Improved JitAllocator to not reiterate the whole block on every allocation

src/asmjit/core/jitallocator.h

@@ -207,12 +207,12 @@ public:
   //! Release a memory returned by `alloc()`.
   //!
   //! \remarks This function is thread-safe.
-  ASMJIT_API Error release(void* ro) noexcept;
+  ASMJIT_API Error release(void* roPtr) noexcept;
 
   //! Free extra memory allocated with `p` by restricting it to `newSize` size.
   //!
   //! \remarks This function is thread-safe.
-  ASMJIT_API Error shrink(void* ro, size_t newSize) noexcept;
+  ASMJIT_API Error shrink(void* roPtr, size_t newSize) noexcept;
 
   //! \}
 

src/asmjit/core/support.h

@@ -1165,6 +1165,30 @@ public:
   T _bitWord;
 };
 
+// ============================================================================
+// [asmjit::Support - BitWordFlipIterator]
+// ============================================================================
+
+template<typename T>
+class BitWordFlipIterator {
+public:
+  inline explicit BitWordFlipIterator(T bitWord) noexcept
+    : _bitWord(bitWord) {}
+
+  inline void init(T bitWord) noexcept { _bitWord = bitWord; }
+  inline bool hasNext() const noexcept { return _bitWord != 0; }
+
+  inline uint32_t nextAndFlip() noexcept {
+    ASMJIT_ASSERT(_bitWord != 0);
+    uint32_t index = ctz(_bitWord);
+    _bitWord ^= T(1u) << index;
+    return index;
+  }
+
+  T _bitWord;
+  T _xorMask;
+};
+
 // ============================================================================
 // [asmjit::Support - BitVectorOps]
 // ============================================================================