Remove obsolete `getAsmResultNames` from OpAsmDialectInterface

This is superseded by the same method on OpAsmOpInterface, which is
available on the Dialect through the Fallback mechanism,

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D117750

mlir/include/mlir/IR/OpImplementation.h

@@ -1350,10 +1350,6 @@ public:
     return AliasResult::NoAlias;
   }
 
-  /// Get a special name to use when printing the given operation. See
-  /// OpAsmInterface.td#getAsmResultNames for usage details and documentation.
-  virtual void getAsmResultNames(Operation *op,
-                                 OpAsmSetValueNameFn setNameFn) const {}
 };
 } // namespace mlir
 

mlir/lib/IR/AsmPrinter.cpp

@@ -797,8 +797,7 @@ public:
   /// A sentinel value used for values with names set.
   enum : unsigned { NameSentinel = ~0U };
 
-  SSANameState(Operation *op, const OpPrintingFlags &printerFlags,
-               DialectInterfaceCollection<OpAsmDialectInterface> &interfaces);
+  SSANameState(Operation *op, const OpPrintingFlags &printerFlags);
 
   /// Print the SSA identifier for the given value to 'stream'. If
   /// 'printResultNo' is true, it also presents the result number ('#' number)
@@ -866,15 +865,12 @@ private:
   /// These are the printing flags.  They control, eg., whether to print in
   /// generic form.
   OpPrintingFlags printerFlags;
-
-  DialectInterfaceCollection<OpAsmDialectInterface> &interfaces;
 };
 } // namespace
 
 SSANameState::SSANameState(
-    Operation *op, const OpPrintingFlags &printerFlags,
-    DialectInterfaceCollection<OpAsmDialectInterface> &interfaces)
-    : printerFlags(printerFlags), interfaces(interfaces) {
+    Operation *op, const OpPrintingFlags &printerFlags)
+    : printerFlags(printerFlags) {
   llvm::SaveAndRestore<unsigned> valueIDSaver(nextValueID);
   llvm::SaveAndRestore<unsigned> argumentIDSaver(nextArgumentID);
   llvm::SaveAndRestore<unsigned> conflictIDSaver(nextConflictID);
@@ -1071,8 +1067,6 @@ void SSANameState::numberValuesInOp(Operation &op) {
   if (!printerFlags.shouldPrintGenericOpForm()) {
     if (OpAsmOpInterface asmInterface = dyn_cast<OpAsmOpInterface>(&op))
       asmInterface.getAsmResultNames(setResultNameFn);
-    else if (auto *asmInterface = interfaces.getInterfaceFor(op.getDialect()))
-      asmInterface->getAsmResultNames(&op, setResultNameFn);
   }
 
   // If the first result wasn't numbered, give it a default number.
@@ -1172,7 +1166,7 @@ class AsmStateImpl {
 public:
   explicit AsmStateImpl(Operation *op, const OpPrintingFlags &printerFlags,
                         AsmState::LocationMap *locationMap)
-      : interfaces(op->getContext()), nameState(op, printerFlags, interfaces),
+      : interfaces(op->getContext()), nameState(op, printerFlags),
         printerFlags(printerFlags), locationMap(locationMap) {}
 
   /// Initialize the alias state to enable the printing of aliases.

mlir/test/IR/parser.mlir

@@ -1209,18 +1209,15 @@ func private @string_attr_name() attributes {"0 . 0", nested = {"0 . 0"}}
 func private @nested_reference() attributes {test.ref = @some_symbol::@some_nested_symbol }
 
 // CHECK-LABEL: func @custom_asm_names
-func @custom_asm_names() -> (i32, i32, i32, i32, i32, i32, i32) {
+func @custom_asm_names() -> (i32, i32, i32, i32, i32, i32) {
   // CHECK: %[[FIRST:first.*]], %[[MIDDLE:middle_results.*]]:2, %[[LAST:[0-9]+]]
   %0, %1:2, %2 = "test.asm_interface_op"() : () -> (i32, i32, i32, i32)
 
   // CHECK: %[[FIRST_2:first.*]], %[[LAST_2:[0-9]+]]
   %3, %4 = "test.asm_interface_op"() : () -> (i32, i32)
 
-  // CHECK: %[[RESULT:result.*]]
-  %5 = "test.asm_dialect_interface_op"() : () -> (i32)
-
   // CHECK: return %[[FIRST]], %[[MIDDLE]]#0, %[[MIDDLE]]#1, %[[LAST]], %[[FIRST_2]], %[[LAST_2]]
-  return %0, %1#0, %1#1, %2, %3, %4, %5 : i32, i32, i32, i32, i32, i32, i32
+  return %0, %1#0, %1#1, %2, %3, %4 : i32, i32, i32, i32, i32, i32
 }
 
 

mlir/test/lib/Dialect/Test/TestDialect.cpp

@@ -99,12 +99,6 @@ struct TestOpAsmInterface : public OpAsmDialectInterface {
     }
     return AliasResult::NoAlias;
   }
-
-  void getAsmResultNames(Operation *op,
-                         OpAsmSetValueNameFn setNameFn) const final {
-    if (auto asmOp = dyn_cast<AsmDialectInterfaceOp>(op))
-      setNameFn(asmOp, "result");
-  }
 };
 
 struct TestDialectFoldInterface : public DialectFoldInterface {