[mlir][Target][Cpp] Remove unused dialects (#85102)

Removes linking and registering dialects that are not support any more.

mlir/lib/Target/Cpp/CMakeLists.txt

@@ -10,8 +10,6 @@ add_mlir_translation_library(MLIRTargetCpp
   MLIREmitCDialect
   MLIRFuncDialect
   MLIRIR
-  MLIRMathDialect
-  MLIRSCFDialect
   MLIRSupport
   MLIRTranslateLib
   )

mlir/lib/Target/Cpp/TranslateRegistration.cpp

@@ -9,8 +9,6 @@
 #include "mlir/Dialect/ControlFlow/IR/ControlFlow.h"
 #include "mlir/Dialect/EmitC/IR/EmitC.h"
 #include "mlir/Dialect/Func/IR/FuncOps.h"
-#include "mlir/Dialect/Math/IR/Math.h"
-#include "mlir/Dialect/SCF/IR/SCF.h"
 #include "mlir/IR/BuiltinOps.h"
 #include "mlir/IR/Dialect.h"
 #include "mlir/Target/Cpp/CppEmitter.h"
@@ -42,9 +40,7 @@ void registerToCppTranslation() {
         // clang-format off
         registry.insert<cf::ControlFlowDialect,
                         emitc::EmitCDialect,
-                        func::FuncDialect,
-                        math::MathDialect,
-                        scf::SCFDialect>();
+                        func::FuncDialect>();
         // clang-format on
       });
 }

mlir/test/Target/Cpp/invalid.mlir

@@ -10,10 +10,10 @@ func.func @multiple_blocks() {
 
 // -----
 
-func.func @unsupported_std_op(%arg0: f64) -> f64 {
-  // expected-error@+1 {{'math.absf' op unable to find printer for op}}
-  %0 = math.absf %arg0 : f64
-  return %0 : f64
+func.func @unsupported_op(%arg0: i1) {
+  // expected-error@+1 {{'cf.assert' op unable to find printer for op}}
+  cf.assert %arg0, "assertion foo"
+  return
 }
 
 // -----

utils/bazel/llvm-project-overlay/mlir/BUILD.bazel

@@ -1773,8 +1773,6 @@ cc_library(
         ":EmitCDialect",
         ":FuncDialect",
         ":IR",
-        ":MathDialect",
-        ":SCFDialect",
         ":Support",
         ":TranslateLib",
         "//llvm:Support",