17ce89fa80
Currently adding attribute no_sanitize("bounds") isn't disabling
-fsanitize=local-bounds (also enabled in -fsanitize=bounds). The Clang
frontend handles fsanitize=array-bounds which can already be disabled by
no_sanitize("bounds"). However, instrumentation added by the
BoundsChecking pass in the middle-end cannot be disabled by the
attribute.
The fix is very similar to D102772 that added the ability to selectively
disable sanitizer pass on certain functions.
In this patch, if no_sanitize("bounds") is provided, an additional
function attribute (NoSanitizeBounds) is attached to IR to let the
BoundsChecking pass know we want to disable local-bounds checking. In
order to support this feature, the IR is extended (similar to D102772)
to make Clang able to preserve the information and let BoundsChecking
pass know bounds checking is disabled for certain function.
Reviewed By: melver
Differential Revision: https://reviews.llvm.org/D119816
113 lines
5.6 KiB
EmacsLisp
113 lines
5.6 KiB
EmacsLisp
;;; llvm-mode.el --- Major mode for the LLVM assembler language.
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;; Maintainer: The LLVM team, http://llvm.org/
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;; Version: 1.0
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;;; Commentary:
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;; Major mode for editing LLVM IR files.
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;;; Code:
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(defvar llvm-mode-syntax-table
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?% "_" table)
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(modify-syntax-entry ?. "_" table)
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(modify-syntax-entry ?\; "< " table)
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(modify-syntax-entry ?\n "> " table)
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table)
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"Syntax table used while in LLVM mode.")
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(defvar llvm-font-lock-keywords
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(list
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;; Attributes
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`(,(regexp-opt
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'("alwaysinline" "argmemonly" "allocsize" "builtin" "cold" "convergent" "dereferenceable" "dereferenceable_or_null" "hot" "inaccessiblememonly"
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"inaccessiblemem_or_argmemonly" "inalloca" "inlinehint" "jumptable" "minsize" "mustprogress" "naked" "nobuiltin" "nonnull"
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"nocallback" "nocf_check" "noduplicate" "nofree" "noimplicitfloat" "noinline" "nomerge" "nonlazybind" "noprofile" "noredzone" "noreturn"
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"norecurse" "nosync" "noundef" "nounwind" "nosanitize_bounds" "nosanitize_coverage" "null_pointer_is_valid" "optforfuzzing" "optnone" "optsize" "preallocated" "readnone" "readonly" "returned" "returns_twice"
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"shadowcallstack" "speculatable" "speculative_load_hardening" "ssp" "sspreq" "sspstrong" "safestack" "sanitize_address" "sanitize_hwaddress" "sanitize_memtag"
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"sanitize_thread" "sanitize_memory" "strictfp" "swifterror" "uwtable" "vscale_range" "willreturn" "writeonly" "immarg") 'symbols) . font-lock-constant-face)
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;; Variables
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'("%[-a-zA-Z$._][-a-zA-Z$._0-9]*" . font-lock-variable-name-face)
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;; Labels
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'("[-a-zA-Z$._0-9]+:" . font-lock-variable-name-face)
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;; Unnamed variable slots
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'("%[-]?[0-9]+" . font-lock-variable-name-face)
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;; Types
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`(,(regexp-opt
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'("void" "i1" "i8" "i16" "i32" "i64" "i128" "half" "bfloat" "float" "double" "fp128" "x86_fp80" "ppc_fp128" "x86_mmx" "x86_amx"
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"type" "label" "opaque" "token") 'symbols) . font-lock-type-face)
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;; Integer literals
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'("\\b[-]?[0-9]+\\b" . font-lock-preprocessor-face)
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;; Floating point constants
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'("\\b[-+]?[0-9]+.[0-9]*\\([eE][-+]?[0-9]+\\)?\\b" . font-lock-preprocessor-face)
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;; Hex constants
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'("\\b0x[0-9A-Fa-f]+\\b" . font-lock-preprocessor-face)
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;; Keywords
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`(,(regexp-opt
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'(;; Toplevel entities
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"declare" "define" "module" "target" "source_filename" "global" "constant" "const" "alias" "ifunc" "comdat"
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"attributes" "uselistorder" "uselistorder_bb"
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;; Linkage types
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"private" "internal" "weak" "weak_odr" "linkonce" "linkonce_odr" "available_externally" "appending" "common" "extern_weak" "external"
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"uninitialized" "implementation" "..."
