static int draw_condition_binary_lor(ivl_expr_t expr)
{
ivl_expr_t le = ivl_expr_oper1(expr);
ivl_expr_t re = ivl_expr_oper2(expr);
int lx = draw_eval_condition(le);
if (lx < 8) {
int tmp = allocate_flag();
fprintf(vvp_out, " %%flag_mov %d, %d;\n", tmp, lx);
lx = tmp;
}
int rx = draw_eval_condition(re);
fprintf(vvp_out, " %%flag_or %d, %d;\n", rx, lx);
clr_flag(lx);
return rx;
}
static void draw_ternary_vec4(ivl_expr_t expr)
{
ivl_expr_t cond = ivl_expr_oper1(expr);
ivl_expr_t true_ex = ivl_expr_oper2(expr);
ivl_expr_t false_ex = ivl_expr_oper3(expr);
unsigned lab_true = local_count++;
unsigned lab_out = local_count++;
int use_flag = draw_eval_condition(cond);
/* The condition flag is used after possibly other statements,
so we need to put it into a non-common place. Allocate a
safe flag bit and move the condition to the flag position. */
if (use_flag < 8) {
int tmp_flag = allocate_flag();
assert(tmp_flag >= 8);
fprintf(vvp_out, " %%flag_mov %d, %d;\n", tmp_flag, use_flag);
use_flag = tmp_flag;
}
fprintf(vvp_out, " %%jmp/0 T_%u.%u, %d;\n", thread_count, lab_true, use_flag);
/* If the condition is true or xz (not false), we need the true
expression. If the condition is true, then we ONLY need the
true expression. */
draw_eval_vec4(true_ex);
fprintf(vvp_out, " %%jmp/1 T_%u.%u, %d;\n", thread_count, lab_out, use_flag);
fprintf(vvp_out, "T_%u.%u ; End of true expr.\n", thread_count, lab_true);
/* If the condition is false or xz (not true), we need the false
expression. If the condition is false, then we ONLY need
the false expression. */
draw_eval_vec4(false_ex);
fprintf(vvp_out, " %%jmp/0 T_%u.%u, %d;\n", thread_count, lab_out, use_flag);
fprintf(vvp_out, " ; End of false expr.\n");
/* Here, the condition is not true or false, it is xz. Both
the true and false expressions have been pushed onto the
stack, we just need to blend the bits. */
fprintf(vvp_out, " %%blend;\n");
fprintf(vvp_out, "T_%u.%u;\n", thread_count, lab_out);
clr_flag(use_flag);
}
