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January 31, 2024 17:54
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local ffi = require("ffi") | |
---@type string | |
local brew_prefix do | |
local f = assert(io.popen("brew --prefix libgccjit", "r")) | |
brew_prefix = f:read("*a"):sub(1, -2) | |
f:close() | |
end | |
local libgccjit = ffi.load(jit.os == "OSX" and string.format("%s/lib/gcc/current/libgccjit.dylib", brew_prefix) or "libgccjit") | |
ffi.cdef [[ | |
typedef struct FILE FILE; | |
/* A pure C API to enable client code to embed GCC as a JIT-compiler. | |
Copyright (C) 2013-2023 Free Software Foundation, Inc. | |
This file is part of GCC. | |
GCC is free software; you can redistribute it and/or modify it | |
under the terms of the GNU General Public License as published by | |
the Free Software Foundation; either version 3, or (at your option) | |
any later version. | |
GCC is distributed in the hope that it will be useful, but | |
WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
General Public License for more details. | |
You should have received a copy of the GNU General Public License | |
along with GCC; see the file COPYING3. If not see | |
<http://www.gnu.org/licenses/>. */ | |
/********************************************************************** | |
Data structures. | |
**********************************************************************/ | |
/* All structs within the API are opaque. */ | |
/* A gcc_jit_context encapsulates the state of a compilation. | |
You can set up options on it, and add types, functions and code, using | |
the API below. | |
Invoking gcc_jit_context_compile on it gives you a gcc_jit_result * | |
(or NULL), representing in-memory machine code. | |
You can call gcc_jit_context_compile repeatedly on one context, giving | |
multiple independent results. | |
Similarly, you can call gcc_jit_context_compile_to_file on a context | |
to compile to disk. | |
Eventually you can call gcc_jit_context_release to clean up the | |
context; any in-memory results created from it are still usable, and | |
should be cleaned up via gcc_jit_result_release. */ | |
typedef struct gcc_jit_context gcc_jit_context; | |
/* A gcc_jit_result encapsulates the result of an in-memory compilation. */ | |
typedef struct gcc_jit_result gcc_jit_result; | |
/* An object created within a context. Such objects are automatically | |
cleaned up when the context is released. | |
The class hierarchy looks like this: | |
+- gcc_jit_object | |
+- gcc_jit_location | |
+- gcc_jit_type | |
+- gcc_jit_struct | |
+- gcc_jit_function_type | |
+- gcc_jit_vector_type | |
+- gcc_jit_field | |
+- gcc_jit_function | |
+- gcc_jit_block | |
+- gcc_jit_rvalue | |
+- gcc_jit_lvalue | |
+- gcc_jit_param | |
+- gcc_jit_case | |
+- gcc_jit_extended_asm | |
*/ | |
typedef struct gcc_jit_object gcc_jit_object; | |
/* A gcc_jit_location encapsulates a source code location, so that | |
you can (optionally) associate locations in your language with | |
statements in the JIT-compiled code, allowing the debugger to | |
single-step through your language. | |
Note that to do so, you also need to enable | |
GCC_JIT_BOOL_OPTION_DEBUGINFO | |
on the gcc_jit_context. | |
gcc_jit_location instances are optional; you can always pass | |
NULL. */ | |
typedef struct gcc_jit_location gcc_jit_location; | |
/* A gcc_jit_type encapsulates a type e.g. "int" or a "struct foo*". */ | |
typedef struct gcc_jit_type gcc_jit_type; | |
/* A gcc_jit_field encapsulates a field within a struct; it is used | |
when creating a struct type (using gcc_jit_context_new_struct_type). | |
Fields cannot be shared between structs. */ | |
typedef struct gcc_jit_field gcc_jit_field; | |
/* A gcc_jit_struct encapsulates a struct type, either one that we have | |
the layout for, or an opaque type. */ | |
typedef struct gcc_jit_struct gcc_jit_struct; | |
/* A gcc_jit_function_type encapsulates a function type. */ | |
typedef struct gcc_jit_function_type gcc_jit_function_type; | |
/* A gcc_jit_vector_type encapsulates a vector type. */ | |
typedef struct gcc_jit_vector_type gcc_jit_vector_type; | |
/* A gcc_jit_function encapsulates a function: either one that you're | |
creating yourself, or a reference to one that you're dynamically | |
linking to within the rest of the process. */ | |
typedef struct gcc_jit_function gcc_jit_function; | |
/* A gcc_jit_block encapsulates a "basic block" of statements within a | |
function (i.e. with one entry point and one exit point). | |
Every block within a function must be terminated with a conditional, | |
a branch, or a return. | |
The blocks within a function form a directed graph. | |
The entrypoint to the function is the first block created within | |
it. | |
All of the blocks in a function must be reachable via some path from | |
the first block. | |
It's OK to have more than one "return" from a function (i.e. multiple | |
blocks that terminate by returning). */ | |
typedef struct gcc_jit_block gcc_jit_block; | |
/* A gcc_jit_rvalue is an expression within your code, with some type. */ | |
typedef struct gcc_jit_rvalue gcc_jit_rvalue; | |
/* A gcc_jit_lvalue is a storage location within your code (e.g. a | |
variable, a parameter, etc). It is also a gcc_jit_rvalue; use | |
gcc_jit_lvalue_as_rvalue to cast. */ | |
typedef struct gcc_jit_lvalue gcc_jit_lvalue; | |
/* A gcc_jit_param is a function parameter, used when creating a | |
gcc_jit_function. It is also a gcc_jit_lvalue (and thus also an | |
rvalue); use gcc_jit_param_as_lvalue to convert. */ | |
typedef struct gcc_jit_param gcc_jit_param; | |
/* A gcc_jit_case is for use when building multiway branches via | |
gcc_jit_block_end_with_switch and represents a range of integer | |
values (or an individual integer value) together with an associated | |
destination block. */ | |
typedef struct gcc_jit_case gcc_jit_case; | |
/* A gcc_jit_extended_asm represents an assembly language statement, | |
analogous to an extended "asm" statement in GCC's C front-end: a series | |
of low-level instructions inside a function that convert inputs to | |
outputs. */ | |
typedef struct gcc_jit_extended_asm gcc_jit_extended_asm; | |
/* Acquire a JIT-compilation context. */ | |
gcc_jit_context * | |
gcc_jit_context_acquire (void); | |
/* Release the context. After this call, it's no longer valid to use | |
the ctxt. */ | |
void | |
gcc_jit_context_release (gcc_jit_context *ctxt); | |
/* Options present in the initial release of libgccjit. | |
These were handled using enums. */ | |
/* Options taking string values. */ | |
enum gcc_jit_str_option | |
{ | |
/* The name of the program, for use as a prefix when printing error | |
messages to stderr. If NULL, or default, "libgccjit.so" is used. */ | |
GCC_JIT_STR_OPTION_PROGNAME, | |
GCC_JIT_NUM_STR_OPTIONS | |
}; | |
/* Options taking int values. */ | |
enum gcc_jit_int_option | |
{ | |
/* How much to optimize the code. | |
Valid values are 0-3, corresponding to GCC's command-line options | |
-O0 through -O3. | |
The default value is 0 (unoptimized). */ | |
GCC_JIT_INT_OPTION_OPTIMIZATION_LEVEL, | |
GCC_JIT_NUM_INT_OPTIONS | |
}; | |
/* Options taking boolean values. | |
These all default to "false". */ | |
enum gcc_jit_bool_option | |
{ | |
/* If true, gcc_jit_context_compile will attempt to do the right | |
thing so that if you attach a debugger to the process, it will | |
be able to inspect variables and step through your code. | |
Note that you can't step through code unless you set up source | |
location information for the code (by creating and passing in | |
gcc_jit_location instances). */ | |
GCC_JIT_BOOL_OPTION_DEBUGINFO, | |
/* If true, gcc_jit_context_compile will dump its initial "tree" | |
representation of your code to stderr (before any | |
optimizations). */ | |
GCC_JIT_BOOL_OPTION_DUMP_INITIAL_TREE, | |
/* If true, gcc_jit_context_compile will dump the "gimple" | |
