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clang-cc1-options.txt
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| OVERVIEW: LLVM 'Clang' Compiler: http://clang.llvm.org | |
| USAGE: clang -cc1 [options] <inputs> | |
| OPTIONS: | |
| -add-plugin <name> Use the named plugin action in addition to the default action | |
| -analyze-function <value> | |
| Run analysis on specific function | |
| -analyzer-checker-help Display the list of analyzer checkers that are available | |
| -analyzer-checker <value> | |
| Choose analyzer checkers to enable | |
| -analyzer-config <value> | |
| Choose analyzer options to enable | |
| -analyzer-constraints <value> | |
| Source Code Analysis - Symbolic Constraint Engines | |
| -analyzer-disable-all-checks | |
| Disable all static analyzer checks | |
| -analyzer-disable-checker <value> | |
| Choose analyzer checkers to disable | |
| -analyzer-disable-retry-exhausted | |
| Do not re-analyze paths leading to exhausted nodes with a different strategy (may decrease code coverage) | |
| -analyzer-display-progress | |
| Emit verbose output about the analyzer's progress | |
| -analyzer-eagerly-assume | |
| Eagerly assume the truth/falseness of some symbolic constraints | |
| -analyzer-inline-max-stack-depth <value> | |
| Bound on stack depth while inlining (4 by default) | |
| -analyzer-inlining-mode <value> | |
| Specify the function selection heuristic used during inlining | |
| -analyzer-list-enabled-checkers | |
| Display the list of enabled analyzer checkers | |
| -analyzer-max-loop <value> | |
| The maximum number of times the analyzer will go through a loop | |
| -analyzer-opt-analyze-headers | |
| Force the static analyzer to analyze functions defined in header files | |
| -analyzer-opt-analyze-nested-blocks | |
| Analyze the definitions of blocks in addition to functions | |
| -analyzer-output <value> | |
| Source Code Analysis - Output Options | |
| -analyzer-purge <value> Source Code Analysis - Dead Symbol Removal Frequency | |
| -analyzer-stats Print internal analyzer statistics. | |
| -analyzer-store <value> Source Code Analysis - Abstract Memory Store Models | |
| -analyzer-viz-egraph-graphviz | |
| Display exploded graph using GraphViz | |
| -analyzer-viz-egraph-ubigraph | |
| Display exploded graph using Ubigraph | |
| -analyze Run static analysis engine | |
| -arange_sections Emit DWARF .debug_arange sections | |
| -arcmt-check Check for ARC migration issues that need manual handling | |
| -arcmt-migrate-emit-errors | |
| Emit ARC errors even if the migrator can fix them | |
| -arcmt-migrate-report-output <value> | |
| Output path for the plist report | |
| -arcmt-migrate Apply modifications and produces temporary files that conform to ARC | |
| -arcmt-modify Apply modifications to files to conform to ARC | |
| -ast-dump-all Build ASTs and then debug dump them, forcing deserialization | |
| -ast-dump-filter <dump_filter> | |
| Use with -ast-dump or -ast-print to dump/print only AST declaration nodes having a certain substring in a qualified name. Use -ast-list to list all filterable declaration node names. | |
| -ast-dump-lookups Build ASTs and then debug dump their name lookup tables | |
| -ast-dump Build ASTs and then debug dump them | |
| -ast-list Build ASTs and print the list of declaration node qualified names | |
| -ast-merge <ast file> Merge the given AST file into the translation unit being compiled. | |
| -ast-print Build ASTs and then pretty-print them | |
| -ast-view Build ASTs and view them with GraphViz | |
| -aux-triple <value> Auxiliary target triple. | |
| -backend-option <value> Additional arguments to forward to LLVM backend (during code gen) | |
| -c-isystem <directory> Add directory to the C SYSTEM include search path | |
| -CC Include comments from within macros in preprocessed output | |
| -cfg-add-implicit-dtors Add C++ implicit destructors to CFGs for all analyses | |
| -chain-include <file> Include and chain a header file after turning it into PCH | |
| -cl-denorms-are-zero OpenCL only. Allow denormals to be flushed to zero. | |
| -cl-ext=<value> OpenCL only. Enable or disable OpenCL extensions. The argument is a comma-separated sequence of one or more extension names, each prefixed by '+' or '-'. | |
| -cl-fast-relaxed-math OpenCL only. Sets -cl-finite-math-only and -cl-unsafe-math-optimizations, and defines __FAST_RELAXED_MATH__. | |
| -cl-finite-math-only OpenCL only. Allow floating-point optimizations that assume arguments and results are not NaNs or +-Inf. | |
| -cl-fp32-correctly-rounded-divide-sqrt | |
| OpenCL only. Specify that single precision floating-point divide and sqrt used in the program source are correctly rounded. | |
| -cl-kernel-arg-info OpenCL only. Generate kernel argument metadata. | |
| -cl-mad-enable OpenCL only. Allow use of less precise MAD computations in the generated binary. | |
| -cl-no-signed-zeros OpenCL only. Allow use of less precise no signed zeros computations in the generated binary. | |
| -cl-opt-disable OpenCL only. This option disables all optimizations. By default optimizations are enabled. | |
| -cl-single-precision-constant | |
| OpenCL only. Treat double precision floating-point constant as single precision constant. | |
| -cl-std=<value> OpenCL language standard to compile for. | |
| -cl-strict-aliasing OpenCL only. This option is added for compatibility with OpenCL 1.0. | |
| -cl-unsafe-math-optimizations | |
| OpenCL only. Allow unsafe floating-point optimizations. Also implies -cl-no-signed-zeros and -cl-mad-enable. | |
| -code-completion-at <file>:<line>:<column> | |
| Dump code-completion information at a location | |
| -code-completion-brief-comments | |
| Include brief documentation comments in code-completion results. | |
| -code-completion-macros Include macros in code-completion results | |
| -code-completion-patterns | |
| Include code patterns in code-completion results | |
| -compress-debug-sections=<value> | |
| DWARF debug sections compression type | |
| -compress-debug-sections | |
