Matt Morehouse 236cdaf84c [SimplifyCFG] Create attribute for fuzzing-specific optimizations.
Summary:
When building with libFuzzer, converting control flow to selects or
obscuring the original operands of CMPs reduces the effectiveness of
libFuzzer's heuristics.

This patch provides an attribute to disable or modify certain optimizations
for optimal fuzzing signal.

Provides a less aggressive alternative to https://reviews.llvm.org/D44057.

Reviewers: vitalybuka, davide, arsenm, hfinkel

Reviewed By: vitalybuka

Subscribers: junbuml, mehdi_amini, wdng, javed.absar, hiraditya, llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D44232

llvm-svn: 328214
2018-03-22 17:07:51 +00:00

382 lines
6.0 KiB
C++

//===- 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
namespace llvm {
namespace lltok {
enum Kind {
// Markers
Eof,
Error,
// Tokens with no info.
dotdotdot, // ...
equal,
comma, // = ,
star, // *
lsquare,
rsquare, // [ ]
lbrace,
rbrace, // { }
less,
greater, // < >
lparen,
rparen, // ( )
exclaim, // !
bar, // |
kw_x,
kw_true,
kw_false,
kw_declare,
kw_define,
kw_global,
kw_constant,
kw_dso_local,
kw_dso_preemptable,
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_local_unnamed_addr,
kw_externally_initialized,
kw_extern_weak,
kw_external,
kw_thread_local,
kw_localdynamic,
kw_initialexec,
kw_localexec,
kw_zeroinitializer,
kw_undef,
kw_null,
kw_none,
kw_to,
kw_caller,
kw_within,
kw_from,
kw_tail,
kw_musttail,
kw_notail,
kw_target,
kw_triple,
kw_source_filename,
kw_unwind,
kw_deplibs, // FIXME: Remove in 4.0
kw_datalayout,
kw_volatile,
kw_atomic,
kw_unordered,
kw_monotonic,
kw_acquire,
kw_release,
kw_acq_rel,
kw_seq_cst,
kw_syncscope,
kw_nnan,
kw_ninf,
kw_nsz,
kw_arcp,
kw_contract,
kw_reassoc,
kw_afn,
kw_fast,
kw_nuw,
kw_nsw,
kw_exact,
kw_inbounds,
kw_inrange,
kw_align,
kw_addrspace,
kw_section,
kw_alias,
kw_ifunc,
kw_module,
kw_asm,
kw_sideeffect,
kw_alignstack,
kw_inteldialect,
kw_gc,
kw_prefix,
kw_prologue,
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_x86_regcallcc,
kw_arm_apcscc,
kw_arm_aapcscc,
kw_arm_aapcs_vfpcc,
kw_msp430_intrcc,
kw_avr_intrcc,
kw_avr_signalcc,
kw_ptx_kernel,
kw_ptx_device,
kw_spir_kernel,
kw_spir_func,
kw_x86_64_sysvcc,
kw_win64cc,
kw_webkit_jscc,
kw_anyregcc,
kw_swiftcc,
kw_preserve_mostcc,
kw_preserve_allcc,
kw_ghccc,
kw_x86_intrcc,
kw_hhvmcc,
kw_hhvm_ccc,
kw_cxx_fast_tlscc,
kw_amdgpu_vs,
kw_amdgpu_ls,
kw_amdgpu_hs,
kw_amdgpu_es,
kw_amdgpu_gs,
kw_amdgpu_ps,
kw_amdgpu_cs,
kw_amdgpu_kernel,
// Attributes:
kw_attributes,
kw_allocsize,
kw_alwaysinline,
kw_argmemonly,
kw_sanitize_address,
kw_sanitize_hwaddress,
kw_builtin,
kw_byval,
kw_inalloca,
kw_cold,
kw_convergent,
kw_dereferenceable,
kw_dereferenceable_or_null,
kw_inaccessiblememonly,
kw_inaccessiblemem_or_argmemonly,
kw_inlinehint,
kw_inreg,
kw_jumptable,
kw_minsize,
kw_naked,
kw_nest,
kw_noalias,
kw_nobuiltin,
kw_nocapture,
kw_noduplicate,
kw_noimplicitfloat,
kw_noinline,
kw_norecurse,
kw_nonlazybind,
kw_nonnull,
kw_noredzone,
kw_noreturn,
kw_nocf_check,
kw_nounwind,
kw_optforfuzzing,
kw_optnone,
kw_optsize,
kw_readnone,
kw_readonly,
kw_returned,
kw_returns_twice,
kw_signext,
kw_speculatable,
kw_ssp,
kw_sspreq,
kw_sspstrong,
kw_safestack,
kw_sret,
kw_sanitize_thread,
kw_sanitize_memory,
kw_strictfp,
kw_swifterror,
kw_swiftself,
kw_uwtable,
kw_writeonly,
kw_zeroext,
kw_type,
kw_opaque,
kw_comdat,
// Comdat types
kw_any,
kw_exactmatch,
kw_largest,
kw_noduplicates,
kw_samesize,
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,
// Instruction Opcodes (Opcode in UIntVal).
kw_add,
kw_fadd,
kw_sub,
kw_fsub,
kw_mul,
kw_fmul,
kw_udiv,
kw_sdiv,
kw_fdiv,
kw_urem,
kw_srem,
kw_frem,
kw_shl,
kw_lshr,
kw_ashr,
kw_and,
kw_or,
kw_xor,
kw_icmp,
kw_fcmp,
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,
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_cleanupret,
kw_catchswitch,
kw_catchret,
kw_catchpad,
kw_cleanuppad,
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,
// Unsigned Valued tokens (UIntVal).
GlobalID, // @42
LocalVarID, // %42
AttrGrpID, // #42
// String valued tokens (StrVal).
LabelStr, // foo:
GlobalVar, // @foo @"foo"
ComdatVar, // $foo
LocalVar, // %foo %"foo"
MetadataVar, // !foo
StringConstant, // "foo"
DwarfTag, // DW_TAG_foo
DwarfAttEncoding, // DW_ATE_foo
DwarfVirtuality, // DW_VIRTUALITY_foo
DwarfLang, // DW_LANG_foo
DwarfCC, // DW_CC_foo
EmissionKind, // lineTablesOnly
DwarfOp, // DW_OP_foo
DIFlag, // DIFlagFoo
DwarfMacinfo, // DW_MACINFO_foo
ChecksumKind, // CSK_foo
// Type valued tokens (TyVal).
Type,
APFloat, // APFloatVal
APSInt // APSInt
};
} // end namespace lltok
} // end namespace llvm
#endif