representation of your code to stderr, before any optimizations | |
are performed. The dump resembles C code. */ | |
GCC_JIT_BOOL_OPTION_DUMP_INITIAL_GIMPLE, | |
/* If true, gcc_jit_context_compile will dump the final | |
generated code to stderr, in the form of assembly language. */ | |
GCC_JIT_BOOL_OPTION_DUMP_GENERATED_CODE, | |
/* If true, gcc_jit_context_compile will print information to stderr | |
on the actions it is performing, followed by a profile showing | |
the time taken and memory usage of each phase. | |
*/ | |
GCC_JIT_BOOL_OPTION_DUMP_SUMMARY, | |
/* If true, gcc_jit_context_compile will dump copious | |
amount of information on what it's doing to various | |
files within a temporary directory. Use | |
GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES (see below) to | |
see the results. The files are intended to be human-readable, | |
but the exact files and their formats are subject to change. | |
*/ | |
GCC_JIT_BOOL_OPTION_DUMP_EVERYTHING, | |
/* If true, libgccjit will aggressively run its garbage collector, to | |
shake out bugs (greatly slowing down the compile). This is likely | |
to only be of interest to developers *of* the library. It is | |
used when running the selftest suite. */ | |
GCC_JIT_BOOL_OPTION_SELFCHECK_GC, | |
/* If true, gcc_jit_context_release will not clean up | |
intermediate files written to the filesystem, and will display | |
their location on stderr. */ | |
GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES, | |
GCC_JIT_NUM_BOOL_OPTIONS | |
}; | |
/* Set a string option on the given context. | |
The context takes a copy of the string, so the | |
(const char *) buffer is not needed anymore after the call | |
returns. */ | |
void | |
gcc_jit_context_set_str_option (gcc_jit_context *ctxt, | |
enum gcc_jit_str_option opt, | |
const char *value); | |
/* Set an int option on the given context. */ | |
void | |
gcc_jit_context_set_int_option (gcc_jit_context *ctxt, | |
enum gcc_jit_int_option opt, | |
int value); | |
/* Set a boolean option on the given context. | |
Zero is "false" (the default), non-zero is "true". */ | |
void | |
gcc_jit_context_set_bool_option (gcc_jit_context *ctxt, | |
enum gcc_jit_bool_option opt, | |
int value); | |
/* Options added after the initial release of libgccjit. | |
These are handled by providing an entrypoint per option, | |
rather than by extending the enum gcc_jit_*_option, | |
so that client code that use these new options can be identified | |
from binary metadata. */ | |
/* By default, libgccjit will issue an error about unreachable blocks | |
within a function. | |
This option can be used to disable that error. | |
This entrypoint was added in LIBGCCJIT_ABI_2; you can test for | |
its presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_set_bool_allow_unreachable_blocks | |
*/ | |
void | |
gcc_jit_context_set_bool_allow_unreachable_blocks (gcc_jit_context *ctxt, | |
int bool_value); | |
/* Pre-canned feature macro to indicate the presence of | |
gcc_jit_context_set_bool_allow_unreachable_blocks. This can be | |
tested for with #ifdef. */ | |
////#define LIBGCCJIT_HAVE_gcc_jit_context_set_bool_allow_unreachable_blocks | |
/* By default, libgccjit will print errors to stderr. | |
This option can be used to disable the printing. | |
This entrypoint was added in LIBGCCJIT_ABI_23; you can test for | |
its presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_set_bool_print_errors_to_stderr | |
*/ | |
void | |
gcc_jit_context_set_bool_print_errors_to_stderr (gcc_jit_context *ctxt, | |
int enabled); | |
/* Pre-canned feature macro to indicate the presence of | |
gcc_jit_context_set_bool_print_errors_to_stderr. This can be | |
tested for with #ifdef. */ | |
////#define LIBGCCJIT_HAVE_gcc_jit_context_set_bool_print_errors_to_stderr | |
/* Implementation detail: | |
libgccjit internally generates assembler, and uses "driver" code | |
for converting it to other formats (e.g. shared libraries). | |
By default, libgccjit will use an embedded copy of the driver | |
code. | |
This option can be used to instead invoke an external driver executable | |
as a subprocess. | |
This entrypoint was added in LIBGCCJIT_ABI_5; you can test for | |
its presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_set_bool_use_external_driver | |
*/ | |
void | |
gcc_jit_context_set_bool_use_external_driver (gcc_jit_context *ctxt, | |
int bool_value); | |
/* Pre-canned feature macro to indicate the presence of | |
gcc_jit_context_set_bool_use_external_driver. This can be | |
tested for with #ifdef. */ | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_set_bool_use_external_driver | |
/* Add an arbitrary gcc command-line option to the context. | |
The context takes a copy of the string, so the | |
(const char *) optname is not needed anymore after the call | |
returns. | |
Note that only some options are likely to be meaningful; there is no | |
"frontend" within libgccjit, so typically only those affecting | |
optimization and code-generation are likely to be useful. | |
This entrypoint was added in LIBGCCJIT_ABI_1; you can test for | |
its presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option | |
*/ | |
void | |
gcc_jit_context_add_command_line_option (gcc_jit_context *ctxt, | |
const char *optname); | |
/* Pre-canned feature-test macro for detecting the presence of | |
gcc_jit_context_add_command_line_option within libgccjit.h. */ | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option | |
/* Add an arbitrary gcc driver option to the context. | |
The context takes a copy of the string, so the | |
(const char *) optname is not needed anymore after the call | |
returns. | |
Note that only some options are likely to be meaningful; there is no | |
"frontend" within libgccjit, so typically only those affecting | |
assembler and linker are likely to be useful. | |
This entrypoint was added in LIBGCCJIT_ABI_11; you can test for | |
its presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_add_driver_option | |
*/ | |
void | |
gcc_jit_context_add_driver_option (gcc_jit_context *ctxt, | |
const char *optname); | |
/* Pre-canned feature-test macro for detecting the presence of | |
gcc_jit_context_add_driver_option within libgccjit.h. */ | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_add_driver_option | |
/* Compile the context to in-memory machine code. | |
This can be called more that once on a given context, | |
although any errors that occur will block further compilation. */ | |
gcc_jit_result * | |
gcc_jit_context_compile (gcc_jit_context *ctxt); | |
/* Kinds of ahead-of-time compilation, for use with | |
gcc_jit_context_compile_to_file. */ | |
enum gcc_jit_output_kind | |
{ | |
/* Compile the context to an assembler file. */ | |
GCC_JIT_OUTPUT_KIND_ASSEMBLER, | |
/* Compile the context to an object file. */ | |
GCC_JIT_OUTPUT_KIND_OBJECT_FILE, | |
/* Compile the context to a dynamic library. */ | |
GCC_JIT_OUTPUT_KIND_DYNAMIC_LIBRARY, | |
/* Compile the context to an executable. */ | |
GCC_JIT_OUTPUT_KIND_EXECUTABLE | |
}; | |
/* Compile the context to a file of the given kind. | |
This can be called more that once on a given context, | |
although any errors that occur will block further compilation. */ | |
void | |
gcc_jit_context_compile_to_file (gcc_jit_context *ctxt, | |
enum gcc_jit_output_kind output_kind, | |
const char *output_path); | |
/* To help with debugging: dump a C-like representation to the given path, | |
describing what's been set up on the context. | |
If "update_locations" is true, then also set up gcc_jit_location | |
information throughout the context, pointing at the dump file as if it | |
were a source file. This may be of use in conjunction with | |
GCC_JIT_BOOL_OPTION_DEBUGINFO to allow stepping through the code in a | |
debugger. */ | |
void | |
gcc_jit_context_dump_to_file (gcc_jit_context *ctxt, const char *path, int update_locations); | |
