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Remove redundant lpm_output

This commit is contained in:
Nick Gasson 2008-07-29 13:08:13 +01:00
parent 680c6f0503
commit d94dac28a8
2 changed files with 8 additions and 32 deletions
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39
tgt-vhdl/lpm.cc
View File

@ -40,36 +40,6 @@ static vhdl_expr *part_select_base(vhdl_scope *scope, ivl_lpm_t lpm)
return off->cast(&integer);
}
vhdl_var_ref *lpm_output(vhdl_scope *scope, ivl_lpm_t lpm)
{
vhdl_var_ref *out = nexus_to_var_ref(scope, ivl_lpm_q(lpm, 0));
if (NULL == out) {
vhdl_type *type =
vhdl_type::type_for(ivl_lpm_width(lpm),
ivl_lpm_signed(lpm) != 0);
string name("LPM");
name += ivl_lpm_basename(lpm);
name += "_Out";
if (!scope->have_declared(name)) {
scope->add_decl
(new vhdl_signal_decl(name.c_str(), new vhdl_type(*type)));
}
out = new vhdl_var_ref(name.c_str(), type);
}
if (ivl_lpm_type(lpm) == IVL_LPM_PART_PV) {
vhdl_expr *off = part_select_base(scope, lpm);
assert(off);
out->set_slice(off, ivl_lpm_width(lpm) - 1);
}
return out;
}
static vhdl_expr *concat_lpm_to_expr(vhdl_scope *scope, ivl_lpm_t lpm)
{
vhdl_type *result_type =
@ -295,7 +265,14 @@ int draw_lpm(vhdl_arch *arch, ivl_lpm_t lpm)
if (NULL == f)
return 0;
vhdl_var_ref *out = lpm_output(arch->get_scope(), lpm);
vhdl_var_ref *out = nexus_to_var_ref(arch->get_scope(), ivl_lpm_q(lpm, 0));
if (ivl_lpm_type(lpm) == IVL_LPM_PART_PV) {
vhdl_expr *off = part_select_base(arch->get_scope(), lpm);
assert(off);
out->set_slice(off, ivl_lpm_width(lpm) - 1);
}
arch->add_stmt(new vhdl_cassign_stmt(out, f));
return 0;

1
tgt-vhdl/vhdl_target.h
View File

@ -23,7 +23,6 @@ int draw_lpm(vhdl_arch *arch, ivl_lpm_t lpm);
vhdl_expr *translate_expr(ivl_expr_t e);
vhdl_expr *translate_time_expr(ivl_expr_t e);
vhdl_var_ref *lpm_output(vhdl_scope *scope, ivl_lpm_t lpm);
void remember_entity(vhdl_entity *ent);
vhdl_entity *find_entity(const string &tname);