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Rewrite the v6 modulo implementation.

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While trying to understand bind expressions, I discovered that the v6
modulo code was incorrect. This version is correct but uses one too many
temps. That's next.
This commit is contained in:
Bill Currie 2010-12-18 15:22:22 +09:00
parent cdb9783d69
commit 00e50c0ad3
1 changed files with 11 additions and 13 deletions
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24
tools/qfcc/source/expr.c
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@ -1697,24 +1697,22 @@ binary_expr (int op, expr_t *e1, expr_t *e2)
switch (op) {
case '%':
{
expr_t *tmp1, *tmp2;
expr_t *tmp1, *tmp2, *tmp3;
e = new_block_expr ();
if (e2->type < ex_nil)
tmp1 = new_temp_def_expr (&type_float);
else
tmp1 = e2;
tmp1 = new_temp_def_expr (&type_float);
tmp2 = new_temp_def_expr (&type_float);
e2 = binary_expr ('&', e2, new_float_expr (-1.0));
tmp3 = new_temp_def_expr (&type_float);
e1 = binary_expr ('&', e1, new_float_expr (-1.0));
if (tmp1 != e2)
append_expr (e, new_bind_expr (e2, tmp1));
append_expr (e, new_bind_expr (binary_expr ('/', e1, tmp1),
tmp2));
e2 = binary_expr ('&', tmp2, new_float_expr (-1.0));
e->e.block.result = binary_expr ('-', tmp2, e2);
e2 = binary_expr ('&', e2, new_float_expr (-1.0));
append_expr (e, assign_expr (tmp1, e1));
append_expr (e, assign_expr (tmp2, e2));
e1 = binary_expr ('/', tmp1, tmp2);
append_expr (e, assign_expr (tmp3, e1));
e2 = binary_expr ('&', tmp3, new_float_expr (-1.0));
e->e.block.result = binary_expr ('*', tmp2, e2);
e2 = e;
e1 = tmp1;
op = '*';
op = '-';
}
break;
}