/* To help with debugging; enable ongoing logging of the context's | |
activity to the given FILE. | |
The caller remains responsible for closing "logfile". | |
Params "flags" and "verbosity" are reserved for future use, and | |
must both be 0 for now. */ | |
void | |
gcc_jit_context_set_logfile (gcc_jit_context *ctxt, FILE *logfile, int flags, int verbosity); | |
/* To be called after any API call, this gives the first error message | |
that occurred on the context. | |
The returned string is valid for the rest of the lifetime of the | |
context. | |
If no errors occurred, this will be NULL. */ | |
const char * | |
gcc_jit_context_get_first_error (gcc_jit_context *ctxt); | |
/* To be called after any API call, this gives the last error message | |
that occurred on the context. | |
If no errors occurred, this will be NULL. | |
If non-NULL, the returned string is only guaranteed to be valid until | |
the next call to libgccjit relating to this context. */ | |
const char * | |
gcc_jit_context_get_last_error (gcc_jit_context *ctxt); | |
/* Locate a given function within the built machine code. | |
This will need to be cast to a function pointer of the | |
correct type before it can be called. */ | |
void * | |
gcc_jit_result_get_code (gcc_jit_result *result, | |
const char *funcname); | |
/* Locate a given global within the built machine code. | |
It must have been created using GCC_JIT_GLOBAL_EXPORTED. | |
This is a ptr to the global, so e.g. for an int this is an int *. */ | |
void * | |
gcc_jit_result_get_global (gcc_jit_result *result, | |
const char *name); | |
/* Once we're done with the code, this unloads the built .so file. | |
This cleans up the result; after calling this, it's no longer | |
valid to use the result. */ | |
void | |
gcc_jit_result_release (gcc_jit_result *result); | |
/********************************************************************** | |
Functions for creating "contextual" objects. | |
All objects created by these functions share the lifetime of the context | |
they are created within, and are automatically cleaned up for you when | |
you call gcc_jit_context_release on the context. | |
Note that this means you can't use references to them after you've | |
released their context. | |
All (const char *) string arguments passed to these functions are | |
copied, so you don't need to keep them around. | |
You create code by adding a sequence of statements to blocks. | |
**********************************************************************/ | |
/********************************************************************** | |
The base class of "contextual" object. | |
**********************************************************************/ | |
/* Which context is "obj" within? */ | |
gcc_jit_context * | |
gcc_jit_object_get_context (gcc_jit_object *obj); | |
/* Get a human-readable description of this object. | |
The string buffer is created the first time this is called on a given | |
object, and persists until the object's context is released. */ | |
const char * | |
gcc_jit_object_get_debug_string (gcc_jit_object *obj); | |
/********************************************************************** | |
Debugging information. | |
**********************************************************************/ | |
/* Creating source code locations for use by the debugger. | |
Line and column numbers are 1-based. */ | |
gcc_jit_location * | |
gcc_jit_context_new_location (gcc_jit_context *ctxt, | |
const char *filename, | |
int line, | |
int column); | |
/* Upcasting from location to object. */ | |
gcc_jit_object * | |
gcc_jit_location_as_object (gcc_jit_location *loc); | |
/********************************************************************** | |
Types. | |
**********************************************************************/ | |
/* Upcasting from type to object. */ | |
gcc_jit_object * | |
gcc_jit_type_as_object (gcc_jit_type *type); | |
/* Access to specific types. */ | |
enum gcc_jit_types | |
{ | |
/* C's "void" type. */ | |
GCC_JIT_TYPE_VOID, | |
/* "void *". */ | |
GCC_JIT_TYPE_VOID_PTR, | |
/* C++'s bool type; also C99's "_Bool" type, aka "bool" if using | |
stdbool.h. */ | |
GCC_JIT_TYPE_BOOL, | |
/* Various integer types. */ | |
/* C's "char" (of some signedness) and the variants where the | |
signedness is specified. */ | |
GCC_JIT_TYPE_CHAR, | |
GCC_JIT_TYPE_SIGNED_CHAR, | |
GCC_JIT_TYPE_UNSIGNED_CHAR, | |
/* C's "short" and "unsigned short". */ | |
GCC_JIT_TYPE_SHORT, /* signed */ | |
GCC_JIT_TYPE_UNSIGNED_SHORT, | |
/* C's "int" and "unsigned int". */ | |
GCC_JIT_TYPE_INT, /* signed */ | |
GCC_JIT_TYPE_UNSIGNED_INT, | |
/* C's "long" and "unsigned long". */ | |
GCC_JIT_TYPE_LONG, /* signed */ | |
GCC_JIT_TYPE_UNSIGNED_LONG, | |
/* C99's "long long" and "unsigned long long". */ | |
GCC_JIT_TYPE_LONG_LONG, /* signed */ | |
GCC_JIT_TYPE_UNSIGNED_LONG_LONG, | |
/* Floating-point types */ | |
GCC_JIT_TYPE_FLOAT, | |
GCC_JIT_TYPE_DOUBLE, | |
GCC_JIT_TYPE_LONG_DOUBLE, | |
/* C type: (const char *). */ | |
GCC_JIT_TYPE_CONST_CHAR_PTR, | |
/* The C "size_t" type. */ | |
GCC_JIT_TYPE_SIZE_T, | |
/* C type: (FILE *) */ | |
GCC_JIT_TYPE_FILE_PTR, | |
/* Complex numbers. */ | |
GCC_JIT_TYPE_COMPLEX_FLOAT, | |
GCC_JIT_TYPE_COMPLEX_DOUBLE, | |
GCC_JIT_TYPE_COMPLEX_LONG_DOUBLE, | |
/* Sized integer types. */ | |
GCC_JIT_TYPE_UINT8_T, | |
GCC_JIT_TYPE_UINT16_T, | |
GCC_JIT_TYPE_UINT32_T, | |
GCC_JIT_TYPE_UINT64_T, | |
GCC_JIT_TYPE_UINT128_T, | |
GCC_JIT_TYPE_INT8_T, | |
GCC_JIT_TYPE_INT16_T, | |
GCC_JIT_TYPE_INT32_T, | |
GCC_JIT_TYPE_INT64_T, | |
GCC_JIT_TYPE_INT128_T | |
}; | |
gcc_jit_type * | |
gcc_jit_context_get_type (gcc_jit_context *ctxt, | |
enum gcc_jit_types type_); | |
/* Get the integer type of the given size and signedness. */ | |
gcc_jit_type * | |
gcc_jit_context_get_int_type (gcc_jit_context *ctxt, | |
int num_bytes, int is_signed); | |
/* Constructing new types. */ | |
/* Given type "T", get type "T*". */ | |
gcc_jit_type * | |
gcc_jit_type_get_pointer (gcc_jit_type *type); | |
/* Given type "T", get type "const T". */ | |
gcc_jit_type * | |
gcc_jit_type_get_const (gcc_jit_type *type); | |
/* Given type "T", get type "volatile T". */ | |
gcc_jit_type * | |
gcc_jit_type_get_volatile (gcc_jit_type *type); | |
//#define LIBGCCJIT_HAVE_SIZED_INTEGERS | |
/* Given types LTYPE and RTYPE, return non-zero if they are compatible. | |
This API entrypoint was added in LIBGCCJIT_ABI_20; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_SIZED_INTEGERS */ | |
int | |
gcc_jit_compatible_types (gcc_jit_type *ltype, | |
gcc_jit_type *rtype); | |
/* Given type "T", get its size. | |
This API entrypoint was added in LIBGCCJIT_ABI_20; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_SIZED_INTEGERS */ | |
ssize_t | |
gcc_jit_type_get_size (gcc_jit_type *type); | |
/* Given type "T", get type "T[N]" (for a constant N). */ | |
gcc_jit_type * | |
gcc_jit_context_new_array_type (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *element_type, | |
int num_elements); | |
/* Struct-handling. */ | |
/* Create a field, for use within a struct or union. */ | |
gcc_jit_field * | |
gcc_jit_context_new_field (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
const char *name); | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_new_bitfield | |
/* Create a bit field, for use within a struct or union. | |
This API entrypoint was added in LIBGCCJIT_ABI_12; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_new_bitfield | |
*/ | |
gcc_jit_field * | |
gcc_jit_context_new_bitfield (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
int width, | |
const char *name); | |
/* Upcasting from field to object. */ | |
gcc_jit_object * | |
gcc_jit_field_as_object (gcc_jit_field *field); | |
/* Create a struct type from an array of fields. */ | |
gcc_jit_struct * | |
gcc_jit_context_new_struct_type (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
