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drasticly simplify emit_assign_expr now that I have a much better

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understanding of when an explicit assigment is needed. seems to work for
everything I throw at it.
Also, fix ! unary ops (caused by the - unary op fix:/)
This commit is contained in:
Bill Currie 2001-07-25 21:47:05 +00:00
parent 0c2cd8633c
commit d44f60f17c
1 changed files with 7 additions and 15 deletions
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22
tools/qfcc/source/expr.c
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@ -1085,7 +1085,7 @@ emit_function_call (expr_t *e, def_t *dest)
}
def_t *
emit_assign_expr (expr_t *e, def_t *dest)
emit_assign_expr (expr_t *e)
{
def_t *def_a, *def_b;
opcode_t *op;
@ -1110,19 +1110,11 @@ emit_assign_expr (expr_t *e, def_t *dest)
error (e1, "assignment to constant %s", def_a->name);
}
}
if (e2->type == ex_expr) {
def_b = emit_sub_expr (e2, def_a);
} else {
def_b = emit_sub_expr (e2, 0);
def_b = emit_sub_expr (e2, def_a);
if (def_b != def_a) {
op = PR_Opcode_Find ("=", 5, def_a, def_b, def_b);
emit_statement (e->line, op, def_b, def_a, 0);
}
if (!def_b->name)
dest = def_a;
if (dest) {
op = PR_Opcode_Find ("=", 5, dest, def_b, def_b);
emit_statement (e->line, op, def_b, dest, 0);
}
}
return def_b;
}
@ -1144,7 +1136,7 @@ emit_sub_expr (expr_t *e, def_t *dest)
if (e->e.expr.op == 'c')
return emit_function_call (e, dest);
if (e->e.expr.op == '=')
return emit_assign_expr (e, dest);
return emit_assign_expr (e);
def_a = emit_sub_expr (e->e.expr.e1, 0);
def_b = emit_sub_expr (e->e.expr.e2, 0);
switch (e->e.expr.op) {
@ -1230,11 +1222,11 @@ emit_sub_expr (expr_t *e, def_t *dest)
priority = 3;
def_a = PR_ReuseConstant (&zero, 0);
def_b = emit_sub_expr (e->e.expr.e1, 0);
if (!dest)
dest = PR_GetTempDef (e->e.expr.type, pr_scope);
} else {
abort ();
}
if (!dest)
dest = PR_GetTempDef (e->e.expr.type, pr_scope);
op = PR_Opcode_Find (operator, priority, def_a, def_b, dest);
return emit_statement (e->line, op, def_a, def_b, dest);
case ex_def:
@ -1290,7 +1282,7 @@ emit_expr (expr_t *e)
case ex_expr:
switch (e->e.expr.op) {
case '=':
emit_assign_expr (e, 0);
emit_assign_expr (e);
break;
case 'n':
emit_branch (e->line, op_ifnot, e->e.expr.e1, e->e.expr.e2);