[llvm] r199429 - LTO: document LTO_API_VERSION for each API
Quentin Colombet
qcolombet at apple.com
Thu Jan 16 13:51:32 PST 2014
Thanks Duncan for doing that!
-Quentin
On Jan 16, 2014, at 1:37 PM, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote:
> Author: dexonsmith
> Date: Thu Jan 16 15:37:17 2014
> New Revision: 199429
>
> URL: http://llvm.org/viewvc/llvm-project?rev=199429&view=rev
> Log:
> LTO: document LTO_API_VERSION for each API
>
> Adding a doxygen comment for each bit of API to indicate at which
> LTO_API_VERSION each was available, manually gleaned from successive
> git-blames. A few notes:
>
> - LTO_API_VERSION was set to 3 at its introduction.
> - I've indicated all the API introduced before LTO_API_VERSION was
> around as available "prior to LTO_API_VERSION=3".
> - A number of API changes neglected to bump LTO_API_VERSION. These I've
> indicated as available at the *next* bump of LTO_API_VERSION.
>
> Modified:
> llvm/trunk/include/llvm-c/lto.h
>
> Modified: llvm/trunk/include/llvm-c/lto.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm-c/lto.h?rev=199429&r1=199428&r2=199429&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm-c/lto.h (original)
> +++ llvm/trunk/include/llvm-c/lto.h Thu Jan 16 15:37:17 2014
> @@ -42,6 +42,9 @@ typedef bool lto_bool_t;
>
> #define LTO_API_VERSION 7
>
> +/**
> + * \since prior to LTO_API_VERSION=3
> + */
> typedef enum {
> LTO_SYMBOL_ALIGNMENT_MASK = 0x0000001F, /* log2 of alignment */
> LTO_SYMBOL_PERMISSIONS_MASK = 0x000000E0,
> @@ -62,17 +65,26 @@ typedef enum {
> LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN = 0x00002800
> } lto_symbol_attributes;
>
> +/**
> + * \since prior to LTO_API_VERSION=3
> + */
> typedef enum {
> LTO_DEBUG_MODEL_NONE = 0,
> LTO_DEBUG_MODEL_DWARF = 1
> } lto_debug_model;
>
> +/**
> + * \since prior to LTO_API_VERSION=3
> + */
> typedef enum {
> LTO_CODEGEN_PIC_MODEL_STATIC = 0,
> LTO_CODEGEN_PIC_MODEL_DYNAMIC = 1,
> LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC = 2
> } lto_codegen_model;
>
> +/**
> + * \since LTO_API_VERSION=6
> + */
> typedef enum {
> LTO_INTERNALIZE_FULL = 0,
> LTO_INTERNALIZE_NONE = 1,
> @@ -91,6 +103,8 @@ extern "C" {
>
> /**
> * Returns a printable string.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern const char*
> lto_get_version(void);
> @@ -98,12 +112,16 @@ lto_get_version(void);
>
> /**
> * Returns the last error string or NULL if last operation was successful.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern const char*
> lto_get_error_message(void);
>
> /**
> * Checks if a file is a loadable object file.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_module_is_object_file(const char* path);
> @@ -111,6 +129,8 @@ lto_module_is_object_file(const char* pa
>
> /**
> * Checks if a file is a loadable object compiled for requested target.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_module_is_object_file_for_target(const char* path,
> @@ -119,6 +139,8 @@ lto_module_is_object_file_for_target(con
>
> /**
> * Checks if a buffer is a loadable object file.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_module_is_object_file_in_memory(const void* mem, size_t length);
> @@ -126,6 +148,8 @@ lto_module_is_object_file_in_memory(cons
>
> /**
> * Checks if a buffer is a loadable object compiled for requested target.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_module_is_object_file_in_memory_for_target(const void* mem, size_t length,
> @@ -135,6 +159,8 @@ lto_module_is_object_file_in_memory_for_
> /**
> * Loads an object file from disk.
> * Returns NULL on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_module_t
> lto_module_create(const char* path);
> @@ -143,6 +169,8 @@ lto_module_create(const char* path);
> /**
> * Loads an object file from memory.
> * Returns NULL on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_module_t
> lto_module_create_from_memory(const void* mem, size_t length);
> @@ -150,6 +178,8 @@ lto_module_create_from_memory(const void
> /**
> * Loads an object file from disk. The seek point of fd is not preserved.
> * Returns NULL on error (check lto_get_error_message() for details).
> + *
> + * \since LTO_API_VERSION=5
> */
> extern lto_module_t
> lto_module_create_from_fd(int fd, const char *path, size_t file_size);
> @@ -157,28 +187,34 @@ lto_module_create_from_fd(int fd, const
> /**
> * Loads an object file from disk. The seek point of fd is not preserved.
> * Returns NULL on error (check lto_get_error_message() for details).
> + *
> + * \since LTO_API_VERSION=5
> */
> extern lto_module_t
> lto_module_create_from_fd_at_offset(int fd, const char *path, size_t file_size,
> size_t map_size, off_t offset);
>
> -
> /**
> * Frees all memory internally allocated by the module.
> * Upon return the lto_module_t is no longer valid.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern void
> lto_module_dispose(lto_module_t mod);
>
> -
> /**
> * Returns triple string which the object module was compiled under.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern const char*
> lto_module_get_target_triple(lto_module_t mod);
>
> /**
> * Sets triple string with which the object will be codegened.
> + *
> + * \since LTO_API_VERSION=4
> */
> extern void
> lto_module_set_target_triple(lto_module_t mod, const char *triple);
> @@ -186,6 +222,8 @@ lto_module_set_target_triple(lto_module_
>
> /**
> * Returns the number of symbols in the object module.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern unsigned int
> lto_module_get_num_symbols(lto_module_t mod);
> @@ -193,6 +231,8 @@ lto_module_get_num_symbols(lto_module_t
>
> /**
> * Returns the name of the ith symbol in the object module.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern const char*
> lto_module_get_symbol_name(lto_module_t mod, unsigned int index);
> @@ -200,12 +240,16 @@ lto_module_get_symbol_name(lto_module_t
>
> /**
> * Returns the attributes of the ith symbol in the object module.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_symbol_attributes
> lto_module_get_symbol_attribute(lto_module_t mod, unsigned int index);
>
> /**
> * Diagnostic severity.
> + *
> + * \since LTO_API_VERSION=7
> */
> typedef enum {
> LTO_DS_ERROR,
> @@ -219,6 +263,8 @@ typedef enum {
> * \p diag is the actual diagnostic.
> * The diagnostic is not prefixed by any of severity keyword, e.g., 'error: '.
> * \p ctxt is used to pass the context set with the diagnostic handler.
> + *
> + * \since LTO_API_VERSION=7
> */
> typedef void (*lto_diagnostic_handler_t)(
> lto_codegen_diagnostic_severity_t severity, const char *diag, void *ctxt);
> @@ -227,6 +273,8 @@ typedef void (*lto_diagnostic_handler_t)
> * Set a diagnostic handler and the related context (void *).
> * This is more general than lto_get_error_message, as the diagnostic handler
> * can be called at anytime within lto.
> + *
> + * \since LTO_API_VERSION=7
> */
> extern void lto_codegen_set_diagnostic_handler(lto_code_gen_t,
> lto_diagnostic_handler_t,
> @@ -235,32 +283,35 @@ extern void lto_codegen_set_diagnostic_h
> /**
> * Instantiates a code generator.
> * Returns NULL on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_code_gen_t
> lto_codegen_create(void);
>
> -
> /**
> * Frees all code generator and all memory it internally allocated.
> * Upon return the lto_code_gen_t is no longer valid.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern void
> lto_codegen_dispose(lto_code_gen_t);
>
> -
> -
> /**
> * Add an object module to the set of modules for which code will be generated.
> * Returns true on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod);
>
> -
> -
> /**
> * Sets if debug info should be generated.
> * Returns true on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model);
> @@ -269,6 +320,8 @@ lto_codegen_set_debug_model(lto_code_gen
> /**
> * Sets which PIC code model to generated.
> * Returns true on error (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern lto_bool_t
> lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model);
> @@ -276,6 +329,8 @@ lto_codegen_set_pic_model(lto_code_gen_t
>
> /**
> * Sets the cpu to generate code for.
> + *
> + * \since LTO_API_VERSION=4
> */
> extern void
> lto_codegen_set_cpu(lto_code_gen_t cg, const char *cpu);
> @@ -284,12 +339,16 @@ lto_codegen_set_cpu(lto_code_gen_t cg, c
> /**
> * Sets the location of the assembler tool to run. If not set, libLTO
> * will use gcc to invoke the assembler.
> + *
> + * \since LTO_API_VERSION=3
> */
> extern void
> lto_codegen_set_assembler_path(lto_code_gen_t cg, const char* path);
>
> /**
> * Sets extra arguments that libLTO should pass to the assembler.
> + *
> + * \since LTO_API_VERSION=4
> */
> extern void
> lto_codegen_set_assembler_args(lto_code_gen_t cg, const char **args,
> @@ -298,6 +357,8 @@ lto_codegen_set_assembler_args(lto_code_
> /**
> * Sets the strategy to use during internalize. Default strategy is
> * LTO_INTERNALIZE_FULL.
> + *
> + * \since LTO_API_VERSION=6
> */
> extern void
> lto_codegen_set_internalize_strategy(lto_code_gen_t cg,
> @@ -306,6 +367,8 @@ lto_codegen_set_internalize_strategy(lto
> /**
> * Tells LTO optimization passes that this symbol must be preserved
> * because it is referenced by native code or a command line option.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern void
> lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, const char* symbol);
> @@ -314,6 +377,8 @@ lto_codegen_add_must_preserve_symbol(lto
> * Writes a new object file at the specified path that contains the
> * merged contents of all modules added so far.
> * Returns true on error (check lto_get_error_message() for details).
> + *
> + * \since LTO_API_VERSION=5
> */
> extern lto_bool_t
> lto_codegen_write_merged_modules(lto_code_gen_t cg, const char* path);
> @@ -325,6 +390,8 @@ lto_codegen_write_merged_modules(lto_cod
> * lto_code_gen_t and will be freed when lto_codegen_dispose()
> * is called, or lto_codegen_compile() is called again.
> * On failure, returns NULL (check lto_get_error_message() for details).
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern const void*
> lto_codegen_compile(lto_code_gen_t cg, size_t* length);
> @@ -332,6 +399,8 @@ lto_codegen_compile(lto_code_gen_t cg, s
> /**
> * Generates code for all added modules into one native object file.
> * The name of the file is written to name. Returns true on error.
> + *
> + * \since LTO_API_VERSION=5
> */
> extern lto_bool_t
> lto_codegen_compile_to_file(lto_code_gen_t cg, const char** name);
> @@ -339,6 +408,8 @@ lto_codegen_compile_to_file(lto_code_gen
>
> /**
> * Sets options to help debug codegen bugs.
> + *
> + * \since prior to LTO_API_VERSION=3
> */
> extern void
> lto_codegen_debug_options(lto_code_gen_t cg, const char *);
> @@ -346,6 +417,8 @@ lto_codegen_debug_options(lto_code_gen_t
> /**
> * Initializes LLVM disassemblers.
> * FIXME: This doesn't really belong here.
> + *
> + * \since LTO_API_VERSION=5
> */
> extern void
> lto_initialize_disassembler(void);
>
>
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