| DWARF debug sections compression | |
| -coverage-cfg-checksum Emit CFG checksum for functions in .gcno files. | |
| -coverage-data-file <value> | |
| Emit coverage data to this filename. | |
| -coverage-exit-block-before-body | |
| Emit the exit block before the body blocks in .gcno files. | |
| -coverage-no-function-names-in-data | |
| Emit function names in .gcda files. | |
| -coverage-notes-file <value> | |
| Emit coverage notes to this filename. | |
| -coverage-version=<value> | |
| Four-byte version string for gcov files. | |
| -cxx-isystem <directory> | |
| Add directory to the C++ SYSTEM include search path | |
| -C Include comments in preprocessed output | |
| -dD Print macro definitions in -E mode in addition to normal output | |
| -debug-info-macro Emit macro debug information | |
| -dependency-dot <value> Filename to write DOT-formatted header dependencies to | |
| -dependency-file <value> | |
| Filename (or -) to write dependency output to | |
| --dependent-lib=<value> Add dependent library | |
| -detailed-preprocessing-record | |
| include a detailed record of preprocessing actions | |
| -diagnostic-log-file <value> | |
| Filename (or -) to log diagnostics to | |
| -disable-free Disable freeing of memory on exit | |
| -disable-lifetime-markers | |
| Disable lifetime-markers emission even when optimizations are enabled | |
| -disable-llvm-passes Use together with -emit-llvm to get pristine LLVM IR from the frontend by not running any LLVM passes at all | |
| -disable-llvm-verifier Don't run the LLVM IR verifier pass | |
| -disable-O0-optnone Disable adding the optnone attribute to functions at O0 | |
| -disable-objc-default-synthesize-properties | |
| disable the default synthesis of Objective-C properties | |
| -disable-red-zone Do not emit code that uses the red zone. | |
| -discard-value-names Discard value names in LLVM IR | |
| -dI Print include directives in -E mode in addition to normal output | |
| -dM Print macro definitions in -E mode instead of normal output | |
| -dump-coverage-mapping Dump the coverage mapping records, for testing | |
| -dump-deserialized-decls | |
| Dump declarations that are deserialized from PCH, for testing | |
| -dump-raw-tokens Lex file in raw mode and dump raw tokens | |
| -dump-tokens Run preprocessor, dump internal rep of tokens | |
| -dwarf-column-info Turn on column location information. | |
| -dwarf-debug-flags <value> | |
| The string to embed in the Dwarf debug flags record. | |
| -dwarf-ext-refs Generate debug info with external references to clang modules or precompiled headers | |
| -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted) | |
| -emit-codegen-only Generate machine code, but discard output | |
| -emit-html Output input source as HTML | |
| -emit-llvm-bc Build ASTs then convert to LLVM, emit .bc file | |
| -emit-llvm-only Build ASTs and convert to LLVM, discarding output | |
| -emit-llvm-uselists Preserve order of LLVM use-lists when serializing | |
| -emit-llvm Use the LLVM representation for assembler and object files | |
| -emit-module-interface Generate pre-compiled module file from a C++ module interface | |
| -emit-module Generate pre-compiled module file from a module map | |
| -emit-obj Emit native object files | |
| -emit-pch Generate pre-compiled header file | |
| -emit-pth Generate pre-tokenized header file | |
| -enable-split-dwarf Use split dwarf/Fission | |
| -Eonly Just run preprocessor, no output (for timings) | |
| -error-on-deserialized-decl <value> | |
| Emit error if a specific declaration is deserialized from PCH, for testing | |
| -E Only run the preprocessor | |
| -faddress-space-map-mangling=<yes|no|target> | |
| Set the mode for address space map based mangling; OpenCL testing purposes only | |
| -faligned-alloc-unavailable | |
| Aligned allocation/deallocation functions are unavailable | |
| -faligned-allocation Enable C++17 aligned allocation functions | |
| -fallow-editor-placeholders | |
| Treat editor placeholders as valid source code | |
| -fallow-half-arguments-and-returns | |
| Allow function arguments and returns of type half | |
| -fallow-pch-with-compiler-errors | |
| Accept a PCH file that was created with compiler errors | |
| -fansi-escape-codes Use ANSI escape codes for diagnostics | |
| -fapple-kext Use Apple's kernel extensions ABI | |
| -fapple-pragma-pack Enable Apple gcc-compatible #pragma pack handling | |
| -fapplication-extension Restrict code to those available for App Extensions | |
| -fblocks-runtime-optional | |
| Weakly link in the blocks runtime | |
| -fblocks Enable the 'blocks' language feature | |
| -fborland-extensions Accept non-standard constructs supported by the Borland compiler | |
| -fbracket-depth <value> Maximum nesting level for parentheses, brackets, and braces | |
| -fbuild-session-timestamp=<time since Epoch in seconds> | |
| Time when the current build session started | |
| -fcaret-diagnostics-max-lines <N> | |
| Set the maximum number of source lines to show in a caret diagnostic | |
| -fclang-abi-compat=<version> | |
| Attempt to match the ABI of Clang <version> | |
| -fcolor-diagnostics Use colors in diagnostics | |
| -fcomment-block-commands=<arg> | |
| Treat each comma separated argument in <arg> as a documentation comment block command | |
| -fconcepts-ts Enable C++ Extensions for Concepts. | |
| -fconst-strings Use a const qualified type for string literals in C and ObjC | |
| -fconstant-string-class <class name> | |
| Specify the class to use for constant Objective-C string objects. | |
| -fconstexpr-backtrace-limit <N> | |
| Set the maximum number of entries to print in a constexpr evaluation backtrace (0 = no limit). | |
| -fconstexpr-depth <value> | |
| Maximum depth of recursive constexpr function calls | |
| -fconstexpr-steps <value> | |
| Maximum number of steps in constexpr function evaluation | |
| -fcoroutines-ts Enable support for the C++ Coroutines TS | |
| -fcoverage-mapping Generate coverage mapping to enable code coverage analysis | |
| -fcuda-allow-variadic-functions | |