const char *name, | |
int num_fields, | |
gcc_jit_field **fields); | |
/* Create an opaque struct type. */ | |
gcc_jit_struct * | |
gcc_jit_context_new_opaque_struct (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
const char *name); | |
/* Upcast a struct to a type. */ | |
gcc_jit_type * | |
gcc_jit_struct_as_type (gcc_jit_struct *struct_type); | |
/* Populating the fields of a formerly-opaque struct type. | |
This can only be called once on a given struct type. */ | |
void | |
gcc_jit_struct_set_fields (gcc_jit_struct *struct_type, | |
gcc_jit_location *loc, | |
int num_fields, | |
gcc_jit_field **fields); | |
/* Get a field by index. */ | |
gcc_jit_field * | |
gcc_jit_struct_get_field (gcc_jit_struct *struct_type, | |
size_t index); | |
/* Get the number of fields. */ | |
size_t | |
gcc_jit_struct_get_field_count (gcc_jit_struct *struct_type); | |
/* Unions work similarly to structs. */ | |
gcc_jit_type * | |
gcc_jit_context_new_union_type (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
const char *name, | |
int num_fields, | |
gcc_jit_field **fields); | |
/* Function pointers. */ | |
gcc_jit_type * | |
gcc_jit_context_new_function_ptr_type (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *return_type, | |
int num_params, | |
gcc_jit_type **param_types, | |
int is_variadic); | |
/********************************************************************** | |
Constructing functions. | |
**********************************************************************/ | |
/* Create a function param. */ | |
gcc_jit_param * | |
gcc_jit_context_new_param (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
const char *name); | |
/* Upcasting from param to object. */ | |
gcc_jit_object * | |
gcc_jit_param_as_object (gcc_jit_param *param); | |
/* Upcasting from param to lvalue. */ | |
gcc_jit_lvalue * | |
gcc_jit_param_as_lvalue (gcc_jit_param *param); | |
/* Upcasting from param to rvalue. */ | |
gcc_jit_rvalue * | |
gcc_jit_param_as_rvalue (gcc_jit_param *param); | |
/* Kinds of function. */ | |
enum gcc_jit_function_kind | |
{ | |
/* Function is defined by the client code and visible | |
by name outside of the JIT. */ | |
GCC_JIT_FUNCTION_EXPORTED, | |
/* Function is defined by the client code, but is invisible | |
outside of the JIT. Analogous to a "static" function. */ | |
GCC_JIT_FUNCTION_INTERNAL, | |
/* Function is not defined by the client code; we're merely | |
referring to it. Analogous to using an "extern" function from a | |
header file. */ | |
GCC_JIT_FUNCTION_IMPORTED, | |
/* Function is only ever inlined into other functions, and is | |
invisible outside of the JIT. | |
Analogous to prefixing with "inline" and adding | |
__attribute__((always_inline)). | |
Inlining will only occur when the optimization level is | |
above 0; when optimization is off, this is essentially the | |
same as GCC_JIT_FUNCTION_INTERNAL. */ | |
GCC_JIT_FUNCTION_ALWAYS_INLINE | |
}; | |
/* Thread local storage model. */ | |
enum gcc_jit_tls_model | |
{ | |
GCC_JIT_TLS_MODEL_NONE, | |
GCC_JIT_TLS_MODEL_GLOBAL_DYNAMIC, | |
GCC_JIT_TLS_MODEL_LOCAL_DYNAMIC, | |
GCC_JIT_TLS_MODEL_INITIAL_EXEC, | |
GCC_JIT_TLS_MODEL_LOCAL_EXEC, | |
}; | |
/* Create a function. */ | |
gcc_jit_function * | |
gcc_jit_context_new_function (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
enum gcc_jit_function_kind kind, | |
gcc_jit_type *return_type, | |
const char *name, | |
int num_params, | |
gcc_jit_param **params, | |
int is_variadic); | |
/* Create a reference to a builtin function (sometimes called | |
intrinsic functions). */ | |
gcc_jit_function * | |
gcc_jit_context_get_builtin_function (gcc_jit_context *ctxt, | |
const char *name); | |
/* Upcasting from function to object. */ | |
gcc_jit_object * | |
gcc_jit_function_as_object (gcc_jit_function *func); | |
/* Get a specific param of a function by index. */ | |
gcc_jit_param * | |
gcc_jit_function_get_param (gcc_jit_function *func, int index); | |
/* Emit the function in graphviz format. */ | |
void | |
gcc_jit_function_dump_to_dot (gcc_jit_function *func, | |
const char *path); | |
/* Create a block. | |
The name can be NULL, or you can give it a meaningful name, which | |
may show up in dumps of the internal representation, and in error | |
messages. */ | |
gcc_jit_block * | |
gcc_jit_function_new_block (gcc_jit_function *func, | |
const char *name); | |
/* Upcasting from block to object. */ | |
gcc_jit_object * | |
gcc_jit_block_as_object (gcc_jit_block *block); | |
/* Which function is this block within? */ | |
gcc_jit_function * | |
gcc_jit_block_get_function (gcc_jit_block *block); | |
/********************************************************************** | |
lvalues, rvalues and expressions. | |
**********************************************************************/ | |
enum gcc_jit_global_kind | |
{ | |
/* Global is defined by the client code and visible | |
by name outside of this JIT context via gcc_jit_result_get_global. */ | |
GCC_JIT_GLOBAL_EXPORTED, | |
/* Global is defined by the client code, but is invisible | |
outside of this JIT context. Analogous to a "static" global. */ | |
GCC_JIT_GLOBAL_INTERNAL, | |
/* Global is not defined by the client code; we're merely | |
referring to it. Analogous to using an "extern" global from a | |
header file. */ | |
GCC_JIT_GLOBAL_IMPORTED | |
}; | |
gcc_jit_lvalue * | |
gcc_jit_context_new_global (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
enum gcc_jit_global_kind kind, | |
gcc_jit_type *type, | |
const char *name); | |
//#define LIBGCCJIT_HAVE_CTORS | |
/* Create a constructor for a struct as an rvalue. | |
Returns NULL on error. The two parameter arrays are copied and | |
do not have to outlive the context. | |
`type` specifies what the constructor will build and has to be | |
a struct. | |
`num_values` specifies the number of elements in `values`. | |
`fields` need to have the same length as `values`, or be NULL. | |
If `fields` is null, the values are applied in definition order. | |
Otherwise, each field in `fields` specifies which field in the struct to | |
set to the corresponding value in `values`. `fields` and `values` | |
are paired by index. | |
Each value has to have the same unqualified type as the field | |
it is applied to. | |
A NULL value element in `values` is a shorthand for zero initialization | |
of the corresponding field. | |
The fields in `fields` have to be in definition order, but there | |
can be gaps. Any field in the struct that is not specified in | |
`fields` will be zeroed. | |
The fields in `fields` need to be the same objects that were used | |
to create the struct. | |
If `num_values` is 0, the array parameters will be | |
ignored and zero initialization will be used. | |
The constructor rvalue can be used for assignment to locals. | |
It can be used to initialize global variables with | |
gcc_jit_global_set_initializer_rvalue. It can also be used as a | |
temporary value for function calls and return values. | |
The constructor can contain nested constructors. | |
This entrypoint was added in LIBGCCJIT_ABI_19; you can test for its | |
presence using: | |
#ifdef LIBGCCJIT_HAVE_CTORS | |
*/ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_struct_constructor (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
size_t num_values, | |
gcc_jit_field **fields, | |
gcc_jit_rvalue **values); | |
/* Create a constructor for a union as an rvalue. | |
Returns NULL on error. | |
`type` specifies what the constructor will build and has to be | |
an union. | |
`field` specifies which field to set. If it is NULL, the first | |
field in the union will be set. `field` need to be the same | |
object that were used to create the union. | |
`value` specifies what value to set the corresponding field to. | |
If `value` is NULL, zero initialization will be used. | |
Each value has to have the same unqualified type as the field | |
