Index: lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -4425,6 +4425,14 @@
   }
   return res;
 }
+#if SANITIZER_PPC
+// On PowerPC, we also need to intercept __tls_get_addr_opt, which has
+// ostly the same semantics as __tls_get_addr, but its presence enables
+// some optimizations in linker (which are safe to ignore here).
+extern "C" __attribute__((alias("__interceptor___tls_get_addr"),
+                          visibility("default")))
+void *__tls_get_addr_opt(void *arg);
+#endif
 #else // SANITIZER_S390
 // On s390, we have to intercept two functions here:
 // - __tls_get_addr_internal, which is a glibc-internal function that is like