[mlir][tensor] NFC: name various Transforms/ files consistently

Use a suffix to make clear what the contents inside each file
are.

Reviewed By: ThomasRaoux

Differential Revision: https://reviews.llvm.org/D134202

Author: antiagainst

mlir/lib/Dialect/Tensor/Transforms/CMakeLists.txt

@@ -1,10 +1,10 @@
 add_mlir_dialect_library(MLIRTensorTransforms
   BufferizableOpInterfaceImpl.cpp
   Bufferize.cpp
-  ExtractSliceFromReshape.cpp
+  ExtractSliceFromReshapeUtils.cpp
   MergeConsecutiveInsertExtractSlicePatterns.cpp
-  SplitPadding.cpp
-  SwapExtractSliceWithProducer.cpp
+  SplitPaddingPatterns.cpp
+  SwapExtractSliceWithProducerPatterns.cpp
 
   ADDITIONAL_HEADER_DIRS
   ${MLIR_MAIN_INCLUDE_DIR}/mlir/Dialect/Tensor/Transforms

mlir/lib/Dialect/Tensor/Transforms/ExtractSliceFromReshape.cpp renamed to mlir/lib/Dialect/Tensor/Transforms/ExtractSliceFromReshapeUtils.cpp

@@ -1,4 +1,4 @@
-//===- ExtractSliceFromReshape.cpp - Slice reshape rewrites-------*- C++-*-===//
+//===- ExtractSliceFromReshapeUtils.cpp - Slice reshape rewrites ----------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

mlir/lib/Dialect/Tensor/Transforms/SplitPadding.cpp renamed to mlir/lib/Dialect/Tensor/Transforms/SplitPaddingPatterns.cpp

@@ -1,4 +1,4 @@
-//===- SplitPadding.cpp - Splitting tensor.pad Op -------------------------===//
+//===- SplitPaddingPatterns.cpp - Splitting tensor.pad Op -----------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

mlir/lib/Dialect/Tensor/Transforms/SwapExtractSliceWithProducer.cpp renamed to mlir/lib/Dialect/Tensor/Transforms/SwapExtractSliceWithProducerPatterns.cpp

@@ -1,4 +1,4 @@
-//===- SwapExtractSliceWithProducer.cpp - Swapping `tensor.extract_slice` ---=//
+//===- SwapExtractSliceWithProducerPatterns.cpp ---------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.