| Allow variadic functions in CUDA device code. | |
| -fcuda-approx-transcendentals | |
| Use approximate transcendental functions | |
| -fcuda-flush-denormals-to-zero | |
| Flush denormal floating point values to zero in CUDA device mode. | |
| -fcuda-include-gpubinary <value> | |
| Incorporate CUDA device-side binary into host object file. | |
| -fcuda-is-device Generate code for CUDA device | |
| -fcxx-exceptions Enable C++ exceptions | |
| -fdata-sections Place each data in its own section (ELF Only) | |
| -fdebug-compilation-dir <value> | |
| The compilation directory to embed in the debug info. | |
| -fdebug-info-for-profiling | |
| Emit extra debug info to make sample profile more accurate. | |
| -fdebug-pass-manager Prints debug information for the new pass manager | |
| -fdebug-prefix-map=<value> | |
| remap file source paths in debug info | |
| -fdebug-types-section Place debug types in their own section (ELF Only) | |
| -fdebugger-cast-result-to-id | |
| Enable casting unknown expression results to id | |
| -fdebugger-objc-literal Enable special debugger support for Objective-C subscripting and literals | |
| -fdebugger-support Enable special debugger support behavior | |
| -fdeclspec Allow __declspec as a keyword | |
| -fdefault-calling-conv=<value> | |
| Set default MS calling convention | |
| -fdelayed-template-parsing | |
| Parse templated function definitions at the end of the translation unit | |
| -fdeprecated-macro Defines the __DEPRECATED macro | |
| -fdiagnostics-absolute-paths | |
| Print absolute paths in diagnostics | |
| -fdiagnostics-format <value> | |
| Change diagnostic formatting to match IDE and command line tools | |
| -fdiagnostics-hotness-threshold=<number> | |
| Prevent optimization remarks from being output if they do not have at least this profile count | |
| -fdiagnostics-parseable-fixits | |
| Print fix-its in machine parseable form | |
| -fdiagnostics-print-source-range-info | |
| Print source range spans in numeric form | |
| -fdiagnostics-show-category <value> | |
| Print diagnostic category | |
| -fdiagnostics-show-hotness | |
| Enable profile hotness information in diagnostic line | |
| -fdiagnostics-show-note-include-stack | |
| Display include stacks for diagnostic notes | |
| -fdiagnostics-show-option | |
| Print option name with mappable diagnostics | |
| -fdiagnostics-show-template-tree | |
| Print a template comparison tree for differing templates | |
| -fdisable-module-hash Disable the module hash | |
| -fdollars-in-identifiers | |
| Allow '$' in identifiers | |
| -fdump-record-layouts-simple | |
| Dump record layout information in a simple form used for testing | |
| -fdump-record-layouts Dump record layout information | |
| -fdump-vtable-layouts Dump the layouts of all vtables that will be emitted in a translation unit | |
| -fembed-bitcode=<option> | |
| Embed LLVM bitcode (option: off, all, bitcode, marker) | |
| -femit-all-decls Emit all declarations, even if unused | |
| -femit-coverage-data Instrument the program to emit gcov coverage data when run. | |
| -femit-coverage-notes Emit a gcov coverage notes file when compiling. | |
| -femulated-tls Use emutls functions to access thread_local variables | |
| -fencode-extended-block-signature | |
| enable extended encoding of block type signature | |
| -ferror-limit <N> Set the maximum number of errors to emit before stopping (0 = no limit). | |
| -fexceptions Enable support for exception handling | |
| -fexperimental-new-pass-manager | |
| Enables an experimental new pass manager in LLVM. | |
| -fexternc-nounwind Assume all functions with C linkage do not unwind | |
| -ffake-address-space-map | |
| Use a fake address space map; OpenCL testing purposes only | |
| -ffast-math Allow aggressive, lossy floating-point optimizations | |
| -fforbid-guard-variables | |
| Emit an error if a C++ static local initializer would need a guard variable | |
| -ffp-contract=<value> Form fused FP ops (e.g. FMAs): fast (everywhere) | on (according to FP_CONTRACT pragma, default) | off (never fuse) | |
| -ffreestanding Assert that the compilation takes place in a freestanding environment | |
| -ffunction-sections Place each function in its own section (ELF Only) | |
| -fgnu-keywords Allow GNU-extension keywords regardless of language standard | |
| -fgnu89-inline Use the gnu89 inline semantics | |
| -fimplicit-module-maps Implicitly search the file system for module map files. | |
| -finclude-default-header | |
| Include the default header file for OpenCL | |
| -find-pch-source=<value> | |
| When building a pch, try to find the input file in include directories, as if it had been included by the argument passed to this flag. | |
| -finline-functions Inline suitable functions | |
| -finline-hint-functions Inline functions which are (explicitly or implicitly) marked inline | |
| -finstrument-functions Generate calls to instrument function entry and exit | |
| -fix-only-warnings Apply fix-it advice only for warnings, not errors | |
| -fix-what-you-can Apply fix-it advice even in the presence of unfixable errors | |
| -fixit-recompile Apply fix-it changes and recompile | |
| -fixit-to-temporary Apply fix-it changes to temporary files | |
| -fixit=<value> Apply fix-it advice creating a file with the given suffix | |
| -fixit Apply fix-it advice to the input source | |
| -flto-jobs=<value> Controls the backend parallelism of -flto=thin (default of 0 means the number of threads will be derived from the number of CPUs detected) | |
| -flto-unit Emit IR to support LTO unit features (CFI, whole program vtable opt) | |
| -flto-visibility-public-std | |
| Use public LTO visibility for classes in std and stdext namespaces | |
| -flto=<value> Set LTO mode to either 'full' or 'thin' | |
| -flto Enable LTO in 'full' mode | |
| -fmacro-backtrace-limit <N> | |
| Set the maximum number of entries to print in a macro expansion backtrace (0 = no limit). | |
| -fmath-errno Require math functions to indicate errors by setting errno | |
| -fmax-type-align=<value> | |
