Pooled allocation of RandomX VMs

+0.5% speedup on Zen2 when the whole L3 cache is used (16 threads on 3700X/3800X, 32 threads on 3950X).

src/crypto/randomx/vm_compiled.hpp

@@ -41,16 +41,8 @@ namespace randomx {
 	class CompiledVm : public VmBase<softAes>
 	{
 	public:
-		void* operator new(size_t size) {
-			void* ptr = AlignedAllocator<CacheLineSize>::allocMemory(size);
-			if (ptr == nullptr)
-				throw std::bad_alloc();
-			return ptr;
-		}
-
-		void operator delete(void* ptr) {
-			AlignedAllocator<CacheLineSize>::freeMemory(ptr, sizeof(CompiledVm));
-		}
+		void* operator new(size_t, void* ptr) { return ptr; }
+		void operator delete(void*) {}
 
 		void setDataset(randomx_dataset* dataset) override;
 		void run(void* seed) override;