[arm] [arm64] Add optional operators Float32Neg and Float64Neg.

test/cctest/compiler/test-run-machops.cc

Index: test/cctest/compiler/test-run-machops.cc
diff --git a/test/cctest/compiler/test-run-machops.cc b/test/cctest/compiler/test-run-machops.cc
index 6d681bca85f04272fbd0758ff1d7b9c980fdd8c7..6f8feb75d70c312b5ff953f0eb985d61525e0898 100644
--- a/test/cctest/compiler/test-run-machops.cc
+++ b/test/cctest/compiler/test-run-machops.cc
@@ -3568,6 +3568,12 @@ TEST(RunFloat32Sub) {
   }
 }
 
+TEST(RunFloat32Neg) {
+  BufferedRawMachineAssemblerTester<float> m(MachineType::Float32());
+  if (!m.machine()->Float32Neg().IsSupported()) return;
+  m.Return(m.AddNode(m.machine()->Float32Neg().op(), m.Parameter(0)));
+  FOR_FLOAT32_INPUTS(i) { CHECK_FLOAT_EQ(-0.0f - *i, m.Call(*i)); }
+}
 
 TEST(RunFloat32Mul) {
   BufferedRawMachineAssemblerTester<float> m(MachineType::Float32(),
@@ -3612,6 +3618,12 @@ TEST(RunFloat64Sub) {
   }
 }
 
+TEST(RunFloat64Neg) {
+  BufferedRawMachineAssemblerTester<double> m(MachineType::Float64());
+  if (!m.machine()->Float64Neg().IsSupported()) return;
+  m.Return(m.AddNode(m.machine()->Float64Neg().op(), m.Parameter(0)));
+  FOR_FLOAT64_INPUTS(i) { CHECK_FLOAT_EQ(-0.0 - *i, m.Call(*i)); }
+}
 
 TEST(RunFloat64Mul) {
   BufferedRawMachineAssemblerTester<double> m(MachineType::Float64(),