| Specify the maximum alignment to enforce on pointers lacking an explicit alignment | |
| -fmerge-functions Permit merging of identical functions when optimizing. | |
| -fmessage-length <N> Format message diagnostics so that they fit within N columns or fewer, when possible. | |
| -fmodule-feature <feature> | |
| Enable <feature> in module map requires declarations | |
| -fmodule-file=<file> Load this precompiled module file | |
| -fmodule-format=<value> Select the container format for clang modules and PCH. Supported options are 'raw' and 'obj'. | |
| -fmodule-map-file-home-is-cwd | |
| Use the current working directory as the home directory of module maps specified by -fmodule-map-file=<FILE> | |
| -fmodule-map-file=<file> | |
| Load this module map file | |
| -fmodule-name=<name> Specify the name of the module to build | |
| -fmodules-cache-path=<directory> | |
| Specify the module cache path | |
| -fmodules-codegen Generate code for uses of this module that assumes an explicit object file will be built for the module | |
| -fmodules-debuginfo Generate debug info for types in an object file built from this module and do not generate them elsewhere | |
| -fmodules-decluse Require declaration of modules used within a module | |
| -fmodules-disable-diagnostic-validation | |
| Disable validation of the diagnostic options when loading the module | |
| -fmodules-embed-all-files<value> | |
| Embed the contents of all files read by this compilation into the produced module file. | |
| -fmodules-embed-file=<file> | |
| Embed the contents of the specified file into the module file being compiled. | |
| -fmodules-hash-content Enable hashing the content of a module file | |
| -fmodules-ignore-macro=<value> | |
| Ignore the definition of the given macro when building and loading modules | |
| -fmodules-local-submodule-visibility | |
| Enforce name visibility rules across submodules of the same top-level module. | |
| -fmodules-prune-after=<seconds> | |
| Specify the interval (in seconds) after which a module file will be considered unused | |
| -fmodules-prune-interval=<seconds> | |
| Specify the interval (in seconds) between attempts to prune the module cache | |
| -fmodules-search-all Search even non-imported modules to resolve references | |
| -fmodules-strict-decluse | |
| Like -fmodules-decluse but requires all headers to be in modules | |
| -fmodules-ts Enable support for the C++ Modules TS | |
| -fmodules-user-build-path <directory> | |
| Specify the module user build path | |
| -fmodules-validate-once-per-build-session | |
| Don't verify input files for the modules if the module has been successfully validated or loaded during this build session | |
| -fmodules-validate-system-headers | |
| Validate the system headers that a module depends on when loading the module | |
| -fmodules Enable the 'modules' language feature | |
| -fms-compatibility-version=<value> | |
| Dot-separated value representing the Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default)) | |
| -fms-compatibility Enable full Microsoft Visual C++ compatibility | |
| -fms-extensions Accept some non-standard constructs supported by the Microsoft compiler | |
| -fnative-half-arguments-and-returns | |
| Use the native __fp16 type for arguments and returns (and skip ABI-specific lowering) | |
| -fnative-half-type Use the native half type for __fp16 instead of promoting to float | |
| -fnew-alignment=<align> Specifies the largest alignment guaranteed by '::operator new(size_t)' | |
| -fno-access-control Disable C++ access control | |
| -fno-assume-sane-operator-new | |
| Don't assume that C++'s global operator new can't alias any pointer | |
| -fno-autolink Disable generation of linker directives for automatic library linking | |
| -fno-bitfield-type-align | |
| Ignore bit-field types when aligning structures | |
| -fno-builtin-<value> Disable implicit builtin knowledge of a specific function | |
| -fno-builtin Disable implicit builtin knowledge of functions | |
| -fno-common Compile common globals like normal definitions | |
| -fno-const-strings Don't use a const qualified type for string literals in C and ObjC | |
| -fno-constant-cfstrings Disable creation of CodeFoundation-type constant strings | |
| -fno-cuda-host-device-constexpr | |
| Don't treat unattributed constexpr functions as __host__ __device__. | |
| -fno-debug-pass-manager Disables debug printing for the new pass manager | |
| -fno-declspec Disallow __declspec as a keyword | |
| -fno-deprecated-macro Undefines the __DEPRECATED macro | |
| -fno-diagnostics-fixit-info | |
| Do not include fixit information in diagnostics | |
| -fno-diagnostics-use-presumed-location | |
| Ignore #line directives when displaying diagnostic locations | |
| -fno-dollars-in-identifiers | |
| Disallow '$' in identifiers | |
| -fno-elide-constructors Disable C++ copy constructor elision | |
| -fno-elide-type Do not elide types when printing diagnostics | |
| -fno-experimental-new-pass-manager | |
| Disables an experimental new pass manager in LLVM. | |
| -fno-gnu-inline-asm Disable GNU style inline asm | |
| -fno-integrated-as Disable the integrated assembler | |
| -fno-jump-tables Do not use jump tables for lowering switches | |
| -fno-lax-vector-conversions | |
| Disallow implicit conversions between vectors with a different number of elements or different element types | |
| -fno-math-builtin Disable implicit builtin knowledge of math functions | |
| -fno-merge-all-constants | |
| Disallow merging of constants | |
| -fno-modules-error-recovery | |
| Do not automatically import modules for error recovery | |
| -fno-modules-global-index | |
| Do not automatically generate or update the global module index | |
| -fno-objc-infer-related-result-type | |
| do not infer Objective-C related result type based on method family | |
| -fno-operator-names Do not treat C++ operator name keywords as synonyms for operators | |
| -fno-pch-timestamp Disable inclusion of timestamp in precompiled headers | |
| -fno-preserve-as-comments | |