it is applied to. | |
`field` need to be the same objects that were used | |
to create the union. | |
The constructor rvalue can be used for assignment to locals. | |
It can be used to initialize global variables with | |
gcc_jit_global_set_initializer_rvalue. It can also be used as a | |
temporary value for function calls and return values. | |
The constructor can contain nested constructors. | |
This entrypoint was added in LIBGCCJIT_ABI_19; you can test for its | |
presence using: | |
#ifdef LIBGCCJIT_HAVE_CTORS | |
*/ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_union_constructor (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
gcc_jit_field *field, | |
gcc_jit_rvalue *value); | |
/* Create a constructor for an array as an rvalue. | |
Returns NULL on error. `values` are copied and | |
do not have to outlive the context. | |
`type` specifies what the constructor will build and has to be | |
an array. | |
`num_values` specifies the number of elements in `values` and | |
it can't have more elements than the array type. | |
Each value in `values` sets the corresponding value in the array. | |
If the array type itself has more elements than `values`, the | |
left-over elements will be zeroed. | |
Each value in `values` need to be the same unqualified type as the | |
array type's element type. | |
If `num_values` is 0, the `values` parameter will be | |
ignored and zero initialization will be used. | |
Note that a string literal rvalue can't be used to construct a char | |
array. It needs one rvalue for each char. | |
This entrypoint was added in LIBGCCJIT_ABI_19; you can test for its | |
presence using: | |
#ifdef LIBGCCJIT_HAVE_CTORS | |
*/ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_array_constructor (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
size_t num_values, | |
gcc_jit_rvalue **values); | |
/* Set the initial value of a global of any type with an rvalue. | |
The rvalue needs to be a constant expression, e.g. no function calls. | |
The global can't have the 'kind' GCC_JIT_GLOBAL_IMPORTED. | |
Use together with gcc_jit_context_new_constructor () to | |
initialize structs, unions and arrays. | |
On success, returns the 'global' parameter unchanged. Otherwise, NULL. | |
'values' is copied and does not have to outlive the context. | |
This entrypoint was added in LIBGCCJIT_ABI_19; you can test for its | |
presence using: | |
#ifdef LIBGCCJIT_HAVE_CTORS | |
*/ | |
gcc_jit_lvalue * | |
gcc_jit_global_set_initializer_rvalue (gcc_jit_lvalue *global, | |
gcc_jit_rvalue *init_value); | |
//#define LIBGCCJIT_HAVE_gcc_jit_global_set_initializer | |
/* Set an initial value for a global, which must be an array of | |
integral type. Return the global itself. | |
This API entrypoint was added in LIBGCCJIT_ABI_14; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_global_set_initializer | |
*/ | |
gcc_jit_lvalue * | |
gcc_jit_global_set_initializer (gcc_jit_lvalue *global, | |
const void *blob, | |
size_t num_bytes); | |
/* Upcasting. */ | |
gcc_jit_object * | |
gcc_jit_lvalue_as_object (gcc_jit_lvalue *lvalue); | |
gcc_jit_rvalue * | |
gcc_jit_lvalue_as_rvalue (gcc_jit_lvalue *lvalue); | |
gcc_jit_object * | |
gcc_jit_rvalue_as_object (gcc_jit_rvalue *rvalue); | |
gcc_jit_type * | |
gcc_jit_rvalue_get_type (gcc_jit_rvalue *rvalue); | |
/* Integer constants. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_rvalue_from_int (gcc_jit_context *ctxt, | |
gcc_jit_type *numeric_type, | |
int value); | |
gcc_jit_rvalue * | |
gcc_jit_context_new_rvalue_from_long (gcc_jit_context *ctxt, | |
gcc_jit_type *numeric_type, | |
long value); | |
gcc_jit_rvalue * | |
gcc_jit_context_zero (gcc_jit_context *ctxt, | |
gcc_jit_type *numeric_type); | |
gcc_jit_rvalue * | |
gcc_jit_context_one (gcc_jit_context *ctxt, | |
gcc_jit_type *numeric_type); | |
/* Floating-point constants. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_rvalue_from_double (gcc_jit_context *ctxt, | |
gcc_jit_type *numeric_type, | |
double value); | |
/* Pointers. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_rvalue_from_ptr (gcc_jit_context *ctxt, | |
gcc_jit_type *pointer_type, | |
void *value); | |
gcc_jit_rvalue * | |
gcc_jit_context_null (gcc_jit_context *ctxt, | |
gcc_jit_type *pointer_type); | |
/* String literals. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_string_literal (gcc_jit_context *ctxt, | |
const char *value); | |
enum gcc_jit_unary_op | |
{ | |
/* Negate an arithmetic value; analogous to: | |
-(EXPR) | |
in C. */ | |
GCC_JIT_UNARY_OP_MINUS, | |
/* Bitwise negation of an integer value (one's complement); analogous | |
to: | |
~(EXPR) | |
in C. */ | |
GCC_JIT_UNARY_OP_BITWISE_NEGATE, | |
/* Logical negation of an arithmetic or pointer value; analogous to: | |
!(EXPR) | |
in C. */ | |
GCC_JIT_UNARY_OP_LOGICAL_NEGATE, | |
/* Absolute value of an arithmetic expression; analogous to: | |
abs (EXPR) | |
in C. */ | |
GCC_JIT_UNARY_OP_ABS | |
}; | |
gcc_jit_rvalue * | |
gcc_jit_context_new_unary_op (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
enum gcc_jit_unary_op op, | |
gcc_jit_type *result_type, | |
gcc_jit_rvalue *rvalue); | |
enum gcc_jit_binary_op | |
{ | |
/* Addition of arithmetic values; analogous to: | |
(EXPR_A) + (EXPR_B) | |
in C. | |
For pointer addition, use gcc_jit_context_new_array_access. */ | |
GCC_JIT_BINARY_OP_PLUS, | |
/* Subtraction of arithmetic values; analogous to: | |
(EXPR_A) - (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_MINUS, | |
/* Multiplication of a pair of arithmetic values; analogous to: | |
(EXPR_A) * (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_MULT, | |
/* Quotient of division of arithmetic values; analogous to: | |
(EXPR_A) / (EXPR_B) | |
in C. | |
The result type affects the kind of division: if the result type is | |
integer-based, then the result is truncated towards zero, whereas | |
a floating-point result type indicates floating-point division. */ | |
GCC_JIT_BINARY_OP_DIVIDE, | |
/* Remainder of division of arithmetic values; analogous to: | |
(EXPR_A) % (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_MODULO, | |
/* Bitwise AND; analogous to: | |
(EXPR_A) & (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_BITWISE_AND, | |
/* Bitwise exclusive OR; analogous to: | |
(EXPR_A) ^ (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_BITWISE_XOR, | |
/* Bitwise inclusive OR; analogous to: | |
(EXPR_A) | (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_BITWISE_OR, | |
/* Logical AND; analogous to: | |
(EXPR_A) && (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_LOGICAL_AND, | |
/* Logical OR; analogous to: | |
(EXPR_A) || (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_LOGICAL_OR, | |
/* Left shift; analogous to: | |
(EXPR_A) << (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_LSHIFT, | |
/* Right shift; analogous to: | |
(EXPR_A) >> (EXPR_B) | |
in C. */ | |
GCC_JIT_BINARY_OP_RSHIFT | |
}; | |
gcc_jit_rvalue * | |
gcc_jit_context_new_binary_op (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
enum gcc_jit_binary_op op, | |
gcc_jit_type *result_type, | |
gcc_jit_rvalue *a, gcc_jit_rvalue *b); | |
/* (Comparisons are treated as separate from "binary_op" to save | |
you having to specify the result_type). */ | |
enum gcc_jit_comparison | |
{ | |
/* (EXPR_A) == (EXPR_B). */ | |
GCC_JIT_COMPARISON_EQ, | |
/* (EXPR_A) != (EXPR_B). */ | |
GCC_JIT_COMPARISON_NE, | |
/* (EXPR_A) < (EXPR_B). */ | |
GCC_JIT_COMPARISON_LT, | |
/* (EXPR_A) <=(EXPR_B). */ | |
GCC_JIT_COMPARISON_LE, | |
/* (EXPR_A) > (EXPR_B). */ | |
GCC_JIT_COMPARISON_GT, | |
/* (EXPR_A) >= (EXPR_B). */ | |
GCC_JIT_COMPARISON_GE | |
}; | |
gcc_jit_rvalue * | |
gcc_jit_context_new_comparison (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
enum gcc_jit_comparison op, | |
gcc_jit_rvalue *a, gcc_jit_rvalue *b); | |
/* Function calls. */ | |
