[turbofan] Fixed the second return value of TryTruncateFloatXXToUint64.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index 8bb5042c0210aef0ff48bbda7494de2d6d668a65..3016678edd5ba2a707c403f71ca045e9f1273b80 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -1070,16 +1070,16 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kArm64Float32ToUint64:
       __ Fcvtzu(i.OutputRegister64(), i.InputFloat32Register(0));
       if (i.OutputCount() > 1) {
-        __ Fcmp(i.InputFloat32Register(0), 0.0);
-        __ Ccmp(i.OutputRegister(0), -1, ZFlag, ge);
+        __ Fcmp(i.InputFloat32Register(0), -1.0);
+        __ Ccmp(i.OutputRegister(0), -1, ZFlag, gt);
         __ Cset(i.OutputRegister(1), ne);
       }
       break;
     case kArm64Float64ToUint64:
       __ Fcvtzu(i.OutputRegister64(), i.InputDoubleRegister(0));
       if (i.OutputCount() > 1) {
-        __ Fcmp(i.InputDoubleRegister(0), 0.0);
-        __ Ccmp(i.OutputRegister(0), -1, ZFlag, ge);
+        __ Fcmp(i.InputDoubleRegister(0), -1.0);
+        __ Ccmp(i.OutputRegister(0), -1, ZFlag, gt);
         __ Cset(i.OutputRegister(1), ne);
       }
       break;