[turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

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 3c5d57cb31fef1839fdafb5f35d1bae20fc60f6c..a55e1a9f4e2790632613329d1d60fb2c4aaf0a04 100644
--- a/test/cctest/compiler/test-run-machops.cc
+++ b/test/cctest/compiler/test-run-machops.cc
@@ -5438,9 +5438,9 @@ TEST(RunTryTruncateFloat64ToInt64WithCheck) {
 }
 
 
-TEST(RunTruncateFloat32ToUint64) {
+TEST(RunTryTruncateFloat32ToUint64WithoutCheck) {
   BufferedRawMachineAssemblerTester<uint64_t> m(kMachFloat32);
-  m.Return(m.TruncateFloat32ToUint64(m.Parameter(0)));
+  m.Return(m.TryTruncateFloat32ToUint64(m.Parameter(0)));
 
   FOR_UINT64_INPUTS(i) {
     float input = static_cast<float>(*i);
@@ -5456,6 +5456,28 @@ TEST(RunTruncateFloat32ToUint64) {
 }
 
 
+TEST(RunTryTruncateFloat32ToUint64WithCheck) {
+  int64_t success = 0;
+  BufferedRawMachineAssemblerTester<uint64_t> m(kMachFloat32);
+  Node* trunc = m.TryTruncateFloat32ToUint64(m.Parameter(0));
+  Node* val = m.Projection(0, trunc);
+  Node* check = m.Projection(1, trunc);
+  m.StoreToPointer(&success, kMachInt64, check);
+  m.Return(val);
+
+  FOR_FLOAT32_INPUTS(i) {
+    if (*i < 18446744073709551616.0 && *i >= 0.0) {
+      // Conversions within this range should succeed.
+      CHECK_EQ(static_cast<uint64_t>(*i), m.Call(*i));
+      CHECK_NE(0, success);
+    } else {
+      m.Call(*i);
+      CHECK_EQ(0, success);
+    }
+  }
+}
+
+
 TEST(RunTryTruncateFloat64ToUint64WithoutCheck) {
   BufferedRawMachineAssemblerTester<uint64_t> m(kMachFloat64);
   m.Return(m.TruncateFloat64ToUint64(m.Parameter(0)));