366 lines
8.5 KiB
C
366 lines
8.5 KiB
C
/* $Id$ */
|
|
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*/
|
|
/* I N L I N E S U B S T I T U T I O N */
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <em_path.h>
|
|
#include <em_mnem.h>
|
|
#include <em_pseu.h>
|
|
#include "system.h"
|
|
#include "../share/types.h"
|
|
#include "il.h"
|
|
#include "../share/debug.h"
|
|
#include "../share/alloc.h"
|
|
#include "../share/global.h"
|
|
#include "../share/lset.h"
|
|
#include "../share/files.h"
|
|
#include "../share/map.h"
|
|
#include "il_aux.h"
|
|
#include "il1_anal.h"
|
|
#include "il1_aux.h"
|
|
#include "il2_aux.h"
|
|
#include "il3_change.h"
|
|
#include "il3_subst.h"
|
|
#include "../share/get.h"
|
|
#include "../share/put.h"
|
|
#include "../share/go.h"
|
|
#include <limits.h>
|
|
|
|
int calnr;
|
|
int complete_program;
|
|
calcnt_p cchead; /* call-count info of current proc */
|
|
STATIC long space = 0;
|
|
STATIC long total_size = 0;
|
|
|
|
STATIC char* cname;
|
|
STATIC char* ccname;
|
|
STATIC char* cname2;
|
|
|
|
/* For debugging only */
|
|
STATIC char* sname;
|
|
STATIC int kp_temps = 0;
|
|
|
|
int Ssubst;
|
|
#ifdef VERBOSE
|
|
int Senv, Srecursive, Slocals, Sinstrlab, Sparsefails, Spremoved, Scals;
|
|
int Sbig_caller, Sdispensable, Schangedcallee, Sbigcallee, Sspace, Szeroratio;
|
|
#endif
|
|
|
|
/* P A S S 1
|
|
*
|
|
* Pass 1 reads and analyses the EM text and the CFG.
|
|
* It determines for every procedure if it may be expanded
|
|
* in line and how it uses its formal parameters.
|
|
* It also collects all calls appearing in the program and
|
|
* recognizes the actual parameters of every call.
|
|
* The call descriptors are put in a file (calfile).
|
|
*/
|
|
|
|
STATIC void pass1(const char *lnam, const char *bnam, const char *cnam)
|
|
{
|
|
FILE* f, *gf, *cf, *ccf; /* The EM input, the basic block graph,
|
|
* the call-list file and the calcnt file.
|
|
*/
|
|
long laddr;
|
|
bblock_p g;
|
|
short kind;
|
|
line_p l;
|
|
|
|
f = openfile(lnam, "rb");
|
|
gf = openfile(bnam, "rb");
|
|
cf = openfile(cnam, "wb");
|
|
ccf = openfile(ccname, "wb");
|
|
mesregs = Lempty_set();
|
|
apriori(fproc);
|
|
/* use information from the procedure table to
|
|
* see which calls certainly cannot be expanded.
|
|
*/
|
|
while (TRUE)
|
|
{
|
|
laddr = ftell(f);
|
|
if (!getunit(gf, f, &kind, &g, &l, &curproc, TRUE))
|
|
break;
|
|
/* Read the control flow graph and EM text of
|
|
* one procedure and analyze it.
|
|
*/
|
|
if (kind == LDATA)
|
|
{
|
|
remunit(LDATA, (proc_p)0, l);
|
|
continue;
|
|
}
|
|
OUTTRACE("flow graph of proc %d read", curproc->p_id);
|
|
assert(INSTR(g->b_start) == ps_pro);
|
|
curproc->p_start = g;
|
|
curproc->P_LADDR = laddr;
|
|
/* address of em text in em-file */
|
|
/* address of graph in basic block file */
|
|
curproc->P_SIZE = proclength(curproc); /* #instructions */
|
|
total_size += curproc->P_SIZE;
|
|
if (BIG_PROC(curproc))
|
|
{
|
|
/* curproc is too large to be expanded in line */
|
|
UNSUITABLE(curproc);
|
|
}
|
|
calnr = 0;
|
|
anal_proc(curproc, cf, ccf);
|
|
OUTTRACE("proc %d processed", curproc->p_id);
|
|
remunit(LTEXT, curproc, (line_p)0);
|
|
/* remove control flow graph + text */
|
|
OUTTRACE("graph of proc %d removed", curproc->p_id);
|
|
Ldeleteset(mesregs);
|
|
mesregs = Lempty_set();
|
|
}
|
|
fclose(f);
|
|
fclose(gf);
|
|
fclose(cf);
|
|
fclose(ccf);
|
|
}
|
|
|
|
/* P A S S 2
|
|
*
|
|
* Pass 2 reads the calfile and determines which calls should
|
|
* be expanded in line. It does not use the EM text.
