Alex Zinenko e9493cf14d Port alloc/dealloc LLVM IR conversion into the LLVM IR dialect lowering ... Implement the lowering of memref allocation and deallocation standard operations into the LLVM IR dialect. This largely follows the existing mechanism in MLIR-to-LLVM-IR translation for the sake of compatibility. A memref value is transformed into a memref descriptor value which holds the pointer to the underlying data buffer and the dynamic memref sizes. The buffer is allocated using `malloc` and freed using `free`. The lowering inserts declarations of these functions if necessary. Memref descriptors are values of the LLVM IR structure type wrapped into an MLIR LLVM dialect type. The pointer to the buffer and the individual sizes are accessed using `extractvalue` and `insertvalue` LLVM IR instructions. PiperOrigin-RevId: 232719419		2019-03-29 16:18:14 -07:00
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IR	Change derived type storage objects to define an 'operator==(const KeyTy &)' instead of converting to the KeyTy. This allows for handling cases where the KeyTy does not provide an equality operator on itself.	2019-03-29 15:19:11 -07:00
Transforms	Port alloc/dealloc LLVM IR conversion into the LLVM IR dialect lowering	2019-03-29 16:18:14 -07:00