});
}
+//===----------------------------------------------------------------------===//
+// RoundEvenOp folder
+//===----------------------------------------------------------------------===//
+
+OpFoldResult math::RoundEvenOp::fold(ArrayRef<Attribute> operands) {
+ return constFoldUnaryOpConditional<FloatAttr>(
+ operands, [](const APFloat &a) -> Optional<APFloat> {
+ switch (a.getSizeInBits(a.getSemantics())) {
+ case 64:
+ return APFloat(roundeven(a.convertToDouble()));
+ case 32:
+ return APFloat(roundevenf(a.convertToFloat()));
+ default:
+ return {};
+ }
+ });
+}
+
/// Materialize an integer or floating point constant.
Operation *math::MathDialect::materializeConstant(OpBuilder &builder,
Attribute value, Type type,
%0 = math.cos %v1 : vector<4xf32>
return %0 : vector<4xf32>
}
+
+// CHECK-LABEL: @roundeven_fold
+// CHECK-NEXT: %[[cst:.+]] = arith.constant 2.000000e+00 : f32
+// CHECK-NEXT: return %[[cst]]
+func.func @roundeven_fold() -> f32 {
+ %c = arith.constant 1.5 : f32
+ %r = math.roundeven %c : f32
+ return %r : f32
+}
+
+// CHECK-LABEL: @roundeven_fold_vec
+// CHECK-NEXT: %[[cst:.+]] = arith.constant dense<[0.000000e+00, -0.000000e+00, 2.000000e+00, -2.000000e+00]> : vector<4xf32>
+// CHECK-NEXT: return %[[cst]]
+func.func @roundeven_fold_vec() -> (vector<4xf32>) {
+ %v1 = arith.constant dense<[0.5, -0.5, 1.5, -1.5]> : vector<4xf32>
+ %0 = math.roundeven %v1 : vector<4xf32>
+ return %0 : vector<4xf32>
+}