|
|
*/
|
|
|
|
STATIC void pass2(const char *cnam, long space)
|
|
{
|
|
FILE* cf, *cf2, *ccf;
|
|
call_p c, a;
|
|
|
|
cf = openfile(cnam, "rb");
|
|
cf2 = openfile(cname2, "wb");
|
|
ccf = openfile(ccname, "rb");
|
|
while ((c = getcall(cf)) != (call_p)0)
|
|
{
|
|
/* process all calls */
|
|
if (SUITABLE(c->cl_proc) && anal_params(c))
|
|
{
|
|
/* called proc. may be put in line */
|
|
/* see which parameters may be put in line */
|
|
assign_ratio(c); /* assign a rank */
|
|
a = abstract(c); /* abstract essential info */
|
|
append_abstract(a, a->cl_caller);
|
|
/* put it in call-list of calling proc. */
|
|
putcall(c, cf2, (short)0);
|
|
}
|
|
else
|
|
{
|
|
rem_call(c);
|
|
}
|
|
}
|
|
select_calls(fproc, ccf, space);
|
|
fclose(cf);
|
|
if (!kp_temps)
|
|
unlink(cnam);
|
|
fclose(cf2);
|
|
fclose(ccf);
|
|
if (!kp_temps)
|
|
unlink(ccname);
|
|
cf2 = openfile(cname2, "rb");
|
|
add_actuals(fproc, cf2);
|
|
cleancals(fproc); /* remove calls that were not selected */
|
|
/* add actual parameters to each selected call */
|
|
fclose(cf2);
|
|
if (!kp_temps)
|
|
unlink(cname2);
|
|
}
|
|
|
|
/* P A S S 3
|
|
*
|
|
* pass 3 reads the substitution file and performs all
|
|
* substitutions described in that file. It reads the
|
|
* original EM text and produced a new (optimized)
|
|
* EM textfile.
|
|
*/
|
|
|
|
void pass3(const char *lnam, const char *lnam2)
|
|
{
|
|
bool verbose = TRUE;
|
|
FILE* lfile, *lfilerand, *lfile2, *sfile;
|
|
call_p c, next;
|
|
line_p l, startscan, cal;
|
|
short lastcid; /* last call-id seen */
|
|
|
|
lfile = openfile(lnam, "rb");
|
|
lfilerand = openfile(lnam, "rb");
|
|
lfile2 = openfile(lnam2, "wb");
|
|
if (verbose)
|
|
{
|
|
sfile = openfile(sname, "wb");
|
|
}
|
|
mesregs = Lempty_set();
|
|
while ((l = get_text(lfile, &curproc)) != (line_p)0)
|
|
{
|
|
if (curproc == (proc_p)0)
|
|
{
|
|
/* Just a data-unit; no real instructions */
|
|
putlines(l->l_next, lfile2);
|
|
oldline(l);
|
|
continue;
|
|
}
|
|
if (IS_DISPENSABLE(curproc))
|
|
{
|
|
liquidate(curproc, l->l_next);
|
|
}
|
|
else
|
|
{
|
|
startscan = l->l_next;
|
|
lastcid = 0;
|
|
for (c = curproc->P_CALS; c != (call_p)0; c = next)
|
|
{
|
|
next = c->cl_cdr;
|
|
cal = scan_to_cal(startscan, c->cl_id - lastcid);
|
|
assert(cal != (line_p)0);
|
|
startscan = scan_to_cal(cal->l_next, 1);
|
|
/* next CAL */
|
|
lastcid = c->cl_id;
|
|
/* next CAL after current one */
|
|
substitute(lfilerand, c, cal, l->l_next);
|
|
if (verbose)
|
|
{
|
|
putcall(c, sfile, 0);
|
|
}
|
|
else
|
|
{
|
|
rem_call(c);
|
|
}
|
|
}
|
|
}
|
|
putlines(l->l_next, lfile2);
|
|
Ldeleteset(mesregs);
|
|
mesregs = Lempty_set();
|
|
oldline(l);
|
|
}
|
|
fclose(lfile);
|
|
fclose(lfile2);
|
|
if (verbose)
|
|
{
|
|
fclose(sfile);
|
|
if (!kp_temps)
|
|
unlink(sname);
|
|
}
|
|
}
|
|
|
|
STATIC void il_extptab(ptab)
|
|
proc_p ptab;
|
|
{
|
|
/* Allocate space for extension of proctable entries.
