[mlir][Transforms][NFC] Dialect conversion: Rename internal functions (llvm#145018)

Rename a few internal functions: drop the `notify` prefix, which
incorrectly suggests that the function is a listener callback function.

Author: matthias-springer

mlir/lib/Transforms/Utils/DialectConversion.cpp

@@ -896,7 +896,7 @@ struct ConversionPatternRewriterImpl : public RewriterBase::Listener {
   bool wasOpReplaced(Operation *op) const;
 
   //===--------------------------------------------------------------------===//
-  // Type Conversion
+  // IR Rewrites / Type Conversion
   //===--------------------------------------------------------------------===//
 
   /// Convert the types of block arguments within the given region.
@@ -916,6 +916,22 @@ struct ConversionPatternRewriterImpl : public RewriterBase::Listener {
       const TypeConverter *converter,
       TypeConverter::SignatureConversion &signatureConversion);
 
+  /// Replace the results of the given operation with the given values and
+  /// erase the operation.
+  ///
+  /// There can be multiple replacement values for each result (1:N
+  /// replacement). If the replacement values are empty, the respective result
+  /// is dropped and a source materialization is built if the result still has
+  /// uses.
+  void replaceOp(Operation *op, SmallVector<SmallVector<Value>> &&newValues);
+
+  /// Erase the given block and its contents.
+  void eraseBlock(Block *block);
+
+  /// Inline the source block into the destination block before the given
+  /// iterator.
+  void inlineBlockBefore(Block *source, Block *dest, Block::iterator before);
+
   //===--------------------------------------------------------------------===//
   // Materializations
   //===--------------------------------------------------------------------===//
@@ -952,21 +968,10 @@ struct ConversionPatternRewriterImpl : public RewriterBase::Listener {
   void notifyOperationInserted(Operation *op,
                                OpBuilder::InsertPoint previous) override;
 
-  /// Notifies that an op is about to be replaced with the given values.
-  void notifyOpReplaced(Operation *op,
-                        SmallVector<SmallVector<Value>> &&newValues);
-
-  /// Notifies that a block is about to be erased.
-  void notifyBlockIsBeingErased(Block *block);
-
   /// Notifies that a block was inserted.
   void notifyBlockInserted(Block *block, Region *previous,
                            Region::iterator previousIt) override;
 
-  /// Notifies that a block is being inlined into another block.
-  void notifyBlockBeingInlined(Block *block, Block *srcBlock,
-                               Block::iterator before);
-
   /// Notifies that a pattern match failed for the given reason.
   void
   notifyMatchFailure(Location loc,
@@ -1548,7 +1553,7 @@ void ConversionPatternRewriterImpl::notifyOperationInserted(
   appendRewrite<MoveOperationRewrite>(op, previous.getBlock(), prevOp);
 }
 
-void ConversionPatternRewriterImpl::notifyOpReplaced(
+void ConversionPatternRewriterImpl::replaceOp(
     Operation *op, SmallVector<SmallVector<Value>> &&newValues) {
   assert(newValues.size() == op->getNumResults());
   assert(!ignoredOps.contains(op) && "operation was already replaced");
@@ -1599,8 +1604,14 @@ void ConversionPatternRewriterImpl::notifyOpReplaced(
   op->walk([&](Operation *op) { replacedOps.insert(op); });
 }
 
-void ConversionPatternRewriterImpl::notifyBlockIsBeingErased(Block *block) {
+void ConversionPatternRewriterImpl::eraseBlock(Block *block) {
   appendRewrite<EraseBlockRewrite>(block);
+
+  // Unlink the block from its parent region. The block is kept in the rewrite
+  // object and will be actually destroyed when rewrites are applied. This
+  // allows us to keep the operations in the block live and undo the removal by
+  // re-inserting the block.
+  block->getParent()->getBlocks().remove(block);
 }
 
 void ConversionPatternRewriterImpl::notifyBlockInserted(
@@ -1628,9 +1639,10 @@ void ConversionPatternRewriterImpl::notifyBlockInserted(
   appendRewrite<MoveBlockRewrite>(block, previous, prevBlock);
 }
 
-void ConversionPatternRewriterImpl::notifyBlockBeingInlined(
-    Block *block, Block *srcBlock, Block::iterator before) {
-  appendRewrite<InlineBlockRewrite>(block, srcBlock, before);
+void ConversionPatternRewriterImpl::inlineBlockBefore(Block *source,
+                                                      Block *dest,
+                                                      Block::iterator before) {
+  appendRewrite<InlineBlockRewrite>(dest, source, before);
 }
 
 void ConversionPatternRewriterImpl::notifyMatchFailure(
@@ -1673,7 +1685,7 @@ void ConversionPatternRewriter::replaceOp(Operation *op, ValueRange newValues) {
       llvm::map_to_vector(newValues, [](Value v) -> SmallVector<Value> {
         return v ? SmallVector<Value>{v} : SmallVector<Value>();
       });
-  impl->notifyOpReplaced(op, std::move(newVals));
+  impl->replaceOp(op, std::move(newVals));
 }
 
 void ConversionPatternRewriter::replaceOpWithMultiple(
@@ -1684,7 +1696,7 @@ void ConversionPatternRewriter::replaceOpWithMultiple(
     impl->logger.startLine()
         << "** Replace : '" << op->getName() << "'(" << op << ")\n";
   });
-  impl->notifyOpReplaced(op, std::move(newValues));
+  impl->replaceOp(op, std::move(newValues));
 }
 
 void ConversionPatternRewriter::eraseOp(Operation *op) {
@@ -1693,7 +1705,7 @@ void ConversionPatternRewriter::eraseOp(Operation *op) {
         << "** Erase   : '" << op->getName() << "'(" << op << ")\n";
   });
   SmallVector<SmallVector<Value>> nullRepls(op->getNumResults(), {});
-  impl->notifyOpReplaced(op, std::move(nullRepls));
+  impl->replaceOp(op, std::move(nullRepls));
 }
 
 void ConversionPatternRewriter::eraseBlock(Block *block) {
@@ -1704,12 +1716,7 @@ void ConversionPatternRewriter::eraseBlock(Block *block) {
   for (Operation &op : *block)
     eraseOp(&op);
 
-  // Unlink the block from its parent region. The block is kept in the rewrite
-  // object and will be actually destroyed when rewrites are applied. This
-  // allows us to keep the operations in the block live and undo the removal by
-  // re-inserting the block.
-  impl->notifyBlockIsBeingErased(block);
-  block->getParent()->getBlocks().remove(block);
+  impl->eraseBlock(block);
 }
 
 Block *ConversionPatternRewriter::applySignatureConversion(
@@ -1797,7 +1804,7 @@ void ConversionPatternRewriter::inlineBlockBefore(Block *source, Block *dest,
   bool fastPath = !impl->config.listener;
 
   if (fastPath)
-    impl->notifyBlockBeingInlined(dest, source, before);
+    impl->inlineBlockBefore(source, dest, before);
 
   // Replace all uses of block arguments.
   for (auto it : llvm::zip(source->getArguments(), argValues))