| Do not preserve comments in inline assembly | |
| -fno-rtti-data Control emission of RTTI data | |
| -fno-rtti Disable generation of rtti information | |
| -fno-sanitize-address-use-after-scope | |
| Disable use-after-scope detection in AddressSanitizer | |
| -fno-sanitize-blacklist Don't use blacklist file for sanitizers | |
| -fno-sanitize-cfi-cross-dso | |
| Disable control flow integrity (CFI) checks for cross-DSO calls. | |
| -fno-sanitize-coverage=<value> | |
| Disable specified features of coverage instrumentation for Sanitizers | |
| -fno-sanitize-memory-track-origins | |
| Disable origins tracking in MemorySanitizer | |
| -fno-sanitize-recover=<value> | |
| Disable recovery for specified sanitizers | |
| -fno-sanitize-stats Disable sanitizer statistics gathering. | |
| -fno-sanitize-thread-atomics | |
| Disable atomic operations instrumentation in ThreadSanitizer | |
| -fno-sanitize-thread-func-entry-exit | |
| Disable function entry/exit instrumentation in ThreadSanitizer | |
| -fno-sanitize-thread-memory-access | |
| Disable memory access instrumentation in ThreadSanitizer | |
| -fno-sanitize-trap=<value> | |
| Disable trapping for specified sanitizers | |
| -fno-short-wchar Force wchar_t to be an unsigned int | |
| -fno-show-column Do not include column number on diagnostics | |
| -fno-show-source-location | |
| Do not include source location information with diagnostics | |
| -fno-signed-char Char is unsigned | |
| -fno-signed-zeros Allow optimizations that ignore the sign of floating point zeros | |
| -fno-spell-checking Disable spell-checking | |
| -fno-threadsafe-statics Do not emit code to make initialization of local statics thread safe | |
| -fno-trigraphs Do not process trigraph sequences | |
| -fno-unroll-loops Turn off loop unroller | |
| -fno-use-cxa-atexit Don't use __cxa_atexit for calling destructors | |
| -fno-use-init-array Don't use .init_array instead of .ctors | |
| -fno-validate-pch Disable validation of precompiled headers | |
| -fno-wchar Disable C++ builtin type wchar_t | |
| -fobjc-arc-cxxlib=<value> | |
| Objective-C++ Automatic Reference Counting standard library kind | |
| -fobjc-arc-exceptions Use EH-safe code when synthesizing retains and releases in -fobjc-arc | |
| -fobjc-arc Synthesize retain and release calls for Objective-C pointers | |
| -fobjc-dispatch-method=<value> | |
| Objective-C dispatch method to use | |
| -fobjc-exceptions Enable Objective-C exceptions | |
| -fobjc-gc-only Use GC exclusively for Objective-C related memory management | |
| -fobjc-gc Enable Objective-C garbage collection | |
| -fobjc-runtime-has-weak The target Objective-C runtime supports ARC weak operations | |
| -fobjc-runtime=<value> Specify the target Objective-C runtime kind and version | |
| -fobjc-subscripting-legacy-runtime | |
| Allow Objective-C array and dictionary subscripting in legacy runtime | |
| -fobjc-weak Enable ARC-style weak references in Objective-C | |
| -fopenmp-host-ir-file-path <value> | |
| Path to the IR file produced by the frontend for the host. | |
| -fopenmp-is-device Generate code only for an OpenMP target device. | |
| -fopenmp-targets=<value> | |
| Specify comma-separated list of triples OpenMP offloading targets to be supported | |
| -foperator-arrow-depth <value> | |
| Maximum number of 'operator->'s to call for a member access | |
| -foverride-record-layout=<value> | |
| Override record layouts with those in the given file | |
| -fpack-struct=<value> Specify the default maximum struct packing alignment | |
| -fpascal-strings Recognize and construct Pascal-style string literals | |
| -fpcc-struct-return Override the default ABI to return all structs on the stack | |
| -fprebuilt-module-path=<directory> | |
| Specify the prebuilt module path | |
| -fpreserve-vec3-type Preserve 3-component vector type | |
| -fprofile-instrument-path=<value> | |
| Generate instrumented code to collect execution counts into <file> (overridden by LLVM_PROFILE_FILE env var) | |
| -fprofile-instrument-use-path=<value> | |
| Specify the profile path in PGO use compilation | |
| -fprofile-instrument=<value> | |
| Enable PGO instrumentation. The accepted value is clang, llvm, or none | |
| -fprofile-sample-use=<value> | |
| Enable sample-based profile guided optimizations | |
| -freciprocal-math Allow division operations to be reassociated | |
| -freg-struct-return Override the default ABI to return small structs in registers | |
| -frelaxed-template-template-args | |
| Enable C++17 relaxed template template argument matching | |
| -freroll-loops Turn on loop reroller | |
| -fsanitize-address-field-padding=<value> | |
| Level of field padding for AddressSanitizer | |
| -fsanitize-address-globals-dead-stripping | |
| Enable linker dead stripping of globals in AddressSanitizer | |
| -fsanitize-address-use-after-scope | |
| Enable use-after-scope detection in AddressSanitizer | |
| -fsanitize-blacklist=<value> | |
| Path to blacklist file for sanitizers | |
| -fsanitize-cfi-cross-dso | |
| Enable control flow integrity (CFI) checks for cross-DSO calls. | |
| -fsanitize-coverage-8bit-counters | |
| Enable frequency counters in sanitizer coverage | |
| -fsanitize-coverage-indirect-calls | |
| Enable sanitizer coverage for indirect calls | |
| -fsanitize-coverage-inline-8bit-counters | |
| Enable inline 8-bit counters in sanitizer coverage | |
| -fsanitize-coverage-no-prune | |
| Disable coverage pruning (i.e. instrument all blocks/edges) | |
| -fsanitize-coverage-trace-bb | |
| Enable basic block tracing in sanitizer coverage | |
| -fsanitize-coverage-trace-cmp | |
| Enable cmp instruction tracing in sanitizer coverage | |
| -fsanitize-coverage-trace-div | |
| Enable div instruction tracing in sanitizer coverage | |
| -fsanitize-coverage-trace-gep | |
| Enable gep instruction tracing in sanitizer coverage | |
| -fsanitize-coverage-trace-pc-guard | |
| Enable PC tracing with guard in sanitizer coverage | |
| -fsanitize-coverage-trace-pc | |
| Enable PC tracing in sanitizer coverage | |
| -fsanitize-coverage-type=<value> | |
