbrace, rbrace, // { }
less, greater, // < >
lparen, rparen, // ( )
exclaim, // !
bar, // |
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kw_x,
kw_true, kw_false,
kw_declare, kw_define,
kw_global, kw_constant,
Remove the linker_private and linker_private_weak linkages. These linkages were introduced some time ago, but it was never very clear what exactly their semantics were or what they should be used for. Some investigation found these uses: * utf-16 strings in clang. * non-unnamed_addr strings produced by the sanitizers. It turns out they were just working around a more fundamental problem. For some sections a MachO linker needs a symbol in order to split the section into atoms, and llvm had no idea that was the case. I fixed that in r201700 and it is now safe to use the private linkage. When the object ends up in a section that requires symbols, llvm will use a 'l' prefix instead of a 'L' prefix and things just work. With that, these linkages were already dead, but there was a potential future user in the objc metadata information. I am still looking at CGObjcMac.cpp, but at this point I am convinced that linker_private and linker_private_weak are not what they need. The objc uses are currently split in * Regular symbols (no '\01' prefix). LLVM already directly provides whatever semantics they need. * Uses of a private name (start with "\01L" or "\01l") and private linkage. We can drop the "\01L" and "\01l" prefixes as soon as llvm agrees with clang on L being ok or not for a given section. I have two patches in code review for this. * Uses of private name and weak linkage. The last case is the one that one could think would fit one of these linkages. That is not the case. The semantics are * the linker will merge these symbol by *name*. * the linker will hide them in the final DSO. Given that the merging is done by name, any of the private (or internal) linkages would be a bad match. They allow llvm to rename the symbols, and that is really not what we want. From the llvm point of view, these objects should really be (linkonce|weak)(_odr)?. For now, just keeping the "\01l" prefix is probably the best for these symbols. If we one day want to have a more direct support in llvm, IMHO what we should add is not a linkage, it is just a hidden_symbol attribute. It would be applicable to multiple linkages. For example, on weak it would produce the current behavior we have for objc metadata. On internal, it would be equivalent to private (and we should then remove private). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203866 91177308-0d34-0410-b5e6-96231b3b80d8
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kw_private,
kw_internal,
kw_linkonce, kw_linkonce_odr,
kw_weak, // Used as a linkage, and a modifier for "cmpxchg".
kw_weak_odr, kw_appending,
kw_dllimport, kw_dllexport, kw_common, kw_available_externally,
kw_default, kw_hidden, kw_protected,
kw_unnamed_addr,
kw_externally_initialized,
kw_extern_weak,
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kw_external, kw_thread_local,
kw_localdynamic, kw_initialexec, kw_localexec,
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kw_zeroinitializer,
kw_undef, kw_null,
kw_to,
kw_tail,
kw_musttail,
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kw_target,
kw_triple,
kw_unwind,
kw_deplibs, // FIXME: Remove in 4.0
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kw_datalayout,
kw_volatile,
kw_atomic,
kw_unordered, kw_monotonic, kw_acquire, kw_release, kw_acq_rel, kw_seq_cst,
kw_singlethread,
kw_nnan,
kw_ninf,
kw_nsz,
kw_arcp,
kw_fast,
kw_nuw,
kw_nsw,
kw_exact,
kw_inbounds,
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kw_align,
kw_addrspace,
kw_section,
kw_alias,
kw_module,
kw_asm,
kw_sideeffect,
kw_alignstack,
kw_inteldialect,
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kw_gc,
kw_prefix,
Prologue support Patch by Ben Gamari! This redefines the `prefix` attribute introduced previously and introduces a `prologue` attribute. There are a two primary usecases that these attributes aim to serve, 1. Function prologue sigils 2. Function hot-patching: Enable the user to insert `nop` operations at the beginning of the function which can later be safely replaced with a call to some instrumentation facility 3. Runtime metadata: Allow a compiler to insert data for use by the runtime during execution. GHC is one example of a compiler that needs this functionality for its tables-next-to-code functionality. Previously `prefix` served cases (1) and (2) quite well by allowing the user to introduce arbitrary data at the entrypoint but before the function body. Case (3), however, was poorly handled by this approach as it required that prefix