GCC Middle and Back End API Reference
stack-ptr-mod.cc File Reference
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "backend.h"
#include "rtl.h"
#include "df.h"
#include "memmodel.h"
#include "emit-rtl.h"
#include "tree-pass.h"
Include dependency graph for stack-ptr-mod.cc:

Functions

static void notice_stack_pointer_modification_1 (rtx x, const_rtx pat, void *data)
rtl_opt_passmake_pass_stack_ptr_mod (gcc::context *ctxt)

Function Documentation

◆ make_pass_stack_ptr_mod()

rtl_opt_pass * make_pass_stack_ptr_mod ( gcc::context * ctxt)

◆ notice_stack_pointer_modification_1()

void notice_stack_pointer_modification_1 ( rtx x,
const_rtx pat,
void * data )
static
Discover if the stack pointer is modified in a function. Copyright (C) 2007-2025 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/>.
Determine if the stack pointer is constant over the life of the function. Only useful before prologues have been emitted.

References crtl, GET_CODE, GET_RTX_CLASS, MEM_P, RTX_AUTOINC, stack_pointer_rtx, and XEXP.