/* Call of a specific function. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_call (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_function *func, | |
int numargs , gcc_jit_rvalue **args); | |
/* Call through a function pointer. */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_call_through_ptr (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *fn_ptr, | |
int numargs, gcc_jit_rvalue **args); | |
/* Type-coercion. | |
Currently only a limited set of conversions are possible: | |
int <-> float | |
int <-> bool */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_cast (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *rvalue, | |
gcc_jit_type *type); | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_new_bitcast | |
/* Reinterpret a value as another type. | |
The types must be of the same size. | |
This API entrypoint was added in LIBGCCJIT_ABI_21; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_new_bitcast */ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_bitcast (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *rvalue, | |
gcc_jit_type *type); | |
//#define LIBGCCJIT_HAVE_ALIGNMENT | |
/* Set the alignment of a variable. | |
This API entrypoint was added in LIBGCCJIT_ABI_24; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_ALIGNMENT */ | |
void | |
gcc_jit_lvalue_set_alignment (gcc_jit_lvalue *lvalue, | |
unsigned bytes); | |
/* Get the alignment of a variable. | |
This API entrypoint was added in LIBGCCJIT_ABI_24; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_ALIGNMENT */ | |
unsigned | |
gcc_jit_lvalue_get_alignment (gcc_jit_lvalue *lvalue); | |
gcc_jit_lvalue * | |
gcc_jit_context_new_array_access (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *ptr, | |
gcc_jit_rvalue *index); | |
/* Field access is provided separately for both lvalues and rvalues. */ | |
/* Accessing a field of an lvalue of struct type, analogous to: | |
(EXPR).field = ...; | |
in C. */ | |
gcc_jit_lvalue * | |
gcc_jit_lvalue_access_field (gcc_jit_lvalue *struct_or_union, | |
gcc_jit_location *loc, | |
gcc_jit_field *field); | |
/* Accessing a field of an rvalue of struct type, analogous to: | |
(EXPR).field | |
in C. */ | |
gcc_jit_rvalue * | |
gcc_jit_rvalue_access_field (gcc_jit_rvalue *struct_or_union, | |
gcc_jit_location *loc, | |
gcc_jit_field *field); | |
/* Accessing a field of an rvalue of pointer type, analogous to: | |
(EXPR)->field | |
in C, itself equivalent to (*EXPR).FIELD */ | |
gcc_jit_lvalue * | |
gcc_jit_rvalue_dereference_field (gcc_jit_rvalue *ptr, | |
gcc_jit_location *loc, | |
gcc_jit_field *field); | |
/* Dereferencing a pointer; analogous to: | |
*(EXPR) | |
*/ | |
gcc_jit_lvalue * | |
gcc_jit_rvalue_dereference (gcc_jit_rvalue *rvalue, | |
gcc_jit_location *loc); | |
/* Taking the address of an lvalue; analogous to: | |
&(EXPR) | |
in C. */ | |
gcc_jit_rvalue * | |
gcc_jit_lvalue_get_address (gcc_jit_lvalue *lvalue, | |
gcc_jit_location *loc); | |
//#define LIBGCCJIT_HAVE_gcc_jit_lvalue_set_tls_model | |
/* Set the thread-local storage model of a global variable | |
This API entrypoint was added in LIBGCCJIT_ABI_17; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_lvalue_set_tls_model */ | |
void | |
gcc_jit_lvalue_set_tls_model (gcc_jit_lvalue *lvalue, | |
enum gcc_jit_tls_model model); | |
//#define LIBGCCJIT_HAVE_gcc_jit_lvalue_set_link_section | |
/* Set the link section of a global variable; analogous to: | |
__attribute__((section(".section_name"))) | |
in C. | |
This API entrypoint was added in LIBGCCJIT_ABI_18; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_lvalue_set_link_section | |
*/ | |
void | |
gcc_jit_lvalue_set_link_section (gcc_jit_lvalue *lvalue, | |
const char *section_name); | |
//#define LIBGCCJIT_HAVE_gcc_jit_lvalue_set_register_name | |
/* Make this variable a register variable and set its register name. | |
This API entrypoint was added in LIBGCCJIT_ABI_22; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_lvalue_set_register_name | |
*/ | |
void | |
gcc_jit_lvalue_set_register_name (gcc_jit_lvalue *lvalue, | |
const char *reg_name); | |
gcc_jit_lvalue * | |
gcc_jit_function_new_local (gcc_jit_function *func, | |
gcc_jit_location *loc, | |
gcc_jit_type *type, | |
const char *name); | |
/********************************************************************** | |
Statement-creation. | |
**********************************************************************/ | |
/* Add evaluation of an rvalue, discarding the result | |
(e.g. a function call that "returns" void). | |
This is equivalent to this C code: | |
(void)expression; | |
*/ | |
void | |
gcc_jit_block_add_eval (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *rvalue); | |
/* Add evaluation of an rvalue, assigning the result to the given | |
lvalue. | |
This is roughly equivalent to this C code: | |
lvalue = rvalue; | |
*/ | |
void | |
gcc_jit_block_add_assignment (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_lvalue *lvalue, | |
gcc_jit_rvalue *rvalue); | |
/* Add evaluation of an rvalue, using the result to modify an | |
lvalue. | |
This is analogous to "+=" and friends: | |
lvalue += rvalue; | |
lvalue *= rvalue; | |
lvalue /= rvalue; | |
etc */ | |
void | |
gcc_jit_block_add_assignment_op (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_lvalue *lvalue, | |
enum gcc_jit_binary_op op, | |
gcc_jit_rvalue *rvalue); | |
/* Add a no-op textual comment to the internal representation of the | |
code. It will be optimized away, but will be visible in the dumps | |
seen via | |
GCC_JIT_BOOL_OPTION_DUMP_INITIAL_TREE | |
and | |
GCC_JIT_BOOL_OPTION_DUMP_INITIAL_GIMPLE, | |
and thus may be of use when debugging how your project's internal | |
representation gets converted to the libgccjit IR. */ | |
void | |
gcc_jit_block_add_comment (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
const char *text); | |
/* Terminate a block by adding evaluation of an rvalue, branching on the | |
result to the appropriate successor block. | |
This is roughly equivalent to this C code: | |
if (boolval) | |
goto on_true; | |
else | |
goto on_false; | |
block, boolval, on_true, and on_false must be non-NULL. */ | |
void | |
gcc_jit_block_end_with_conditional (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *boolval, | |
gcc_jit_block *on_true, | |
gcc_jit_block *on_false); | |
/* Terminate a block by adding a jump to the given target block. | |
This is roughly equivalent to this C code: | |
goto target; | |
*/ | |
void | |
gcc_jit_block_end_with_jump (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_block *target); | |
/* Terminate a block by adding evaluation of an rvalue, returning the value. | |
This is roughly equivalent to this C code: | |
return expression; | |
*/ | |
void | |
gcc_jit_block_end_with_return (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *rvalue); | |
/* Terminate a block by adding a valueless return, for use within a function | |
with "void" return type. | |
This is equivalent to this C code: | |
return; | |
*/ | |
void | |
gcc_jit_block_end_with_void_return (gcc_jit_block *block, | |
gcc_jit_location *loc); | |
/* Create a new gcc_jit_case instance for use in a switch statement. | |
min_value and max_value must be constants of integer type. | |
This API entrypoint was added in LIBGCCJIT_ABI_3; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_SWITCH_STATEMENTS | |
*/ | |
gcc_jit_case * | |
gcc_jit_context_new_case (gcc_jit_context *ctxt, | |
gcc_jit_rvalue *min_value, | |
gcc_jit_rvalue *max_value, | |
gcc_jit_block *dest_block); | |
/* Upcasting from case to object. | |
This API entrypoint was added in LIBGCCJIT_ABI_3; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_SWITCH_STATEMENTS | |
*/ | |
gcc_jit_object * | |
gcc_jit_case_as_object (gcc_jit_case *case_); | |
/* Terminate a block by adding evalation of an rvalue, then performing | |
a multiway branch. | |