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;; Values
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"true" "false" "null" "undef" "zeroinitializer" "none" "c" "asm" "blockaddress" "poison"
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;; Calling conventions
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"ccc" "fastcc" "coldcc" "webkit_jscc" "anyregcc" "preserve_mostcc" "preserve_allcc"
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"cxx_fast_tlscc" "swiftcc" "tailcc" "swifttailcc" "cfguard_checkcc"
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;; Visibility styles
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"default" "hidden" "protected"
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;; DLL storages
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"dllimport" "dllexport"
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;; Thread local
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"thread_local" "localdynamic" "initialexec" "localexec"
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;; Runtime preemption specifiers
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"dso_preemptable" "dso_local" "dso_local_equivalent"
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"gc" "atomic" "no_cfi" "volatile" "personality" "prologue" "section") 'symbols) . font-lock-keyword-face)
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;; Arithmetic and Logical Operators
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`(,(regexp-opt '("add" "sub" "mul" "sdiv" "udiv" "urem" "srem" "and" "or" "xor"
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"setne" "seteq" "setlt" "setgt" "setle" "setge") 'symbols) . font-lock-keyword-face)
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;; Floating-point operators
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`(,(regexp-opt '("fadd" "fsub" "fneg" "fmul" "fdiv" "frem") 'symbols) . font-lock-keyword-face)
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;; Special instructions
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`(,(regexp-opt '("phi" "tail" "call" "select" "to" "shl" "lshr" "ashr" "fcmp" "icmp" "va_arg" "landingpad" "freeze") 'symbols) . font-lock-keyword-face)
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;; Control instructions
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`(,(regexp-opt '("ret" "br" "switch" "invoke" "resume" "unwind" "unreachable" "indirectbr" "callbr") 'symbols) . font-lock-keyword-face)
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;; Memory operators
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`(,(regexp-opt '("malloc" "alloca" "free" "load" "store" "getelementptr" "fence" "cmpxchg" "atomicrmw") 'symbols) . font-lock-keyword-face)
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;; Casts
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`(,(regexp-opt '("bitcast" "inttoptr" "ptrtoint" "trunc" "zext" "sext" "fptrunc" "fpext" "fptoui" "fptosi" "uitofp" "sitofp" "addrspacecast") 'symbols) . font-lock-keyword-face)
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;; Vector ops
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`(,(regexp-opt '("extractelement" "insertelement" "shufflevector") 'symbols) . font-lock-keyword-face)
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;; Aggregate ops
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`(,(regexp-opt '("extractvalue" "insertvalue") 'symbols) . font-lock-keyword-face)
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;; Metadata types
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`(,(regexp-opt '("distinct") 'symbols) . font-lock-keyword-face)
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;; Atomic memory ordering constraints
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`(,(regexp-opt '("unordered" "monotonic" "acquire" "release" "acq_rel" "seq_cst") 'symbols) . font-lock-keyword-face)
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;; Fast-math flags
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`(,(regexp-opt '("nnan" "ninf" "nsz" "arcp" "contract" "afn" "reassoc" "fast") 'symbols) . font-lock-keyword-face)
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;; Use-list order directives
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`(,(regexp-opt '("uselistorder" "uselistorder_bb") 'symbols) . font-lock-keyword-face))
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"Syntax highlighting for LLVM.")
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;;;###autoload
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(define-derived-mode llvm-mode prog-mode "LLVM"
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"Major mode for editing LLVM source files.
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\\{llvm-mode-map}
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Runs `llvm-mode-hook' on startup."
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(setq font-lock-defaults `(llvm-font-lock-keywords))
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(setq-local comment-start ";"))
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;; Associate .ll files with llvm-mode
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;;;###autoload
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(add-to-list 'auto-mode-alist (cons "\\.ll\\'" 'llvm-mode))
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(provide 'llvm-mode)
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;;; llvm-mode.el ends here
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