1 files changed, 70 insertions, 0 deletions
diff --git a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
new file mode 100644
index 0000000..b802705
--- /dev/null
+++ b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Emit Expr nodes with scalar CIR types as CIR code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CIRGenFunction.h"
+
+#include "clang/AST/Expr.h"
+#include "clang/AST/StmtVisitor.h"
+
+#include "mlir/IR/Value.h"
+
+#include <cassert>
+
+using namespace clang;
+using namespace clang::CIRGen;
+
+namespace {
+
+class ScalarExprEmitter : public StmtVisitor<ScalarExprEmitter, mlir::Value> {
+  CIRGenFunction &cgf;
+  CIRGenBuilderTy &builder;
+  bool ignoreResultAssign;
+
+public:
+  ScalarExprEmitter(CIRGenFunction &cgf, CIRGenBuilderTy &builder,
+                    bool ira = false)
+      : cgf(cgf), builder(builder), ignoreResultAssign(ira) {}
+
+  //===--------------------------------------------------------------------===//
+  //                            Visitor Methods
+  //===--------------------------------------------------------------------===//
+
+  mlir::Value Visit(Expr *e) {
+    return StmtVisitor<ScalarExprEmitter, mlir::Value>::Visit(e);
+  }
+
+  mlir::Value VisitStmt(Stmt *s) {
+    llvm_unreachable("Statement passed to ScalarExprEmitter");
+  }
+
+  mlir::Value VisitExpr(Expr *e) {
+    cgf.getCIRGenModule().errorNYI(
+        e->getSourceRange(), "scalar expression kind: ", e->getStmtClassName());
+    return {};
+  }
+
+  mlir::Value VisitIntegerLiteral(const IntegerLiteral *e) {
+    mlir::Type type = cgf.convertType(e->getType());
+    return builder.create<cir::ConstantOp>(
+        cgf.getLoc(e->getExprLoc()), type,
+        builder.getAttr<cir::IntAttr>(type, e->getValue()));
+  }
+};
+} // namespace
+
+/// Emit the computation of the specified expression of scalar type.
+mlir::Value CIRGenFunction::emitScalarExpr(const Expr *e) {
+  assert(e && hasScalarEvaluationKind(e->getType()) &&
+         "Invalid scalar expression to emit");
+
+  return ScalarExprEmitter(*this, builder).Visit(const_cast<Expr *>(e));
+}