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diff -up firefox-53.0/layout/base/nsIPresShell.h.1354671 firefox-53.0/layout/base/nsIPresShell.h
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--- firefox-53.0/layout/base/nsIPresShell.h.1354671	2017-04-27 13:07:43.808653320 +0200
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+++ firefox-53.0/layout/base/nsIPresShell.h	2017-04-27 13:09:40.404427641 +0200
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@@ -212,7 +212,7 @@ public:
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    * to the same aSize value.  AllocateFrame is infallible and will abort
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    * on out-of-memory.
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    */
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-  void* AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize)
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+  void* __attribute__((optimize("no-lifetime-dse"))) AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize)
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   {
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     void* result = mFrameArena.AllocateByFrameID(aID, aSize);
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     RecordAlloc(result);