Viewing file:  pr47744-3.c (1.84 KB) -rw-r--r--
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/* { dg-do compile } */
typedef union rtunion_def {
struct rtx_def *rtx;
} rtunion;
typedef struct rtx_def {
unsigned short code;
rtunion fld[1];
} *rtx;
extern rtx recog_operand[];
extern rtx *recog_operand_loc[];
extern int reload_n_operands;
extern void find_dummy_reload (int, int);
extern int asm_noperands (rtx);
extern int n_occurrences (char **);
char operands_match[10][10];
void find_reloads (rtx insn, int n_alternatives, int commutative)
{
register int i, j;
int noperands;
char *constraints[10];
int address_reloaded[10];
int this_alternative[10];
char this_alternative_win[10];
int this_alternative_matches[10];
int this_alternative_number;
rtx body = ((insn)->fld[3].rtx);
int operand_mode[10];
if (body->code == 1)
{
reload_n_operands = noperands = asm_noperands (body);
n_alternatives = n_occurrences (constraints);
}
for (this_alternative_number = 0;
this_alternative_number < n_alternatives;
this_alternative_number++)
for (i = 0;
i < noperands;
i++)
{
register char *p = constraints[i];
register int win = 0;
int badop = 1;
int c;
register rtx operand = recog_operand[i];
int force_reload = 0;
this_alternative_win[i] = 0;
this_alternative[i] = 1;
while (*p && (c = *p++) != ',')
switch (c)
{
case '4':
c -= '0';
this_alternative_matches[i] = c;
if ((c != commutative
|| i != commutative + 1)
&& operands_match[c][i])
win = this_alternative_win[c];
else
find_dummy_reload (operand_mode[i], this_alternative[c]);
if (! win || force_reload)
for (j = 0; j < i; j++)
if (this_alternative_matches[j]
== this_alternative_matches[i])
badop = 1;
break;
case '<':
if (operand->code == 2
&& ! address_reloaded[i]
&& operand->fld[0].rtx->code == 3)
win = 1;
}
}
}
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