diff --git a/include/mimalloc-atomic.h b/include/mimalloc-atomic.h
index 9f464593..a925a7f1 100644
--- a/include/mimalloc-atomic.h
+++ b/include/mimalloc-atomic.h
@@ -281,16 +281,33 @@ static inline void mi_atomic_yield(void) {
 static inline void mi_atomic_yield(void) {
   YieldProcessor();
 }
+#elif defined(__SSE2__)
+#include <emmintrin.h>
+static inline void mi_atomic_yield(void) {
+  _mm_pause();
+}
 #elif (defined(__GNUC__) || defined(__clang__)) && \
-      (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) && __ARM_ARCH__ >= 7) || defined(__aarch64__))
+      (defined(__x86_64__) || defined(__i386__) || (defined(__arm__) || defined(__armel__) || defined(__ARMEL__) || defined(__aarch64__) || defined(__powerpc__) || defined(__ppc__) || defined(__PPC__))
 #if defined(__x86_64__) || defined(__i386__)
 static inline void mi_atomic_yield(void) {
   __asm__ volatile ("pause" ::: "memory");
 }
-#elif (defined(__arm__) && __ARM_ARCH__ >= 7) || defined(__aarch64__)
+#elif defined(__aarch64__)
+static inline void mi_atomic_yield(void) {
+  asm volatile("wfe");
+}
+#elif (defined(__arm__) && __ARM_ARCH__ >= 7)
 static inline void mi_atomic_yield(void) {
   __asm__ volatile("yield" ::: "memory");
 }
+#elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)
+static inline void mi_atomic_yield(void) {
+  __asm__ __volatile__ ("or 27,27,27" ::: "memory");
+}
+#elif defined(__armel__) || defined(__ARMEL__)
+static inline void mi_atomic_yield(void) {
+  asm volatile ("nop" ::: "memory");
+}
 #endif
 #elif defined(__sun)
 // Fallback for other archs