From e4f3979ec8dd12fef1f44e78733917980045def0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?D=C3=A1niel=20Buga?= <bugadani@gmail.com>
Date: Mon, 14 Aug 2023 16:46:02 +0200
Subject: [PATCH] Don't check context if only thread-mode is enabled

---
 embassy-executor/src/arch/cortex_m.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/embassy-executor/src/arch/cortex_m.rs b/embassy-executor/src/arch/cortex_m.rs
index 8fe5644d..0806a22a 100644
--- a/embassy-executor/src/arch/cortex_m.rs
+++ b/embassy-executor/src/arch/cortex_m.rs
@@ -10,7 +10,8 @@ fn __pender(context: *mut ()) {
         let context = context as usize;
 
         #[cfg(feature = "executor-thread")]
-        if context == THREAD_PENDER {
+        // Try to make Rust optimize the branching away if we only use thread mode.
+        if !cfg!(feature = "executor-interrupt") || context == THREAD_PENDER {
             core::arch::asm!("sev");
             return;
         }