;; RUN: wasm-metadce --help | filecheck %s
;; CHECK: ================================================================================
;; CHECK-NEXT: wasm-metadce INFILE
;; CHECK-NEXT:
;; CHECK-NEXT: This tool performs dead code elimination (DCE) on a larger space that the wasm
;; CHECK-NEXT: module is just a part of. For example, if you have JS and wasm that are
;; CHECK-NEXT: connected, this can DCE the combined graph. By doing so, it is able to eliminate
;; CHECK-NEXT: wasm module exports, which otherwise regular optimizations cannot.
;; CHECK-NEXT:
;; CHECK-NEXT: This tool receives a representation of the reachability graph that the wasm
;; CHECK-NEXT: module resides in, which contains abstract nodes and connections showing what
;; CHECK-NEXT: they reach. Some of those nodes can represent the wasm module's imports and
;; CHECK-NEXT: exports. The tool then completes the graph by adding the internal parts of the
;; CHECK-NEXT: module, and does DCE on the entire thing.
;; CHECK-NEXT:
;; CHECK-NEXT: This tool will output a wasm module with dead code eliminated, and metadata
;; CHECK-NEXT: describing the things in the rest of the graph that can be eliminated as well.
;; CHECK-NEXT:
;; CHECK-NEXT: The graph description file should represent the graph in the following JSON-like
;; CHECK-NEXT: notation (note, this is not true JSON, things like comments, escaping,
;; CHECK-NEXT: single-quotes, etc. are not supported):
;; CHECK-NEXT:
;; CHECK-NEXT:   [
;; CHECK-NEXT:     {
;; CHECK-NEXT:       "name": "entity1",
;; CHECK-NEXT:       "reaches": ["entity2, "entity3"],
;; CHECK-NEXT:       "root": true
;; CHECK-NEXT:     },
;; CHECK-NEXT:     {
;; CHECK-NEXT:       "name": "entity2",
;; CHECK-NEXT:       "reaches": ["entity1, "entity4"]
;; CHECK-NEXT:     },
;; CHECK-NEXT:     {
;; CHECK-NEXT:       "name": "entity3",
;; CHECK-NEXT:       "reaches": ["entity1"],
;; CHECK-NEXT:       "export": "export1"
;; CHECK-NEXT:     },
;; CHECK-NEXT:     {
;; CHECK-NEXT:       "name": "entity4",
;; CHECK-NEXT:       "import": ["module", "import1"]
;; CHECK-NEXT:     },
;; CHECK-NEXT:   ]
;; CHECK-NEXT:
;; CHECK-NEXT: Each entity has a name and an optional list of the other entities it reaches. It
;; CHECK-NEXT: can also be marked as a root, export (with the export string), or import (with
;; CHECK-NEXT: the module and import strings). DCE then computes what is reachable from the
;; CHECK-NEXT: roots.
;; CHECK-NEXT: ================================================================================
;; CHECK-NEXT:
;; CHECK-NEXT:
;; CHECK-NEXT: wasm-opt options:
;; CHECK-NEXT: -----------------
;; CHECK-NEXT:
;; CHECK-NEXT:   --output,-o                          Output file (stdout if not specified)
;; CHECK-NEXT:
;; CHECK-NEXT:   --input-source-map,-ism              Consume source map from the specified
;; CHECK-NEXT:                                        file
;; CHECK-NEXT:
;; CHECK-NEXT:   --output-source-map,-osm             Emit source map to the specified file
;; CHECK-NEXT:
;; CHECK-NEXT:   --output-source-map-url,-osu         Emit specified string as source map URL
;; CHECK-NEXT:
;; CHECK-NEXT:   --emit-text,-S                       Emit text instead of binary for the
;; CHECK-NEXT:                                        output file
;; CHECK-NEXT:
;; CHECK-NEXT:   --debuginfo,-g                       Emit names section and debug info
;; CHECK-NEXT:
;; CHECK-NEXT:   --graph-file,-f                      Filename of the graph description file
;; CHECK-NEXT:
;; CHECK-NEXT:   --dump,-d                            Dump the combined graph file (useful for
;; CHECK-NEXT:                                        debugging)
;; CHECK-NEXT:
;; CHECK-NEXT:
;; CHECK-NEXT: Tool options:
;; CHECK-NEXT: -------------
;; CHECK-NEXT:
;; CHECK-NEXT:   --mvp-features,-mvp                  Disable all non-MVP features
;; CHECK-NEXT:
;; CHECK-NEXT:   --all-features,-all                  Enable all features
;; CHECK-NEXT:
;; CHECK-NEXT:   --detect-features                    (deprecated - this flag does nothing)
;; CHECK-NEXT:
;; CHECK-NEXT:   --quiet,-q                           Emit less verbose output and hide trivial
;; CHECK-NEXT:                                        warnings.
