diff -up firefox-53.0/layout/base/nsIPresShell.h.1354671 firefox-53.0/layout/base/nsIPresShell.h
--- firefox-53.0/layout/base/nsIPresShell.h.1354671	2017-04-27 13:07:43.808653320 +0200
+++ firefox-53.0/layout/base/nsIPresShell.h	2017-04-27 13:09:40.404427641 +0200
@@ -204,7 +204,7 @@
    * to the same aSize value.  AllocateFrame is infallible and will abort
    * on out-of-memory.
    */
-  void* AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
+  void* __attribute__((optimize("no-lifetime-dse"))) AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
     void* result = mFrameArena.AllocateByFrameID(aID, aSize);
     RecordAlloc(result);
     return result;