|
|
* Also, initialise some of the fields just allocated.
|
|
*/
|
|
|
|
register proc_p p;
|
|
|
|
for (p = ptab; p != (proc_p)0; p = p->p_next)
|
|
{
|
|
p->p_extend = newilpx();
|
|
p->P_ORGLABELS = p->p_nrlabels;
|
|
p->P_ORGLOCALS = p->p_localbytes;
|
|
}
|
|
}
|
|
|
|
STATIC void il_cleanptab(ptab)
|
|
proc_p ptab;
|
|
{
|
|
/* De-allocate space for extensions */
|
|
|
|
register proc_p p;
|
|
|
|
for (p = ptab; p != (proc_p)0; p = p->p_next)
|
|
{
|
|
oldilpx(p->p_extend);
|
|
}
|
|
}
|
|
|
|
#ifdef VERBOSE
|
|
STATIC void Sdiagnostics()
|
|
{
|
|
/* print statictical information */
|
|
|
|
fprintf(stderr, "STATISTICS:\n");
|
|
fprintf(stderr, "Info about procedures:\n");
|
|
fprintf(stderr, "environment accessed: %d\n", Senv);
|
|
fprintf(stderr, "recursive: %d\n", Srecursive);
|
|
fprintf(stderr, "too many locals: %d\n", Slocals);
|
|
fprintf(stderr, "instr. lab in data block: %d\n", Sinstrlab);
|
|
fprintf(stderr, "procedures removed: %d\n", Spremoved);
|
|
fprintf(stderr, "\nInfo about calls:\n");
|
|
fprintf(stderr, "total number of calls: %d\n", Scals);
|
|
fprintf(stderr, "total number of calls substituted: %d\n", Ssubst);
|
|
fprintf(stderr, "parser failed: %d\n", Sparsefails);
|
|
fprintf(stderr, "caller too big: %d\n", Sbig_caller);
|
|
fprintf(stderr, "caller dispensable: %d\n", Sdispensable);
|
|
fprintf(stderr, "callee is changed: %d\n", Schangedcallee);
|
|
fprintf(stderr, "callee too big: %d\n", Sbigcallee);
|
|
fprintf(stderr, "no space available: %d\n", Sspace);
|
|
fprintf(stderr, "zero ratio: %d\n", Szeroratio);
|
|
}
|
|
#endif
|
|
|
|
void il_flags(void *vp)
|
|
{
|
|
char *p = vp;
|
|
|
|
switch (*p++)
|
|
{
|
|
case 's':
|
|
while (*p != '\0')
|
|
{
|
|
space = 10 * space + *p++ - '0';
|
|
}
|
|
break;
|
|
case 'a':
|
|
complete_program = 1;
|
|
break;
|
|
case 't':
|
|
strcpy(cname, ".");
|
|
strcpy(ccname, ".");
|
|
strcpy(sname, ".");
|
|
strcpy(cname2, ".");
|
|
kp_temps = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(argc, argv) int argc;
|
|
char* argv[];
|
|
{
|
|
struct files* files = findfiles(argc, argv);
|
|
FILE* f;
|
|
char* tmpdir = sys_gettmpdir();
|
|
|
|
go(argc, argv, no_action, no_action, no_action, il_flags);
|
|
il_extptab(fproc); /* add extended data structures */
|
|
|
|
cname = sys_maketempfile("il", "i1");
|
|
ccname = sys_maketempfile("il", "i2");
|
|
sname = sys_maketempfile("il", "i3");
|
|
cname2 = sys_maketempfile("il", "i4");
|
|
|
|
pass1(files->lname_in, files->bname_in, cname); /* grep calls, analyse procedures */
|
|
space = total_size * space / 100;
|
|
pass2(cname, space); /* select calls to be expanded */
|
|
pass3(files->lname_in, files->lname_out); /* do substitutions */
|
|
f = openfile(files->dname_out, "wb");
|
|
il_cleanptab(fproc); /* remove extended data structures */
|
|
putdtable(fdblock, f);
|
|
f = openfile(files->pname_out, "wb");
|
|
putptable(fproc, f, FALSE);
|
|
report("inline substitutions", Ssubst);
|
|
#ifdef VERBOSE
|
|
if (verbose_flag)
|
|
{
|
|
Sdiagnostics();
|
|
}
|
|
#endif
|
|
#ifdef DEBUG
|
|
core_usage();
|
|
#endif
|
|
exit(0);
|
|
}
|