;; CHECK-NEXT:
;; CHECK-NEXT:   --experimental-poppy                 Parse wast files as Poppy IR for testing
;; CHECK-NEXT:                                        purposes.
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-sign-ext                    Enable sign extension operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-sign-ext                   Disable sign extension operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-threads                     Enable atomic operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-threads                    Disable atomic operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-mutable-globals             Enable mutable globals
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-mutable-globals            Disable mutable globals
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-nontrapping-float-to-int    Enable nontrapping float-to-int
;; CHECK-NEXT:                                        operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-nontrapping-float-to-int   Disable nontrapping float-to-int
;; CHECK-NEXT:                                        operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-simd                        Enable SIMD operations and types
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-simd                       Disable SIMD operations and types
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-bulk-memory                 Enable bulk memory operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-bulk-memory                Disable bulk memory operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-exception-handling          Enable exception handling operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-exception-handling         Disable exception handling operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-tail-call                   Enable tail call operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-tail-call                  Disable tail call operations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-reference-types             Enable reference types
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-reference-types            Disable reference types
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-multivalue                  Enable multivalue functions
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-multivalue                 Disable multivalue functions
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-gc                          Enable garbage collection
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-gc                         Disable garbage collection
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-memory64                    Enable memory64
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-memory64                   Disable memory64
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-relaxed-simd                Enable relaxed SIMD
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-relaxed-simd               Disable relaxed SIMD
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-extended-const              Enable extended const expressions
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-extended-const             Disable extended const expressions
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-strings                     Enable strings
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-strings                    Disable strings
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-multimemory                 Enable multimemory
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-multimemory                Disable multimemory
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-typed-continuations         Enable typed continuations
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-typed-continuations        Disable typed continuations
;; CHECK-NEXT:
;; CHECK-NEXT:   --enable-typed-function-references   Deprecated compatibility flag
;; CHECK-NEXT:
;; CHECK-NEXT:   --disable-typed-function-references  Deprecated compatibility flag
;; CHECK-NEXT:
;; CHECK-NEXT:   --no-validation,-n                   Disables validation, assumes inputs are
;; CHECK-NEXT:                                        correct
;; CHECK-NEXT:
;; CHECK-NEXT:   --pass-arg,-pa                       An argument passed along to optimization
;; CHECK-NEXT:                                        passes being run. Must be in the form
;; CHECK-NEXT:                                        KEY@VALUE
;; CHECK-NEXT:
;; CHECK-NEXT:   --closed-world,-cw                   Assume code outside of the module does
;; CHECK-NEXT:                                        not inspect or interact with GC and
;; CHECK-NEXT:                                        function references, even if they are
;; CHECK-NEXT:                                        passed out. The outside may hold on to
;; CHECK-NEXT:                                        them and pass them back in, but not
;; CHECK-NEXT:                                        inspect their contents or call them.
;; CHECK-NEXT:
;; CHECK-NEXT:
;; CHECK-NEXT: General options:
;; CHECK-NEXT: ----------------
;; CHECK-NEXT:
;; CHECK-NEXT:   --version                            Output version information and exit
;; CHECK-NEXT:
;; CHECK-NEXT:   --help,-h                            Show this help message and exit
;; CHECK-NEXT:
;; CHECK-NEXT:   --debug,-d                           Print debug information to stderr
;; CHECK-NEXT: