add helpfer function CIRGenBuilderTy::getConstFP

Author: ghehg

clang/lib/CIR/CodeGen/CIRGenBuilder.cpp

@@ -67,4 +67,14 @@ mlir::cir::ConstantOp CIRGenBuilderTy::getConstInt(mlir::Location loc,
   return create<mlir::cir::ConstantOp>(loc, intTy,
                                        mlir::cir::IntAttr::get(t, C));
 }
+
+mlir::cir::ConstantOp CIRGenBuilderTy::getConstFP(mlir::Location loc,
+                                                  mlir::Type t,
+                                                  llvm::APFloat fpVal) {
+  assert((mlir::isa<mlir::cir::SingleType, mlir::cir::DoubleType>(t)) &&
+         "expected mlir::cir::SingleType or mlir::cir::DoubleType");
+  return create<mlir::cir::ConstantOp>(loc, t,
+                                       getAttr<mlir::cir::FPAttr>(t, fpVal));
+}
+
 } // namespace cir

clang/lib/CIR/CodeGen/CIRGenBuilder.h

@@ -536,6 +536,10 @@ class CIRGenBuilderTy : public CIRBaseBuilderTy {
 
   mlir::cir::ConstantOp getConstInt(mlir::Location loc, mlir::Type t,
                                     uint64_t C);
+
+  mlir::cir::ConstantOp getConstFP(mlir::Location loc, mlir::Type t,
+                                   llvm::APFloat fpVal);
+
   /// Create constant nullptr for pointer-to-data-member type ty.
   mlir::cir::ConstantOp getNullDataMemberPtr(mlir::cir::DataMemberType ty,
                                              mlir::Location loc) {

clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp

@@ -320,9 +320,8 @@ RValue CIRGenFunction::buildBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
       // it is hard to imagine a builtin function evaluates to
       // a value that over/underflows its own defined type.
       mlir::Type resTy = getCIRType(E->getType());
-      return RValue::get(builder.create<mlir::cir::ConstantOp>(
-          getLoc(E->getExprLoc()), resTy,
-          builder.getAttr<mlir::cir::FPAttr>(resTy, Result.Val.getFloat())));
+      return RValue::get(builder.getConstFP(getLoc(E->getExprLoc()), resTy,
+                                            Result.Val.getFloat()));
     }
   }