[mlir][NFC] Replace references to Identifier with StringAttr

This is part of the replacement of Identifier with StringAttr.

Differential Revision: https://reviews.llvm.org/D113953

Author: River707

mlir/docs/DataLayout.md

@@ -102,7 +102,7 @@ conceptually a collection of key-value pairs called data layout specification
 _entries_. Data layout specification attributes implement the
 `DataLayoutSpecInterface`, described below. Each entry is itself an attribute
 that implements the `DataLayoutEntryInterface`. Entries have a key, either a
-`Type` or an `Identifier`, and a value. Keys are used to associate entries with
+`Type` or a `StringAttr`, and a value. Keys are used to associate entries with
 specific types or dialects: when handling a data layout properties request, a
 type or a dialect can only see the specification entries relevant to them and
 must go through the supplied `DataLayout` object for any recursive query. This

mlir/docs/Interfaces.md

@@ -327,7 +327,7 @@ operations by overriding the `getRegisteredInterfaceForOp` method :
 
 ```c++
 void *TestDialect::getRegisteredInterfaceForOp(TypeID typeID,
-                                               Identifier opName) {
+                                               StringAttr opName) {
   if (typeID == TypeID::get<ExampleOpInterface>()) {
     if (isSupported(opName))
       return fallbackExampleOpInterface;

mlir/docs/Tutorials/DataFlowAnalysis.md

@@ -137,7 +137,7 @@ struct MetadataLatticeValue {
 
   /// Our value represents the combined metadata, which is originally a
   /// DictionaryAttr, so we use a map.
-  DenseMap<Identifier, Attribute> metadata;
+  DenseMap<StringAttr, Attribute> metadata;
 };
 ```
 

mlir/examples/toy/Ch2/mlir/MLIRGen.cpp

@@ -93,7 +93,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/examples/toy/Ch3/mlir/MLIRGen.cpp

@@ -93,7 +93,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/examples/toy/Ch4/mlir/MLIRGen.cpp

@@ -93,7 +93,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/examples/toy/Ch5/mlir/MLIRGen.cpp

@@ -93,7 +93,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/examples/toy/Ch6/mlir/MLIRGen.cpp

@@ -93,7 +93,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/examples/toy/Ch7/mlir/MLIRGen.cpp

@@ -113,7 +113,7 @@ class MLIRGenImpl {
 
   /// Helper conversion for a Toy AST location to an MLIR location.
   mlir::Location loc(Location loc) {
-    return mlir::FileLineColLoc::get(builder.getIdentifier(*loc.file), loc.line,
+    return mlir::FileLineColLoc::get(builder.getStringAttr(*loc.file), loc.line,
                                      loc.col);
   }
 

mlir/include/mlir/CAPI/IR.h

@@ -17,7 +17,6 @@
 
 #include "mlir/CAPI/Wrap.h"
 #include "mlir/IR/BuiltinOps.h"
-#include "mlir/IR/Identifier.h"
 #include "mlir/IR/MLIRContext.h"
 #include "mlir/IR/Operation.h"