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[qfcc] Create alias def for defs accessed via pointer

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This the fixes the incorrect flow analysis caused by the def being seen
to have the wrong size (structure field of structure def seen through a
constant pointer). Fixes the ICE, but the pointer constant is broken
somewhere in dags, presumably.
This commit is contained in:
Bill Currie 2020-03-07 01:30:36 +09:00
parent faa6eabfbe
commit 48514ba2f3
2 changed files with 10 additions and 2 deletions
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4
tools/qfcc/source/flow.c
View file

@ -859,8 +859,10 @@ flow_analyze_statement (statement_t *s, set_t *use, set_t *def, set_t *kill,
&& s->opc->o.value->lltype == ev_pointer
&& s->opc->o.value->v.pointer.def) {
operand_t *op;
def_t *alias;
ex_pointer_t *ptr = &s->opc->o.value->v.pointer;
op = def_operand (ptr->def, ptr->type);
alias = alias_def (ptr->def, ptr->type, ptr->val);
op = def_operand (alias, ptr->type);
flow_add_op_var (def, op);
if (operands)
operands[0] = op;

8
tools/qfcc/source/statements.c
View file

@ -103,7 +103,13 @@ operand_string (operand_t *op)
op->o.value->v.quaternion_val[2],
op->o.value->v.quaternion_val[3]);
case ev_pointer:
return va ("ptr %d", op->o.value->v.pointer.val);
if (op->o.value->v.pointer.def) {
return va ("ptr %s+%d",
op->o.value->v.pointer.def->name,
op->o.value->v.pointer.val);
} else {
return va ("ptr %d", op->o.value->v.pointer.val);
}
case ev_field:
return va ("field %d", op->o.value->v.pointer.val);
case ev_entity: