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fix a nasty bug where immediates would get aliased. (eg, 2 and 1073741824).

This commit is contained in:
Bill Currie 2003-03-03 21:09:41 +00:00
parent f57eb911cc
commit 4c5c711ff5
1 changed files with 12 additions and 8 deletions
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20
tools/qfcc/source/immediate.c
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@ -59,7 +59,7 @@ static __attribute__ ((unused)) const char rcsid[] =
typedef struct {
def_t *def;
union {
const char *string_val;
string_t string_val;
float float_val;
float vector_val[3];
int entity_val;
@ -88,7 +88,8 @@ imm_get_hash (void *_imm, void *_tab)
hashtab_t **tab = (hashtab_t **) _tab;
if (tab == &string_imm_defs) {
return imm->i.string_val ? Hash_String (imm->i.string_val) : 0;
const char *str = pr.strings->strings + imm->i.string_val;
return str ? Hash_String (str) : 0;
} else if (tab == &float_imm_defs) {
return imm->i.integer_val;
} else if (tab == &vector_imm_defs) {
@ -119,9 +120,9 @@ imm_compare (void *_imm1, void *_imm2, void *_tab)
hashtab_t **tab = (hashtab_t **) _tab;
if (tab == &string_imm_defs) {
return (imm1->i.string_val == imm2->i.string_val
|| (imm1->i.string_val && imm2->i.string_val
&& !strcmp (imm1->i.string_val, imm2->i.string_val)));
const char *str1 = pr.strings->strings + imm1->i.string_val;
const char *str2 = pr.strings->strings + imm2->i.string_val;
return (str1 == str2 || (str1 && str2 && !strcmp (str1, str2)));
} else if (tab == &float_imm_defs) {
return imm1->i.float_val == imm2->i.float_val;
} else if (tab == &vector_imm_defs) {
@ -166,7 +167,6 @@ ReuseConstant (expr_t *expr, def_t *def)
clear_immediates ();
}
cn = 0;
memcpy (&search.i, &e.e, sizeof (search.i));
switch (e.type) {
case ex_entity:
tab = entity_imm_defs;
@ -198,11 +198,13 @@ ReuseConstant (expr_t *expr, def_t *def)
e.e.float_val = e.e.uinteger_val;
else
e.e.float_val = e.e.integer_val;
e.type = ex_float;
case ex_float:
tab = float_imm_defs;
type = &type_float;
break;
case ex_string:
e.e.integer_val = ReuseString (e.e.string_val);
tab = string_imm_defs;
type = &type_string;
break;
@ -217,8 +219,11 @@ ReuseConstant (expr_t *expr, def_t *def)
default:
abort ();
}
memcpy (&search.i, &e.e, sizeof (search.i));
imm = (immediate_t *) Hash_FindElement (tab, &search);
if (imm) {
if (imm->i.integer_val != e.e.integer_val)
notice (&e, "%08x %08x", imm->i.integer_val, e.e.integer_val);
cn = imm->def;
if (def) {
free_location (def);
@ -257,7 +262,6 @@ ReuseConstant (expr_t *expr, def_t *def)
// copy the immediate to the global area
switch (e.type) {
case ex_string:
e.e.integer_val = ReuseString (e.e.string_val);
reloc = new_reloc (cn->ofs, rel_def_string);
break;
case ex_func:
@ -280,7 +284,7 @@ ReuseConstant (expr_t *expr, def_t *def)
imm = malloc (sizeof (immediate_t));
imm->def = cn;
memcpy (&imm->i, &expr->e, sizeof (imm->i));
memcpy (&imm->i, &e.e, sizeof (imm->i));
Hash_AddElement (tab, imm);