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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc4/] [gcc/] [fortran/] [st.c] - Rev 519
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/* Build executable statement trees. Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Andy Vaught 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/>. */ /* Executable statements are strung together into a singly linked list of code structures. These structures are later translated into GCC GENERIC tree structures and from there to executable code for a target. */ #include "config.h" #include "system.h" #include "gfortran.h" gfc_code new_st; /* Zeroes out the new_st structure. */ void gfc_clear_new_st (void) { memset (&new_st, '\0', sizeof (new_st)); new_st.op = EXEC_NOP; } /* Get a gfc_code structure. */ gfc_code * gfc_get_code (void) { gfc_code *c; c = XCNEW (gfc_code); c->loc = gfc_current_locus; return c; } /* Given some part of a gfc_code structure, append a set of code to its tail, returning a pointer to the new tail. */ gfc_code * gfc_append_code (gfc_code *tail, gfc_code *new_code) { if (tail != NULL) { while (tail->next != NULL) tail = tail->next; tail->next = new_code; } while (new_code->next != NULL) new_code = new_code->next; return new_code; } /* Free a single code structure, but not the actual structure itself. */ void gfc_free_statement (gfc_code *p) { if (p->expr1) gfc_free_expr (p->expr1); if (p->expr2) gfc_free_expr (p->expr2); switch (p->op) { case EXEC_NOP: case EXEC_END_BLOCK: case EXEC_ASSIGN: case EXEC_INIT_ASSIGN: case EXEC_GOTO: case EXEC_CYCLE: case EXEC_RETURN: case EXEC_END_PROCEDURE: case EXEC_IF: case EXEC_PAUSE: case EXEC_STOP: case EXEC_EXIT: case EXEC_WHERE: case EXEC_IOLENGTH: case EXEC_POINTER_ASSIGN: case EXEC_DO_WHILE: case EXEC_CONTINUE: case EXEC_TRANSFER: case EXEC_LABEL_ASSIGN: case EXEC_ENTRY: case EXEC_ARITHMETIC_IF: break; case EXEC_BLOCK: gfc_free_namespace (p->ext.ns); break; case EXEC_COMPCALL: case EXEC_CALL_PPC: case EXEC_CALL: case EXEC_ASSIGN_CALL: gfc_free_actual_arglist (p->ext.actual); break; case EXEC_SELECT: case EXEC_SELECT_TYPE: if (p->ext.case_list) gfc_free_case_list (p->ext.case_list); break; case EXEC_DO: gfc_free_iterator (p->ext.iterator, 1); break; case EXEC_ALLOCATE: case EXEC_DEALLOCATE: gfc_free_alloc_list (p->ext.alloc.list); break; case EXEC_OPEN: gfc_free_open (p->ext.open); break; case EXEC_CLOSE: gfc_free_close (p->ext.close); break; case EXEC_BACKSPACE: case EXEC_ENDFILE: case EXEC_REWIND: case EXEC_FLUSH: gfc_free_filepos (p->ext.filepos); break; case EXEC_INQUIRE: gfc_free_inquire (p->ext.inquire); break; case EXEC_WAIT: gfc_free_wait (p->ext.wait); break; case EXEC_READ: case EXEC_WRITE: gfc_free_dt (p->ext.dt); break; case EXEC_DT_END: /* The ext.dt member is a duplicate pointer and doesn't need to be freed. */ break; case EXEC_FORALL: gfc_free_forall_iterator (p->ext.forall_iterator); break; case EXEC_OMP_DO: case EXEC_OMP_END_SINGLE: case EXEC_OMP_PARALLEL: case EXEC_OMP_PARALLEL_DO: case EXEC_OMP_PARALLEL_SECTIONS: case EXEC_OMP_SECTIONS: case EXEC_OMP_SINGLE: case EXEC_OMP_TASK: case EXEC_OMP_WORKSHARE: case EXEC_OMP_PARALLEL_WORKSHARE: gfc_free_omp_clauses (p->ext.omp_clauses); break; case EXEC_OMP_CRITICAL: gfc_free (CONST_CAST (char *, p->ext.omp_name)); break; case EXEC_OMP_FLUSH: gfc_free_namelist (p->ext.omp_namelist); break; case EXEC_OMP_ATOMIC: case EXEC_OMP_BARRIER: case EXEC_OMP_MASTER: case EXEC_OMP_ORDERED: case EXEC_OMP_END_NOWAIT: case EXEC_OMP_TASKWAIT: break; default: gfc_internal_error ("gfc_free_statement(): Bad statement"); } } /* Free a code statement and all other code structures linked to it. */ void gfc_free_statements (gfc_code *p) { gfc_code *q; for (; p; p = q) { q = p->next; if (p->block) gfc_free_statements (p->block); gfc_free_statement (p); gfc_free (p); } }