| Sanitizer coverage type | |
| -fsanitize-coverage=<value> | |
| Specify the type of coverage instrumentation for Sanitizers | |
| -fsanitize-memory-track-origins=<value> | |
| Enable origins tracking in MemorySanitizer | |
| -fsanitize-memory-track-origins | |
| Enable origins tracking in MemorySanitizer | |
| -fsanitize-memory-use-after-dtor | |
| Enable use-after-destroy detection in MemorySanitizer | |
| -fsanitize-recover=<value> | |
| Enable recovery for specified sanitizers | |
| -fsanitize-stats Enable sanitizer statistics gathering. | |
| -fsanitize-thread-atomics | |
| Enable atomic operations instrumentation in ThreadSanitizer (default) | |
| -fsanitize-thread-func-entry-exit | |
| Enable function entry/exit instrumentation in ThreadSanitizer (default) | |
| -fsanitize-thread-memory-access | |
| Enable memory access instrumentation in ThreadSanitizer (default) | |
| -fsanitize-trap=<value> Enable trapping for specified sanitizers | |
| -fsanitize-undefined-strip-path-components=<number> | |
| Strip (or keep only, if negative) a given number of path components when emitting check metadata. | |
| -fsanitize=<check> Turn on runtime checks for various forms of undefined or suspicious behavior. See user manual for available checks | |
| -fshort-enums Allocate to an enum type only as many bytes as it needs for the declared range of possible values | |
| -fshort-wchar Force wchar_t to be a short unsigned int | |
| -fshow-overloads=<value> | |
| Which overload candidates to show when overload resolution fails: best|all; defaults to all | |
| -fsized-deallocation Enable C++14 sized global deallocation functions | |
| -fsjlj-exceptions Use SjLj style exceptions | |
| -fspell-checking-limit <N> | |
| Set the maximum number of times to perform spell checking on unrecognized identifiers (0 = no limit). | |
| -fsplit-dwarf-inlining Place debug types in their own section (ELF Only) | |
| -fstrict-enums Enable optimizations based on the strict definition of an enum's value range | |
| -fstrict-return Always treat control flow paths that fall off the end of a non-void function as unreachable | |
| -fstrict-vtable-pointers | |
| Enable optimizations based on the strict rules for overwriting polymorphic C++ objects | |
| -ftabstop <N> Set the tab stop distance. | |
| -ftemplate-backtrace-limit <N> | |
| Set the maximum number of entries to print in a template instantiation backtrace (0 = no limit). | |
| -ftemplate-depth <value> | |
| Maximum depth of recursive template instantiation | |
| -ftest-module-file-extension=<value> | |
| introduce a module file extension for testing purposes. The argument is parsed as blockname:major:minor:hashed:user info | |
| -fthin-link-bitcode=<value> | |
| Write minimized bitcode to <file> for the ThinLTO thin link only | |
| -fthinlto-index=<value> Perform ThinLTO importing using provided function summary index | |
| -ftrap-function=<value> Issue call to specified function rather than a trap instruction | |
| -ftrapv Trap on integer overflow | |
| -ftrigraphs Process trigraph sequences | |
| -ftype-visibility <value> | |
| Default type visibility | |
| -funique-section-names Use unique names for text and data sections (ELF Only) | |
| -funknown-anytype Enable parser support for the __unknown_anytype type; for testing purposes only | |
| -funroll-loops Turn on loop unroller | |
| -fuse-init-array Use .init_array instead of .ctors | |
| -fuse-register-sized-bitfield-access | |
| Use register sized accesses to bit-fields, when possible. | |
| -fveclib=<value> Use the given vector functions library | |
| -fvisibility-inlines-hidden | |
| Give inline C++ member functions default visibility by default | |
| -fvisibility <value> Default type and symbol visibility | |
| -fwhole-program-vtables Enables whole-program vtable optimization. Requires -flto | |
| -fwrapv Treat signed integer overflow as two's complement | |
| -fwritable-strings Store string literals as writable data | |
| -fxray-always-instrument= <value> | |
| Filename defining the whitelist for imbuing the 'always instrument' XRay attribute. | |
| -fxray-instruction-threshold= <value> | |
| Sets the minimum function size to instrument with XRay | |
| -fxray-instrument Generate XRay instrumentation sleds on function entry and exit | |
| -fxray-never-instrument= <value> | |
| Filename defining the whitelist for imbuing the 'never instrument' XRay attribute. | |
| -fzvector Enable System z vector language extension | |
| -F <value> Add directory to framework include search path | |
| -gcodeview Generate CodeView debug information | |
| -gnu-pubnames Emit newer GNU style pubnames | |
| -header-include-file <value> | |
| Filename (or -) to write header include output to | |
| -help Display available options | |
| -H Show header includes and nesting depth | |
| -idirafter <value> Add directory to AFTER include search path | |
| -iframeworkwithsysroot <directory> | |
| Add directory to SYSTEM framework search path, absolute paths are relative to -isysroot | |
| -iframework <value> Add directory to SYSTEM framework search path | |
| -imacros <file> Include macros from file before parsing | |
| -include-pch <file> Include precompiled header file | |
| -include-pth <file> Include file before parsing | |
| -include <file> Include file before parsing | |
| -index-header-map Make the next included directory (-I or -F) an indexer header map | |
| -init-only Only execute frontend initialization | |
| -internal-externc-isystem <directory> | |
| Add directory to the internal system include search path with implicit extern "C" semantics; these are assumed to not be user-provided and are used to model system and standard headers' paths. | |
| -internal-isystem <directory> | |
| Add directory to the internal system include search path; these are assumed to not be user-provided and are used to model system and standard headers' paths. | |
| -iprefix <dir> Set the -iwithprefix/-iwithprefixbefore prefix | |
| -iquote <directory> Add directory to QUOTE include search path | |
