Reverted the mainline PCEM CPU flat segment speedup commit - it's still buggy (Duke Nukem 3D and Little Big Adventure 2 like crashing), I'll recommit it when Sarah Walker fixes the bugs.

src/CPU/codegen.h

@@ -35,9 +35,6 @@
 
 typedef struct codeblock_t
 {
-	uint64_t page_mask, page_mask2;
-	uint64_t cmp;
-
         /*Previous and next pointers, for the codeblock list associated with
           each physical page. Two sets of pointers, as a codeblock can be
           present in two pages.*/
@@ -48,19 +45,22 @@ typedef struct codeblock_t
           fails.*/
         struct codeblock_t *parent, *left, *right;
         
-        int pnt;
-        int ins;
-        
-        int was_recompiled;
-        int TOP;
-
         uint32_t pc;
         uint32_t _cs;
         uint32_t endpc;
         uint32_t phys, phys_2;
-	uint32_t status;
+        uint32_t use32;
+        int stack32;
+        int pnt;
+        int ins;
+        uint64_t page_mask, page_mask2;
+        
+        int was_recompiled;
         uint32_t flags;
-
+        int TOP;
+        
+        uint64_t cmp;
+        
         uint8_t data[2048];
 } codeblock_t;