--- /dev/null
+// Using full number + undefined for math.
+function addArgsNumberAndUndefined(a, b) {
+ return a + b;
+}
+noInline(addArgsNumberAndUndefined);
+
+for (var i = 0; i < 1e4; ++i) {
+ var value = addArgsNumberAndUndefined(i, 1);
+ if (value !== (i + 1))
+ throw "addArgsNumberAndUndefined(i, 1) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined(0.5, i);
+ if (value !== (i + 0.5))
+ throw "addArgsNumberAndUndefined(0.5, i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined(undefined, i);
+ if (value === value)
+ throw "addArgsNumberAndUndefined(undefined, i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined(i, undefined);
+ if (value === value)
+ throw "addArgsNumberAndUndefined(i, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined(i);
+ if (value === value)
+ throw "addArgsNumberAndUndefined(i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined(undefined, undefined);
+ if (value === value)
+ throw "addArgsNumberAndUndefined(undefined, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsNumberAndUndefined();
+ if (value === value)
+ throw "addArgsNumberAndUndefined() failed with i = " + i + " returned value = " + value;
+}
+
+
+// Using int32 + undefined for math.
+function addArgsInt32AndUndefined(a, b) {
+ return a + b;
+}
+noInline(addArgsInt32AndUndefined);
+
+for (var i = 0; i < 1e4; ++i) {
+ var value = addArgsInt32AndUndefined(i, 1);
+ if (value !== (i + 1))
+ throw "addArgsInt32AndUndefined(i, 1) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsInt32AndUndefined(undefined, i);
+ if (value === value)
+ throw "addArgsInt32AndUndefined(undefined, i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsInt32AndUndefined(i, undefined);
+ if (value === value)
+ throw "addArgsInt32AndUndefined(i, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsInt32AndUndefined(i);
+ if (value === value)
+ throw "addArgsInt32AndUndefined(i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsInt32AndUndefined(undefined, undefined);
+ if (value === value)
+ throw "addArgsInt32AndUndefined(undefined, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsInt32AndUndefined();
+ if (value === value)
+ throw "addArgsInt32AndUndefined() failed with i = " + i + " returned value = " + value;
+}
+
+function testFallbackWithDouble() {
+ var value = addArgsNumberAndUndefined(Math.PI, Math.PI);
+ if (value !== 2 * Math.PI)
+ throw "addArgsNumberAndUndefined(Math.PI, Math.PI) failed with i = " + i + " returned value = " + value;
+}
+testFallbackWithDouble();
+
+
+// Using full number + undefined for math.
+function addArgsDoubleAndUndefined(a, b) {
+ return a + b;
+}
+noInline(addArgsDoubleAndUndefined);
+
+for (var i = 0; i < 1e4; ++i) {
+ var value = addArgsDoubleAndUndefined(0.5, i);
+ if (value !== (i + 0.5))
+ throw "addArgsDoubleAndUndefined(0.5, i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsDoubleAndUndefined(undefined, 0.1);
+ if (value === value)
+ throw "addArgsDoubleAndUndefined(undefined, i) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsDoubleAndUndefined(0.6, undefined);
+ if (value === value)
+ throw "addArgsDoubleAndUndefined(i, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsDoubleAndUndefined(42.8);
+ if (value === value)
+ throw "addArgsDoubleAndUndefined(i) failed with i = " + i + " returned value = " + value;
+}
+
+function testFallbackWithObject() {
+ var value = addArgsDoubleAndUndefined(Math.PI, { valueOf: function() { return 5; }});
+ if (value !== 5 + Math.PI)
+ throw "addArgsDoubleAndUndefined(Math.PI, { valueOf: function() { return 5; }}) failed with i = " + i + " returned value = " + value;
+}
+testFallbackWithObject();
+
+
+// Using full number + undefined for math.
+function addArgsOnlyUndefined(a, b) {
+ return a + b;
+}
+noInline(addArgsOnlyUndefined);
+
+for (var i = 0; i < 1e4; ++i) {
+ var value = addArgsOnlyUndefined(undefined, undefined);
+ if (value === value)
+ throw "addArgsOnlyUndefined(undefined, undefined) failed with i = " + i + " returned value = " + value;
+
+ var value = addArgsOnlyUndefined();
+ if (value === value)
+ throw "addArgsOnlyUndefined() failed with i = " + i + " returned value = " + value;
+}
+
+function testFallbackWithString() {
+ var value = addArgsOnlyUndefined("foo", "bar");
+ if (value !== "foobar")
+ throw "addArgsOnlyUndefined(\"foo\", \"bar\") failed with i = " + i + " returned value = " + value;
+}
+testFallbackWithString();
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