This is roughly equivalent to this C code: | |
switch (expr) | |
{ | |
default: | |
goto default_block; | |
case C0.min_value ... C0.max_value: | |
goto C0.dest_block; | |
case C1.min_value ... C1.max_value: | |
goto C1.dest_block; | |
...etc... | |
case C[N - 1].min_value ... C[N - 1].max_value: | |
goto C[N - 1].dest_block; | |
} | |
block, expr, default_block and cases must all be non-NULL. | |
expr must be of the same integer type as all of the min_value | |
and max_value within the cases. | |
num_cases must be >= 0. | |
The ranges of the cases must not overlap (or have duplicate | |
values). | |
This API entrypoint was added in LIBGCCJIT_ABI_3; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_SWITCH_STATEMENTS | |
*/ | |
void | |
gcc_jit_block_end_with_switch (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
gcc_jit_rvalue *expr, | |
gcc_jit_block *default_block, | |
int num_cases, | |
gcc_jit_case **cases); | |
/* Pre-canned feature macro to indicate the presence of | |
gcc_jit_block_end_with_switch, gcc_jit_case_as_object, and | |
gcc_jit_context_new_case. | |
This can be tested for with #ifdef. */ | |
//#define LIBGCCJIT_HAVE_SWITCH_STATEMENTS | |
/********************************************************************** | |
Nested contexts. | |
**********************************************************************/ | |
/* Given an existing JIT context, create a child context. | |
The child inherits a copy of all option-settings from the parent. | |
The child can reference objects created within the parent, but not | |
vice-versa. | |
The lifetime of the child context must be bounded by that of the | |
parent: you should release a child context before releasing the parent | |
context. | |
If you use a function from a parent context within a child context, | |
you have to compile the parent context before you can compile the | |
child context, and the gcc_jit_result of the parent context must | |
outlive the gcc_jit_result of the child context. | |
This allows caching of shared initializations. For example, you could | |
create types and declarations of global functions in a parent context | |
once within a process, and then create child contexts whenever a | |
function or loop becomes hot. Each such child context can be used for | |
JIT-compiling just one function or loop, but can reference types | |
and helper functions created within the parent context. | |
Contexts can be arbitrarily nested, provided the above rules are | |
followed, but it's probably not worth going above 2 or 3 levels, and | |
there will likely be a performance hit for such nesting. */ | |
gcc_jit_context * | |
gcc_jit_context_new_child_context (gcc_jit_context *parent_ctxt); | |
/********************************************************************** | |
Implementation support. | |
**********************************************************************/ | |
/* Write C source code into "path" that can be compiled into a | |
self-contained executable (i.e. with libgccjit as the only dependency). | |
The generated code will attempt to replay the API calls that have been | |
made into the given context. | |
This may be useful when debugging the library or client code, for | |
reducing a complicated recipe for reproducing a bug into a simpler | |
form. | |
Typically you need to supply the option "-Wno-unused-variable" when | |
compiling the generated file (since the result of each API call is | |
assigned to a unique variable within the generated C source, and not | |
all are necessarily then used). */ | |
void | |
gcc_jit_context_dump_reproducer_to_file (gcc_jit_context *ctxt, | |
const char *path); | |
/* Enable the dumping of a specific set of internal state from the | |
compilation, capturing the result in-memory as a buffer. | |
Parameter "dumpname" corresponds to the equivalent gcc command-line | |
option, without the "-fdump-" prefix. | |
For example, to get the equivalent of "-fdump-tree-vrp1", supply | |
"tree-vrp1". | |
The context directly stores the dumpname as a (const char *), so the | |
passed string must outlive the context. | |
gcc_jit_context_compile and gcc_jit_context_to_file | |
will capture the dump as a dynamically-allocated buffer, writing | |
it to ``*out_ptr``. | |
The caller becomes responsible for calling | |
free (*out_ptr) | |
each time that gcc_jit_context_compile or gcc_jit_context_to_file | |
are called. *out_ptr will be written to, either with the address of a | |
buffer, or with NULL if an error occurred. | |
This API entrypoint is likely to be less stable than the others. | |
In particular, both the precise dumpnames, and the format and content | |
of the dumps are subject to change. | |
It exists primarily for writing the library's own test suite. */ | |
void | |
gcc_jit_context_enable_dump (gcc_jit_context *ctxt, | |
const char *dumpname, | |
char **out_ptr); | |
/********************************************************************** | |
Timing support. | |
**********************************************************************/ | |
/* The timing API was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
//#define LIBGCCJIT_HAVE_TIMING_API | |
typedef struct gcc_jit_timer gcc_jit_timer; | |
/* Create a gcc_jit_timer instance, and start timing. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
gcc_jit_timer * | |
gcc_jit_timer_new (void); | |
/* Release a gcc_jit_timer instance. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
void | |
gcc_jit_timer_release (gcc_jit_timer *timer); | |
/* Associate a gcc_jit_timer instance with a context. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
void | |
gcc_jit_context_set_timer (gcc_jit_context *ctxt, | |
gcc_jit_timer *timer); | |
/* Get the timer associated with a context (if any). | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
gcc_jit_timer * | |
gcc_jit_context_get_timer (gcc_jit_context *ctxt); | |
/* Push the given item onto the timing stack. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
void | |
gcc_jit_timer_push (gcc_jit_timer *timer, | |
const char *item_name); | |
/* Pop the top item from the timing stack. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
void | |
gcc_jit_timer_pop (gcc_jit_timer *timer, | |
const char *item_name); | |
/* Print timing information to the given stream about activity since | |
the timer was started. | |
This API entrypoint was added in LIBGCCJIT_ABI_4; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_TIMING_API | |
*/ | |
void | |
gcc_jit_timer_print (gcc_jit_timer *timer, | |
FILE *f_out); | |
//#define LIBGCCJIT_HAVE_gcc_jit_rvalue_set_bool_require_tail_call | |
/* Mark/clear a call as needing tail-call optimization. | |
This API entrypoint was added in LIBGCCJIT_ABI_6; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_rvalue_set_bool_require_tail_call | |
*/ | |
void | |
gcc_jit_rvalue_set_bool_require_tail_call (gcc_jit_rvalue *call, | |
int require_tail_call); | |
//#define LIBGCCJIT_HAVE_gcc_jit_type_get_aligned | |
/* Given type "T", get type: | |
T __attribute__ ((aligned (ALIGNMENT_IN_BYTES))) | |
The alignment must be a power of two. | |
This API entrypoint was added in LIBGCCJIT_ABI_7; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_type_get_aligned | |
*/ | |
gcc_jit_type * | |
gcc_jit_type_get_aligned (gcc_jit_type *type, | |
size_t alignment_in_bytes); | |
//#define LIBGCCJIT_HAVE_gcc_jit_type_get_vector | |
/* Given type "T", get type: | |
T __attribute__ ((vector_size (sizeof(T) * num_units)) | |
T must be integral/floating point; num_units must be a power of two. | |
This API entrypoint was added in LIBGCCJIT_ABI_8; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_type_get_vector | |
*/ | |
gcc_jit_type * | |
gcc_jit_type_get_vector (gcc_jit_type *type, size_t num_units); | |
//#define LIBGCCJIT_HAVE_gcc_jit_function_get_address | |
/* Get the address of a function as an rvalue, of function pointer | |
