linux-stable/scripts/gcc-plugins/gcc-generate-ipa-pass.h
Ard Biesheuvel 4c78c7271f gcc-plugins: remove support for GCC 4.9 and older
The minimum GCC version has been bumped to 5.1, so we can get rid of all
the compatibility code for anything older than that.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210922182632.633394-1-ardb@kernel.org
2021-10-04 10:58:08 -07:00

248 lines
6.3 KiB
C++

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Generator for IPA pass related boilerplate code/data
*
* Supports gcc 4.5-6
*
* Usage:
*
* 1. before inclusion define PASS_NAME
* 2. before inclusion define NO_* for unimplemented callbacks
* NO_GENERATE_SUMMARY
* NO_READ_SUMMARY
* NO_WRITE_SUMMARY
* NO_READ_OPTIMIZATION_SUMMARY
* NO_WRITE_OPTIMIZATION_SUMMARY
* NO_STMT_FIXUP
* NO_FUNCTION_TRANSFORM
* NO_VARIABLE_TRANSFORM
* NO_GATE
* NO_EXECUTE
* 3. before inclusion define PROPERTIES_* and *TODO_FLAGS_* to override
* the default 0 values
* 4. for convenience, all the above will be undefined after inclusion!
* 5. the only exported name is make_PASS_NAME_pass() to register with gcc
*/
#ifndef PASS_NAME
#error at least PASS_NAME must be defined
#else
#define __GCC_PLUGIN_STRINGIFY(n) #n
#define _GCC_PLUGIN_STRINGIFY(n) __GCC_PLUGIN_STRINGIFY(n)
#define _GCC_PLUGIN_CONCAT2(x, y) x ## y
#define _GCC_PLUGIN_CONCAT3(x, y, z) x ## y ## z
#define __PASS_NAME_PASS_DATA(n) _GCC_PLUGIN_CONCAT2(n, _pass_data)
#define _PASS_NAME_PASS_DATA __PASS_NAME_PASS_DATA(PASS_NAME)
#define __PASS_NAME_PASS(n) _GCC_PLUGIN_CONCAT2(n, _pass)
#define _PASS_NAME_PASS __PASS_NAME_PASS(PASS_NAME)
#define _PASS_NAME_NAME _GCC_PLUGIN_STRINGIFY(PASS_NAME)
#define __MAKE_PASS_NAME_PASS(n) _GCC_PLUGIN_CONCAT3(make_, n, _pass)
#define _MAKE_PASS_NAME_PASS __MAKE_PASS_NAME_PASS(PASS_NAME)
#ifdef NO_GENERATE_SUMMARY
#define _GENERATE_SUMMARY NULL
#else
#define __GENERATE_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _generate_summary)
#define _GENERATE_SUMMARY __GENERATE_SUMMARY(PASS_NAME)
#endif
#ifdef NO_READ_SUMMARY
#define _READ_SUMMARY NULL
#else
#define __READ_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _read_summary)
#define _READ_SUMMARY __READ_SUMMARY(PASS_NAME)
#endif
#ifdef NO_WRITE_SUMMARY
#define _WRITE_SUMMARY NULL
#else
#define __WRITE_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _write_summary)
#define _WRITE_SUMMARY __WRITE_SUMMARY(PASS_NAME)
#endif
#ifdef NO_READ_OPTIMIZATION_SUMMARY
#define _READ_OPTIMIZATION_SUMMARY NULL
#else
#define __READ_OPTIMIZATION_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _read_optimization_summary)
#define _READ_OPTIMIZATION_SUMMARY __READ_OPTIMIZATION_SUMMARY(PASS_NAME)
#endif
#ifdef NO_WRITE_OPTIMIZATION_SUMMARY
#define _WRITE_OPTIMIZATION_SUMMARY NULL
#else
#define __WRITE_OPTIMIZATION_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _write_optimization_summary)
#define _WRITE_OPTIMIZATION_SUMMARY __WRITE_OPTIMIZATION_SUMMARY(PASS_NAME)
#endif
#ifdef NO_STMT_FIXUP
#define _STMT_FIXUP NULL
#else
#define __STMT_FIXUP(n) _GCC_PLUGIN_CONCAT2(n, _stmt_fixup)
#define _STMT_FIXUP __STMT_FIXUP(PASS_NAME)
#endif
#ifdef NO_FUNCTION_TRANSFORM
#define _FUNCTION_TRANSFORM NULL
#else
#define __FUNCTION_TRANSFORM(n) _GCC_PLUGIN_CONCAT2(n, _function_transform)
#define _FUNCTION_TRANSFORM __FUNCTION_TRANSFORM(PASS_NAME)
#endif
#ifdef NO_VARIABLE_TRANSFORM
#define _VARIABLE_TRANSFORM NULL
