From ae219cb8f9b9d3a023599ce4a6c3632276b26016 Mon Sep 17 00:00:00 2001
From: Robert O'Callahan <rocallahan@google.com>
Date: Thu, 16 Oct 2025 04:05:56 +0000
Subject: [PATCH] Make IdString::contains take std::string_view so we avoid a
 strlen when the parameter is a string constant

---
 kernel/rtlil.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 6992b45cf..b65b9b6eb 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -415,8 +415,8 @@ struct RTLIL::IdString
 		return compare(sz - suffix.size(), suffix.size(), suffix.data()) == 0;
 	}
 
-	bool contains(const char* str) const {
-		return strstr(c_str(), str);
+	bool contains(std::string_view s) const {
+		return std::string_view(c_str()).find(s) != std::string::npos;
 	}
 
 	size_t size() const {