type. | |
This API entrypoint was added in LIBGCCJIT_ABI_9; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_function_get_address | |
*/ | |
gcc_jit_rvalue * | |
gcc_jit_function_get_address (gcc_jit_function *fn, | |
gcc_jit_location *loc); | |
//#define LIBGCCJIT_HAVE_gcc_jit_context_new_rvalue_from_vector | |
/* Build a vector rvalue from an array of elements. | |
"vec_type" should be a vector type, created using gcc_jit_type_get_vector. | |
This API entrypoint was added in LIBGCCJIT_ABI_10; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_context_new_rvalue_from_vector | |
*/ | |
gcc_jit_rvalue * | |
gcc_jit_context_new_rvalue_from_vector (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
gcc_jit_type *vec_type, | |
size_t num_elements, | |
gcc_jit_rvalue **elements); | |
//#define LIBGCCJIT_HAVE_gcc_jit_version | |
/* Functions to retrieve libgccjit version. | |
Analogous to __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ in C code. | |
These API entrypoints were added in LIBGCCJIT_ABI_13; you can test for their | |
presence using | |
#ifdef LIBGCCJIT_HAVE_gcc_jit_version | |
*/ | |
int | |
gcc_jit_version_major (void); | |
int | |
gcc_jit_version_minor (void); | |
int | |
gcc_jit_version_patchlevel (void); | |
/********************************************************************** | |
Asm support. | |
**********************************************************************/ | |
/* Functions for adding inline assembler code, analogous to GCC's | |
"extended asm" syntax. | |
See https://gcc.gnu.org/onlinedocs/gcc/Using-Assembly-Language-with-C.html | |
These API entrypoints were added in LIBGCCJIT_ABI_15; you can test for their | |
presence using | |
#ifdef LIBGCCJIT_HAVE_ASM_STATEMENTS | |
*/ | |
//#define LIBGCCJIT_HAVE_ASM_STATEMENTS | |
/* Create a gcc_jit_extended_asm for an extended asm statement | |
with no control flow (i.e. without the goto qualifier). | |
The asm_template parameter corresponds to the AssemblerTemplate | |
within C's extended asm syntax. It must be non-NULL. */ | |
gcc_jit_extended_asm * | |
gcc_jit_block_add_extended_asm (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
const char *asm_template); | |
/* Create a gcc_jit_extended_asm for an extended asm statement | |
that may perform jumps, and use it to terminate the given block. | |
This is equivalent to the "goto" qualifier in C's extended asm | |
syntax. */ | |
gcc_jit_extended_asm * | |
gcc_jit_block_end_with_extended_asm_goto (gcc_jit_block *block, | |
gcc_jit_location *loc, | |
const char *asm_template, | |
int num_goto_blocks, | |
gcc_jit_block **goto_blocks, | |
gcc_jit_block *fallthrough_block); | |
/* Upcasting from extended asm to object. */ | |
gcc_jit_object * | |
gcc_jit_extended_asm_as_object (gcc_jit_extended_asm *ext_asm); | |
/* Set whether the gcc_jit_extended_asm has side-effects, equivalent to | |
the "volatile" qualifier in C's extended asm syntax. */ | |
void | |
gcc_jit_extended_asm_set_volatile_flag (gcc_jit_extended_asm *ext_asm, | |
int flag); | |
/* Set the equivalent of the "inline" qualifier in C's extended asm | |
syntax. */ | |
void | |
gcc_jit_extended_asm_set_inline_flag (gcc_jit_extended_asm *ext_asm, | |
int flag); | |
/* Add an output operand to the extended asm statement. | |
"asm_symbolic_name" can be NULL. | |
"constraint" and "dest" must be non-NULL. | |
This function can't be called on an "asm goto" as such instructions | |
can't have outputs */ | |
void | |
gcc_jit_extended_asm_add_output_operand (gcc_jit_extended_asm *ext_asm, | |
const char *asm_symbolic_name, | |
const char *constraint, | |
gcc_jit_lvalue *dest); | |
/* Add an input operand to the extended asm statement. | |
"asm_symbolic_name" can be NULL. | |
"constraint" and "src" must be non-NULL. */ | |
void | |
gcc_jit_extended_asm_add_input_operand (gcc_jit_extended_asm *ext_asm, | |
const char *asm_symbolic_name, | |
const char *constraint, | |
gcc_jit_rvalue *src); | |
/* Add "victim" to the list of registers clobbered by the extended | |
asm statement. It must be non-NULL. */ | |
void | |
gcc_jit_extended_asm_add_clobber (gcc_jit_extended_asm *ext_asm, | |
const char *victim); | |
/* Add "asm_stmts", a set of top-level asm statements, analogous to | |
those created by GCC's "basic" asm syntax in C at file scope. */ | |
void | |
gcc_jit_context_add_top_level_asm (gcc_jit_context *ctxt, | |
gcc_jit_location *loc, | |
const char *asm_stmts); | |
//#define LIBGCCJIT_HAVE_REFLECTION | |
/* Reflection functions to get the number of parameters, return type of | |
a function and whether a type is a bool from the C API. | |
This API entrypoint was added in LIBGCCJIT_ABI_16; you can test for its | |
presence using | |
#ifdef LIBGCCJIT_HAVE_REFLECTION | |
*/ | |
/* Get the return type of a function. */ | |
gcc_jit_type * | |
gcc_jit_function_get_return_type (gcc_jit_function *func); | |
/* Get the number of params of a function. */ | |
size_t | |
gcc_jit_function_get_param_count (gcc_jit_function *func); | |
/* Get the element type of an array type or NULL if it's not an array. */ | |
gcc_jit_type * | |
gcc_jit_type_dyncast_array (gcc_jit_type *type); | |
/* Return non-zero if the type is a bool. */ | |
int | |
gcc_jit_type_is_bool (gcc_jit_type *type); | |
/* Return the function type if it is one or NULL. */ | |
gcc_jit_function_type * | |
gcc_jit_type_dyncast_function_ptr_type (gcc_jit_type *type); | |
/* Given a function type, return its return type. */ | |
gcc_jit_type * | |
gcc_jit_function_type_get_return_type (gcc_jit_function_type *function_type); | |
/* Given a function type, return its number of parameters. */ | |
size_t | |
gcc_jit_function_type_get_param_count (gcc_jit_function_type *function_type); | |
/* Given a function type, return the type of the specified parameter. */ | |
gcc_jit_type * | |
gcc_jit_function_type_get_param_type (gcc_jit_function_type *function_type, | |
size_t index); | |
/* Return non-zero if the type is an integral. */ | |
int | |
gcc_jit_type_is_integral (gcc_jit_type *type); | |
/* Return the type pointed by the pointer type or NULL if it's not a | |
* pointer. */ | |
gcc_jit_type * | |
gcc_jit_type_is_pointer (gcc_jit_type *type); | |
/* Given a type, return a dynamic cast to a vector type or NULL. */ | |
gcc_jit_vector_type * | |
gcc_jit_type_dyncast_vector (gcc_jit_type *type); | |
/* Given a type, return a dynamic cast to a struct type or NULL. */ | |
gcc_jit_struct * | |
gcc_jit_type_is_struct (gcc_jit_type *type); | |
/* Given a vector type, return the number of units it contains. */ | |
size_t | |
gcc_jit_vector_type_get_num_units (gcc_jit_vector_type *vector_type); | |
/* Given a vector type, return the type of its elements. */ | |
gcc_jit_type * | |
gcc_jit_vector_type_get_element_type (gcc_jit_vector_type *vector_type); | |
/* Given a type, return the unqualified type, removing "const", "volatile" | |
* and alignment qualifiers. */ | |
gcc_jit_type * | |
gcc_jit_type_unqualified (gcc_jit_type *type); | |
]] | |
---@class libgccjit | |
---@field _rawlib ffi.namespace* | |
---@field context_acquire fun(): ffi.namespace*.gcc_jit_context | |
---@field version_major fun(): integer | |
---@field version_minor fun(): integer | |
---@field version_patchlevel fun(): integer | |
---@field type_get_void fun(): ffi.namespace*.gcc_jit_type | |
local export = setmetatable({ _rawlib = libgccjit }, { | |
__index = function (self, key) | |
local ok, sym = pcall(function () return libgccjit["gcc_jit_"..key] end) | |
if not ok then ok, sym = pcall(function () return libgccjit[key] end) end | |
if not ok then ok, sym = pcall(function () return libgccjit["GCC_JIT_"..key] end) end --enums | |
if not ok then ok, sym = pcall(function () return ffi.typeof("gcc_jit_"..key) end) end | |
self[key] = sym | |
return sym | |
end | |
}) | |
return export |
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