| -isysroot <dir> Set the system root directory (usually /) | |
| -isystem <directory> Add directory to SYSTEM include search path | |
| -ivfsoverlay <value> Overlay the virtual filesystem described by file over the real file system | |
| -iwithprefixbefore <dir> | |
| Set directory to include search path with prefix | |
| -iwithprefix <dir> Set directory to SYSTEM include search path with prefix | |
| -iwithsysroot <directory> | |
| Add directory to SYSTEM include search path, absolute paths are relative to -isysroot | |
| -I <dir> Add directory to include search path | |
| --linker-option=<value> Add linker option | |
| -load <dsopath> Load the named plugin (dynamic shared object) | |
| -main-file-name <value> Main file name to use for debug info | |
| -malign-double Align doubles to two words in structs (x86 only) | |
| -masm-verbose Generate verbose assembly output | |
| -massembler-fatal-warnings | |
| Make assembler warnings fatal | |
| -mbackchain Link stack frames through backchain on System Z | |
| -mcode-model <value> The code model to use | |
| -mconstructor-aliases Emit complete constructors and destructors as aliases when possible | |
| -mdebug-pass <value> Enable additional debug output | |
| -mdisable-fp-elim Disable frame pointer elimination optimization | |
| -mdisable-tail-calls Disable tail call optimization, keeping the call stack accurate | |
| -meabi <value> Set EABI type, e.g. 4, 5 or gnu (default depends on triple) | |
| -menable-no-infs Allow optimization to assume there are no infinities. | |
| -menable-no-nans Allow optimization to assume there are no NaNs. | |
| -menable-unsafe-fp-math Allow unsafe floating-point math optimizations which may decrease precision | |
| -mfentry Insert calls to fentry at function entry (x86 only) | |
| -mfloat-abi <value> The float ABI to use | |
| -mfpmath <value> Which unit to use for fp math | |
| -mglobal-merge Enable merging of globals | |
| -MG Add missing headers to depfile | |
| -mhvx-double Enable Hexagon Double Vector eXtensions | |
| -mhvx Enable Hexagon Vector eXtensions | |
| -migrate Migrate source code | |
| -mincremental-linker-compatible | |
| (integrated-as) Emit an object file which can be used with an incremental linker | |
| -mlimit-float-precision <value> | |
| Limit float precision to the given value | |
| -mlink-bitcode-file <value> | |
| Link the given bitcode file before performing optimizations. | |
| -mlink-cuda-bitcode <value> | |
| Link and internalize needed symbols from the given bitcode file before performing optimizations. | |
| -mllvm <value> Additional arguments to forward to LLVM's option processing | |
| -mms-bitfields Set the default structure layout to be compatible with the Microsoft compiler standard | |
| -mno-global-merge Disable merging of globals | |
| -mno-hvx-double Disable Hexagon Double Vector eXtensions | |
| -mno-hvx Disable Hexagon Vector eXtensions | |
| -mno-zero-initialized-in-bss | |
| Do not put zero initialized data in the BSS | |
| -mnoexecstack Mark the file as not needing an executable stack | |
| -module-dependency-dir <value> | |
| Directory to dump module dependencies to | |
| -module-file-deps Include module files in dependency output | |
| -module-file-info Provide information about a particular module file | |
| -momit-leaf-frame-pointer | |
| Omit frame pointer setup for leaf functions | |
| -mpie-copy-relocations Use copy relocations support for PIE builds | |
| -MP Create phony target for each dependency (other than main file) | |
| -mqdsp6-compat Enable hexagon-qdsp6 backward compatibility | |
| -MQ <value> Specify name of main file output to quote in depfile | |
| -mregparm <value> Limit the number of registers available for integer arguments | |
| -mrelax-all (integrated-as) Relax all machine instructions | |
| --mrelax-relocations Use relaxable elf relocations | |
| -mrelocation-model <value> | |
| The relocation model to use | |
| -mrtd Make StdCall calling convention the default | |
| -msave-temp-labels Save temporary labels in the symbol table. Note this may change .s semantics and shouldn't generally be used on compiler-generated code. | |
| -msoft-float Use software floating point | |
| -mstack-alignment=<value> | |
| Set the stack alignment | |
| -mstack-probe-size=<value> | |
| Set the stack probe size | |
| -mstackrealign Force realign the stack at entry to every function | |
| -mstrict-align Force all memory accesses to be aligned (same as mno-unaligned-access) | |
| -mt-migrate-directory <value> | |
| Directory for temporary files produced during ARC or ObjC migration | |
| -mthread-model <value> The thread model to use, e.g. posix, single (posix by default) | |
| -MT <value> Specify name of main file output in depfile | |
| -munwind-tables Generate unwinding tables for all functions | |
| -MV Use NMake/Jom format for the depfile | |
| -no-code-completion-globals | |
| Do not include global declarations in code-completion results. | |
| -no-emit-llvm-uselists Don't preserve order of LLVM use-lists when serializing | |
| -no-finalize-removal Do not remove finalize method in gc mode | |
| -no-implicit-float Don't generate implicit floating point instructions | |
| -no-ns-alloc-error Do not error on use of NSAllocateCollectable/NSReallocateCollectable | |
| -no-struct-path-tbaa Turn off struct-path aware Type Based Alias Analysis | |
| --no-system-header-prefix=<prefix> | |
| Treat all #include paths starting with <prefix> as not including a system header. | |
| -nobuiltininc Disable builtin #include directories | |
| -nostdinc++ Disable standard #include directories for the C++ standard library | |
| -nostdsysteminc Disable standard system #include directories | |
| -objc-isystem <directory> | |
| Add directory to the ObjC SYSTEM include search path | |
| -objcmt-atomic-property Make migration to 'atomic' properties | |
| -objcmt-migrate-all Enable migration to modern ObjC | |
| -objcmt-migrate-annotation | |
| Enable migration to property and method annotations | |
| -objcmt-migrate-designated-init | |
