[flang-commits] [flang] [flang] Lowering FIR memory ops to MemRef dialect (PR #173507)

[Valentin Clement バレンタイン クレメン via flang-commits]

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@@ -0,0 +1,1156 @@
+//===-- FIRToMemRef.cpp - Convert FIR loads and stores to MemRef ---------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This pass lowers FIR dialect memory operations to the MemRef dialect.
+// In particular it:
+//
+//  - Rewrites `fir.alloca` to `memref.alloca`.
+//
+//  - Rewrites `fir.load` / `fir.store` to `memref.load` / `memref.store`.
+//
+//  - Allows FIR and MemRef to coexist by introducing `fir.convert` at
+//    memory-use sites. Memory operations (`memref.load`, `memref.store`,
+//    `memref.reinterpret_cast`, etc.) see MemRef-typed values, while the
+//    original FIR-typed values remain available for non-memory uses. For
+//    example:
+//
+//        %fir_ref = ... : !fir.ref<!fir.array<...>>
+//        %memref = fir.convert %fir_ref
+//                    : !fir.ref<!fir.array<...>> -> memref<...>
+//        %val = memref.load %memref[...] : memref<...>
+//        fir.call @callee(%fir_ref) : (!fir.ref<!fir.array<...>>) -> ()
+//
+//    Here the MemRef-typed value is used for `memref.load`, while the
+//    original FIR-typed value is preserved for `fir.call`.
+//
+//  - Computes shapes, strides, and indices as needed for slices and shifts
+//    and emits `memref.reinterpret_cast` when dynamic layout is required
+//    (TODO: use memref.cast instead).
+//
+//===----------------------------------------------------------------------===//
+
+#include "flang/Optimizer/Transforms/FIRToMemRefTypeConverter.h"
+#include "flang/Optimizer/Transforms/Passes.h"
+
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clementval wrote:

I don't see empty lines in other flang files between group of headers. 

https://github.com/llvm/llvm-project/pull/173507