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b835b9cf36
We really ought to support no_sanitize("coverage") in line with other
sanitizers. This came up again in discussions on the Linux-kernel
mailing lists, because we currently do workarounds using objtool to
remove coverage instrumentation. Since that support is only on x86, to
continue support coverage instrumentation on other architectures, we
must support selectively disabling coverage instrumentation via function
attributes.
Unfortunately, for SanitizeCoverage, it has not been implemented as a
sanitizer via fsanitize= and associated options in Sanitizers.def, but
rolls its own option fsanitize-coverage. This meant that we never got
"automatic" no_sanitize attribute support.
Implement no_sanitize attribute support by special-casing the string
"coverage" in the NoSanitizeAttr implementation. To keep the feature as
unintrusive to existing IR generation as possible, define a new negative
function attribute NoSanitizeCoverage to propagate the information
through to the instrumentation pass.
Fixes: https://bugs.llvm.org/show_bug.cgi?id=49035
Reviewed By: vitalybuka, morehouse
Differential Revision: https://reviews.llvm.org/D102772
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_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" "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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