Bug 510095 - allocate LirBuffer with Allocator instead of GC, don't extend GCFinalizedObject, r=gal.

--HG--
extra : rebase_source : 42aa431e0d795351860f0794ea0392e1f663132b

js/src/jstracer.cpp

@@ -6428,7 +6428,7 @@ js_InitJIT(JSTraceMonitor *tm)
         Fragmento* fragmento = new (&gc) Fragmento(core, &js_LogController, 32, tm->codeAlloc);
         verbose_only(fragmento->labels = new (alloc) LabelMap(alloc, &js_LogController);)
         tm->fragmento = fragmento;
-        tm->lirbuf = new (&gc) LirBuffer(alloc);
+        tm->lirbuf = new LirBuffer(alloc);
 #ifdef DEBUG
         tm->lirbuf->names = new (alloc) LirNameMap(alloc, tm->fragmento->labels);
 #endif
@@ -6457,7 +6457,7 @@ js_InitJIT(JSTraceMonitor *tm)
         Fragmento* fragmento = new (&gc) Fragmento(core, &js_LogController, 32, tm->reCodeAlloc);
         verbose_only(fragmento->labels = new (reAlloc) LabelMap(reAlloc, &js_LogController);)
         tm->reFragmento = fragmento;
-        tm->reLirBuf = new (&gc) LirBuffer(reAlloc);
+        tm->reLirBuf = new LirBuffer(reAlloc);
 #ifdef DEBUG
         tm->reLirBuf->names = new (reAlloc) LirNameMap(reAlloc, fragmento->labels);
 #endif

js/src/nanojit/Fragmento.h

@@ -166,9 +166,10 @@ namespace nanojit
             DWB(Fragment*) parent;
             DWB(Fragment*) first;
             DWB(Fragment*) peer;
-            DWB(LirBuffer*) lirbuf;
-            LIns*            lastIns;
-            SideExit*       spawnedFrom;
+            LirBuffer*     lirbuf;
+            LIns*          lastIns;
+            SideExit*      spawnedFrom;
+            GuardRecord*   outbound;
 
             TraceKind kind;
             const void* ip;

js/src/nanojit/LIR.cpp

@@ -120,11 +120,6 @@ namespace nanojit
         clear();
     }
 
-    LirBuffer::~LirBuffer()
-    {
-        clear();
-    }
-
     void LirBuffer::clear()
     {
         // clear the stats, etc

js/src/nanojit/LIR.h

@@ -1081,11 +1081,10 @@ namespace nanojit
         LIns* insGuard(LOpcode op, LInsp cond, LIns *x);
     };
 
-    class LirBuffer : public GCFinalizedObject
+    class LirBuffer
     {
         public:
             LirBuffer(Allocator&);
-            ~LirBuffer();
             void        clear();
             uintptr_t   makeRoom(size_t szB);   // make room for an instruction
 
@@ -1137,7 +1136,7 @@ namespace nanojit
 
     class LirBufWriter : public LirWriter
     {
-        DWB(LirBuffer*)    _buf;        // underlying buffer housing the instructions
+        LirBuffer*    _buf;        // underlying buffer housing the instructions
 
         public:
             LirBufWriter(LirBuffer* buf)