data was valid executable code. Here we redefine the notion of prefix data to instead be data which occurs immediately before the function entrypoint (i.e. the symbol address). Since prefix data now occurs before the function entrypoint, there is no need for the data to be valid code. The previous notion of prefix data now goes under the name "prologue data" to emphasize its duality with the function epilogue. The intention here is to handle cases (1) and (2) with prologue data and case (3) with prefix data. References ---------- This idea arose out of discussions[1] with Reid Kleckner in response to a proposal to introduce the notion of symbol offsets to enable handling of case (3). [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-May/073235.html Test Plan: testsuite Differential Revision: http://reviews.llvm.org/D6454 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223189 91177308-0d34-0410-b5e6-96231b3b80d8
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kw_prologue,
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kw_c,
kw_cc, kw_ccc, kw_fastcc, kw_coldcc,
kw_intel_ocl_bicc,
kw_x86_stdcallcc, kw_x86_fastcallcc, kw_x86_thiscallcc, kw_x86_vectorcallcc,
kw_arm_apcscc, kw_arm_aapcscc, kw_arm_aapcs_vfpcc,
kw_msp430_intrcc,
kw_ptx_kernel, kw_ptx_device,
kw_spir_kernel, kw_spir_func,
kw_x86_64_sysvcc, kw_x86_64_win64cc,
kw_webkit_jscc, kw_anyregcc,
kw_preserve_mostcc, kw_preserve_allcc,
kw_ghccc,
// Attributes:
kw_attributes,
kw_alwaysinline,
kw_sanitize_address,
kw_builtin,
kw_byval,
kw_inalloca,
kw_cold,
kw_dereferenceable,
kw_dereferenceable_or_null,
kw_inlinehint,
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kw_inreg,
kw_jumptable,
kw_minsize,
kw_naked,
kw_nest,
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kw_noalias,
kw_nobuiltin,
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kw_nocapture,
kw_noduplicate,
kw_noimplicitfloat,
kw_noinline,
kw_nonlazybind,
kw_nonnull,
kw_noredzone,
kw_noreturn,
kw_nounwind,
kw_optnone,
kw_optsize,
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kw_readnone,
kw_readonly,
kw_returned,
kw_returns_twice,
kw_signext,
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kw_ssp,
kw_sspreq,
kw_sspstrong,
kw_sret,
kw_sanitize_thread,
kw_sanitize_memory,
kw_uwtable,
kw_zeroext,
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kw_type,
kw_opaque,
kw_comdat,
// Comdat types
kw_any,
kw_exactmatch,
kw_largest,
kw_noduplicates,
kw_samesize,
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kw_eq, kw_ne, kw_slt, kw_sgt, kw_sle, kw_sge, kw_ult, kw_ugt, kw_ule,
kw_uge, kw_oeq, kw_one, kw_olt, kw_ogt, kw_ole, kw_oge, kw_ord, kw_uno,
kw_ueq, kw_une,
// atomicrmw operations that aren't also instruction keywords.
kw_xchg, kw_nand, kw_max, kw_min, kw_umax, kw_umin,
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// Instruction Opcodes (Opcode in UIntVal).
kw_add, kw_fadd, kw_sub, kw_fsub, kw_mul, kw_fmul,
kw_udiv, kw_sdiv, kw_fdiv,
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kw_urem, kw_srem, kw_frem, kw_shl, kw_lshr, kw_ashr,
kw_and, kw_or, kw_xor, kw_icmp, kw_fcmp,
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kw_phi, kw_call,
kw_trunc, kw_zext, kw_sext, kw_fptrunc, kw_fpext, kw_uitofp, kw_sitofp,
kw_fptoui, kw_fptosi, kw_inttoptr, kw_ptrtoint, kw_bitcast,
kw_addrspacecast,
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kw_select, kw_va_arg,
kw_landingpad, kw_personality, kw_cleanup, kw_catch, kw_filter,
kw_ret, kw_br, kw_switch, kw_indirectbr, kw_invoke, kw_resume,
kw_unreachable,
kw_alloca, kw_load, kw_store, kw_fence, kw_cmpxchg, kw_atomicrmw,
kw_getelementptr,
kw_extractelement, kw_insertelement, kw_shufflevector,
kw_extractvalue, kw_insertvalue, kw_blockaddress,
// Metadata types.
kw_distinct,
// Use-list order directives.
kw_uselistorder, kw_uselistorder_bb,
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// Unsigned Valued tokens (UIntVal).
GlobalID, // @42
LocalVarID, // %42
AttrGrpID, // #42
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// String valued tokens (StrVal).
LabelStr, // foo:
GlobalVar, // @foo @"foo"
ComdatVar, // $foo
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LocalVar, // %foo %"foo"
MetadataVar, // !foo
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StringConstant, // "foo"
DwarfTag, // DW_TAG_foo
DwarfAttEncoding, // DW_ATE_foo
DwarfVirtuality, // DW_VIRTUALITY_foo
DwarfLang, // DW_LANG_foo
DwarfOp, // DW_OP_foo
DIFlag, // DIFlagFoo
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// Type valued tokens (TyVal).
Type,
APFloat, // APFloatVal
APSInt // APSInt
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};
} // end namespace lltok
} // end namespace llvm
#endif