From: Matthew Daiter <mdaiter8121@gmail.com>
Date: Wed, 8 May 2019 03:04:28 +0000 (-0500)
Subject: Minor optimization to get_attribute_bool
X-Git-Tag: yosys-0.9~135^2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6e629d289515e2792fa644fca105998bd9e366de;p=yosys.git

Minor optimization to get_attribute_bool
---

diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 147d378e5..79ff4a6a6 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -218,15 +218,19 @@ void RTLIL::AttrObject::set_bool_attribute(RTLIL::IdString id, bool value)
 {
 	if (value)
 		attributes[id] = RTLIL::Const(1);
-	else if (attributes.count(id))
-		attributes.erase(id);
+	else {
+                const auto it = attributes.find(id);
+                if (it != attributes.end())
+			attributes.erase(it);
+	}
 }
 
 bool RTLIL::AttrObject::get_bool_attribute(RTLIL::IdString id) const
 {
-	if (attributes.count(id) == 0)
+	const auto it = attributes.find(id);
+	if (it == attributes.end())
 		return false;
-	return attributes.at(id).as_bool();
+	return it->second.as_bool();
 }
 
 void RTLIL::AttrObject::set_strpool_attribute(RTLIL::IdString id, const pool<string> &data)