#else
#define __VARIABLE_TRANSFORM(n) _GCC_PLUGIN_CONCAT2(n, _variable_transform)
#define _VARIABLE_TRANSFORM __VARIABLE_TRANSFORM(PASS_NAME)
#endif
#ifdef NO_GATE
#define _GATE NULL
#define _HAS_GATE false
#else
#define __GATE(n) _GCC_PLUGIN_CONCAT2(n, _gate)
#define _GATE __GATE(PASS_NAME)
#define _HAS_GATE true
#endif
#ifdef NO_EXECUTE
#define _EXECUTE NULL
#define _HAS_EXECUTE false
#else
#define __EXECUTE(n) _GCC_PLUGIN_CONCAT2(n, _execute)
#define _EXECUTE __EXECUTE(PASS_NAME)
#define _HAS_EXECUTE true
#endif
#ifndef PROPERTIES_REQUIRED
#define PROPERTIES_REQUIRED 0
#endif
#ifndef PROPERTIES_PROVIDED
#define PROPERTIES_PROVIDED 0
#endif
#ifndef PROPERTIES_DESTROYED
#define PROPERTIES_DESTROYED 0
#endif
#ifndef TODO_FLAGS_START
#define TODO_FLAGS_START 0
#endif
#ifndef TODO_FLAGS_FINISH
#define TODO_FLAGS_FINISH 0
#endif
#ifndef FUNCTION_TRANSFORM_TODO_FLAGS_START
#define FUNCTION_TRANSFORM_TODO_FLAGS_START 0
#endif
namespace {
static const pass_data _PASS_NAME_PASS_DATA = {
.type = IPA_PASS,
.name = _PASS_NAME_NAME,
.optinfo_flags = OPTGROUP_NONE,
.tv_id = TV_NONE,
.properties_required = PROPERTIES_REQUIRED,
.properties_provided = PROPERTIES_PROVIDED,
.properties_destroyed = PROPERTIES_DESTROYED,
.todo_flags_start = TODO_FLAGS_START,
.todo_flags_finish = TODO_FLAGS_FINISH,
};
class _PASS_NAME_PASS : public ipa_opt_pass_d {
public:
_PASS_NAME_PASS() : ipa_opt_pass_d(_PASS_NAME_PASS_DATA,
g,
_GENERATE_SUMMARY,
_WRITE_SUMMARY,
_READ_SUMMARY,
_WRITE_OPTIMIZATION_SUMMARY,
_READ_OPTIMIZATION_SUMMARY,
_STMT_FIXUP,
FUNCTION_TRANSFORM_TODO_FLAGS_START,
_FUNCTION_TRANSFORM,
_VARIABLE_TRANSFORM) {}
#ifndef NO_GATE
virtual bool gate(function *) { return _GATE(); }
virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
#ifndef NO_EXECUTE
virtual unsigned int execute(function *) { return _EXECUTE(); }
#endif
};
}
opt_pass *_MAKE_PASS_NAME_PASS(void)
{
return new _PASS_NAME_PASS();
}
#else
struct opt_pass *_MAKE_PASS_NAME_PASS(void)
{
return &_PASS_NAME_PASS.pass;
}
#endif
/* clean up user provided defines */
#undef PASS_NAME
#undef NO_GENERATE_SUMMARY
#undef NO_WRITE_SUMMARY
#undef NO_READ_SUMMARY
#undef NO_WRITE_OPTIMIZATION_SUMMARY
#undef NO_READ_OPTIMIZATION_SUMMARY
#undef NO_STMT_FIXUP
#undef NO_FUNCTION_TRANSFORM
#undef NO_VARIABLE_TRANSFORM
#undef NO_GATE
#undef NO_EXECUTE
#undef FUNCTION_TRANSFORM_TODO_FLAGS_START
#undef PROPERTIES_DESTROYED
#undef PROPERTIES_PROVIDED
#undef PROPERTIES_REQUIRED
#undef TODO_FLAGS_FINISH
#undef TODO_FLAGS_START
/* clean up generated defines */
#undef _EXECUTE
#undef __EXECUTE
#undef _FUNCTION_TRANSFORM
#undef __FUNCTION_TRANSFORM
#undef _GATE
#undef __GATE
#undef _GCC_PLUGIN_CONCAT2
#undef _GCC_PLUGIN_CONCAT3
#undef _GCC_PLUGIN_STRINGIFY
#undef __GCC_PLUGIN_STRINGIFY
#undef _GENERATE_SUMMARY
#undef __GENERATE_SUMMARY
#undef _HAS_EXECUTE
#undef _HAS_GATE
#undef _MAKE_PASS_NAME_PASS
#undef __MAKE_PASS_NAME_PASS
#undef _PASS_NAME_NAME
#undef _PASS_NAME_PASS
#undef __PASS_NAME_PASS
#undef _PASS_NAME_PASS_DATA
#undef __PASS_NAME_PASS_DATA
#undef _READ_OPTIMIZATION_SUMMARY
#undef __READ_OPTIMIZATION_SUMMARY
#undef _READ_SUMMARY
#undef __READ_SUMMARY
#undef _STMT_FIXUP
#undef __STMT_FIXUP
#undef _VARIABLE_TRANSFORM
#undef __VARIABLE_TRANSFORM
#undef _WRITE_OPTIMIZATION_SUMMARY
#undef __WRITE_OPTIMIZATION_SUMMARY
#undef _WRITE_SUMMARY
#undef __WRITE_SUMMARY
#endif /* PASS_NAME */