| Enable migration to infer NS_DESIGNATED_INITIALIZER for initializer methods | |
| -objcmt-migrate-instancetype | |
| Enable migration to infer instancetype for method result type | |
| -objcmt-migrate-literals | |
| Enable migration to modern ObjC literals | |
| -objcmt-migrate-ns-macros | |
| Enable migration to NS_ENUM/NS_OPTIONS macros | |
| -objcmt-migrate-property-dot-syntax | |
| Enable migration of setter/getter messages to property-dot syntax | |
| -objcmt-migrate-property | |
| Enable migration to modern ObjC property | |
| -objcmt-migrate-protocol-conformance | |
| Enable migration to add protocol conformance on classes | |
| -objcmt-migrate-readonly-property | |
| Enable migration to modern ObjC readonly property | |
| -objcmt-migrate-readwrite-property | |
| Enable migration to modern ObjC readwrite property | |
| -objcmt-migrate-subscripting | |
| Enable migration to modern ObjC subscripting | |
| -objcmt-ns-nonatomic-iosonly | |
| Enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's 'atomic' attribute | |
| -objcmt-returns-innerpointer-property | |
| Enable migration to annotate property with NS_RETURNS_INNER_POINTER | |
| -objcmt-whitelist-dir-path=<value> | |
| Only modify files with a filename contained in the provided directory path | |
| -objcxx-isystem <directory> | |
| Add directory to the ObjC++ SYSTEM include search path | |
| -opt-record-file <value> | |
| File name to use for YAML optimization record output | |
| -o <file> Write output to <file> | |
| -pg Enable mcount instrumentation | |
| -pic-is-pie File is for a position independent executable | |
| -pic-level <value> Value for __PIC__ | |
| -plugin-arg-<name> <arg> | |
| Pass <arg> to plugin <name> | |
| -plugin <name> Use the named plugin action instead of the default action (use "help" to list available options) | |
| -preamble-bytes=<value> Assume that the precompiled header is a precompiled preamble covering the first N bytes of the main file | |
| -print-decl-contexts Print DeclContexts and their Decls | |
| -print-ivar-layout Enable Objective-C Ivar layout bitmap print trace | |
| -print-preamble Print the "preamble" of a file, which is a candidate for implicit precompiled headers. | |
| -print-stats Print performance metrics and statistics | |
| -pthread Support POSIX threads in generated code | |
| -P Disable linemarker output in -E mode | |
| -relaxed-aliasing Turn off Type Based Alias Analysis | |
| -relocatable-pch Whether to build a relocatable precompiled header | |
| -remap-file <from>;<to> Replace the contents of the <from> file with the contents of the <to> file | |
| -resource-dir <value> The directory which holds the compiler resource files | |
| -rewrite-macros Expand macros without full preprocessing | |
| -rewrite-objc Rewrite Objective-C source to C++ | |
| -rewrite-test Rewriter playground | |
| -Rpass-analysis=<value> Report transformation analysis from optimization passes whose name matches the given POSIX regular expression | |
| -Rpass-missed=<value> Report missed transformations by optimization passes whose name matches the given POSIX regular expression | |
| -Rpass=<value> Report transformations performed by optimization passes whose name matches the given POSIX regular expression | |
| -R<remark> Enable the specified remark | |
| -serialize-diagnostic-file <filename> | |
| File for serializing diagnostics in a binary format | |
| --show-includes Print cl.exe style /showIncludes to stdout | |
| -split-dwarf-file <value> | |
| File name to use for split dwarf debug info output | |
| -split-dwarf Split out the dwarf .dwo sections | |
| -split-stacks Try to use a split stack if possible. | |
| -stack-protector-buffer-size <value> | |
| Lower bound for a buffer to be considered for stack protection | |
| -stack-protector <value> | |
| Enable stack protectors | |
| -static-define Should __STATIC__ be defined | |
| -stats-file=<value> Filename to write statistics to | |
| -std=<value> Language standard to compile for | |
| -stdlib=<value> C++ standard library to use | |
| -sys-header-deps Include system headers in dependency output | |
| --system-header-prefix=<prefix> | |
| Treat all #include paths starting with <prefix> as including a system header. | |
| -S Only run preprocess and compilation steps | |
| -target-abi <value> Target a particular ABI type | |
| -target-cpu <value> Target a specific cpu type | |
| -target-feature <value> Target specific attributes | |
| -target-linker-version <value> | |
| Target linker version | |
| -test-coverage Do not generate coverage files or remove coverage changes from IR | |
| -token-cache <path> Use specified token cache file | |
| -traditional-cpp Enable some traditional CPP emulation | |
| -trim-egraph Only show error-related paths in the analysis graph | |
| -triple <value> Specify target triple (e.g. i686-apple-darwin9) | |
| -undef undef all system defines | |
| -unoptimized-cfg Generate unoptimized CFGs for all analyses | |
| -U <macro> Undefine macro <macro> | |
| -vectorize-loops Run the Loop vectorization passes | |
| -vectorize-slp Run the SLP vectorization passes | |
| -verify-ignore-unexpected=<value> | |
| Ignore unexpected diagnostic messages | |
| -verify-ignore-unexpected | |
| Ignore unexpected diagnostic messages | |
| -verify-pch Load and verify that a pre-compiled header file is not stale | |
| -verify Verify diagnostic output using comment directives | |
| -version Print the compiler version | |
| -vtordisp-mode=<value> Control vtordisp placement on win32 targets | |
| -v Show commands to run and use verbose output | |
| -Wdeprecated Enable warnings for deprecated constructs and define __DEPRECATED | |
| -Wno-rewrite-macros Silence ObjC rewriting warnings | |
| -working-directory <value> | |
| Resolve file paths relative to the specified directory | |
| -W<warning> Enable the specified warning | |
| -w Suppress all warnings | |
| -x <language> Treat subsequent input files as having type <language> |
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