[turbofan] Improve performance of mjsunit test

R=neis@chromium.org

Bug: v8:7599
Change-Id: I8a1e4864800dbf76530ebbe2a9ce09dac55a1f65
Reviewed-on: https://chromium-review.googlesource.com/980055
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52217}

test/mjsunit/constant-folding-2.js

@@ -105,7 +105,7 @@ test(function div() {
   assertSame(-Infinity, Infinity / (-3));
   assertSame(NaN, NaN / 3);
   assertSame(-Infinity, 1 / (-0.0));
-  assertSame(Infinity, Infinity/0.0);
+  assertSame(Infinity, Infinity / 0.0);
 });
 
 test(function mathMin() {
@@ -187,8 +187,8 @@ test(function mathRound() {
 
 test(function mathFround() {
   assertTrue(isNaN(Math.fround(NaN)));
-  assertSame(Infinity, 1/Math.fround(0));
-  assertSame(-Infinity, 1/Math.fround(-0));
+  assertSame(Infinity, 1 / Math.fround(0));
+  assertSame(-Infinity, 1 / Math.fround(-0));
   assertSame(Infinity, Math.fround(Infinity));
   assertSame(-Infinity, Math.fround(-Infinity));
   assertSame(Infinity, Math.fround(1E200));
@@ -275,6 +275,20 @@ test(function stringCodePointAt() {
   assertSame(undefined, "äϠ�".codePointAt(1 + 4294967295));
 }, 10);
 
+test(function stringFromCodePoint() {
+  assertEquals(String.fromCodePoint(""), "\0");
+  assertEquals(String.fromCodePoint(), "");
+  assertEquals(String.fromCodePoint(-0), "\0");
+  assertEquals(String.fromCodePoint(0), "\0");
+  assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06");
+  assertEquals(
+    String.fromCodePoint(0x1D306, 0x61, 0x1D307),
+    "\uD834\uDF06a\uD834\uDF07");
+  assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07");
+  assertEquals(String.fromCodePoint(false), "\0");
+  assertEquals(String.fromCodePoint(null), "\0");
+}, 5);
+
 test(function stringFromCharCode() {
   assertEquals("！", String.fromCharCode(0x10FF01));
 }, 2);

test/mjsunit/es6/string-fromcodepoint.js

@@ -7,70 +7,60 @@
 
 // Flags: --allow-natives-syntax
 
-function test() {
-  assertEquals(String.fromCodePoint.length, 1);
-  assertEquals(String.propertyIsEnumerable("fromCodePoint"), false);
+assertEquals(String.fromCodePoint.length, 1);
+assertEquals(String.propertyIsEnumerable("fromCodePoint"), false);
 
-  assertEquals(String.fromCodePoint(""), "\0");
-  assertEquals(String.fromCodePoint(), "");
-  assertEquals(String.fromCodePoint(-0), "\0");
-  assertEquals(String.fromCodePoint(0), "\0");
-  assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06");
-  assertEquals(
-    String.fromCodePoint(0x1D306, 0x61, 0x1D307),
-    "\uD834\uDF06a\uD834\uDF07");
-  assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07");
-  assertEquals(String.fromCodePoint(false), "\0");
-  assertEquals(String.fromCodePoint(null), "\0");
+assertEquals(String.fromCodePoint(""), "\0");
+assertEquals(String.fromCodePoint(), "");
+assertEquals(String.fromCodePoint(-0), "\0");
+assertEquals(String.fromCodePoint(0), "\0");
+assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06");
+assertEquals(
+  String.fromCodePoint(0x1D306, 0x61, 0x1D307),
+  "\uD834\uDF06a\uD834\uDF07");
+assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07");
+assertEquals(String.fromCodePoint(false), "\0");
+assertEquals(String.fromCodePoint(null), "\0");
 
-  assertThrows(function () { String.fromCodePoint("_"); }, RangeError);
-  assertThrows(function () { String.fromCodePoint("+Infinity"); }, RangeError);
-  assertThrows(function () { String.fromCodePoint("-Infinity"); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(-1); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(0x10FFFF + 1); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(3.14); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(3e-2); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(-Infinity); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(+Infinity); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(NaN); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(undefined); }, RangeError);
-  assertThrows(function () { String.fromCodePoint({}); }, RangeError);
-  assertThrows(function () { String.fromCodePoint(/./); }, RangeError);
-  assertThrows(function () {
-    String.fromCodePoint({
-      valueOf: function () { throw Error(); }
-    });
-  }, Error);
-  assertThrows(function () {
-    String.fromCodePoint({
-      valueOf: function () { throw Error(); }
-    });
-  }, Error);
-  var tmp = 0x60;
-  assertEquals(String.fromCodePoint({
-    valueOf: function () { ++tmp; return tmp; }
-  }), "a");
-  assertEquals(tmp, 0x61);
+assertThrows(function () { String.fromCodePoint("_"); }, RangeError);
+assertThrows(function () { String.fromCodePoint("+Infinity"); }, RangeError);
+assertThrows(function () { String.fromCodePoint("-Infinity"); }, RangeError);
+assertThrows(function () { String.fromCodePoint(-1); }, RangeError);
+assertThrows(function () { String.fromCodePoint(0x10FFFF + 1); }, RangeError);
+assertThrows(function () { String.fromCodePoint(3.14); }, RangeError);
+assertThrows(function () { String.fromCodePoint(3e-2); }, RangeError);
+assertThrows(function () { String.fromCodePoint(-Infinity); }, RangeError);
+assertThrows(function () { String.fromCodePoint(+Infinity); }, RangeError);
+assertThrows(function () { String.fromCodePoint(NaN); }, RangeError);
+assertThrows(function () { String.fromCodePoint(undefined); }, RangeError);
+assertThrows(function () { String.fromCodePoint({}); }, RangeError);
+assertThrows(function () { String.fromCodePoint(/./); }, RangeError);
+assertThrows(function () {
+  String.fromCodePoint({
+    valueOf: function () { throw Error(); }
+  });
+}, Error);
+assertThrows(function () {
+  String.fromCodePoint({
+    valueOf: function () { throw Error(); }
+  });
+}, Error);
+var tmp = 0x60;
+assertEquals(String.fromCodePoint({
+  valueOf: function () { ++tmp; return tmp; }
+}), "a");
+assertEquals(tmp, 0x61);
 
-  var counter = Math.pow(2, 15) * 3 / 2;
-  var result = [];
-  while (--counter >= 0) {
-    result.push(0); // one code unit per symbol
-  }
-  String.fromCodePoint.apply(null, result); // must not throw
-
-  var counter = Math.pow(2, 15) * 3 / 2;
-  var result = [];
-  while (--counter >= 0) {
-    result.push(0xFFFF + 1); // two code units per symbol
-  }
-  String.fromCodePoint.apply(null, result); // must not throw
+var counter = Math.pow(2, 15) * 3 / 2;
+var result = [];
+while (--counter >= 0) {
+  result.push(0); // one code unit per symbol
 }
+String.fromCodePoint.apply(null, result); // must not throw
 
-test();
-test();
-
-for (var i = 0; i < 100; ++i) {
-  %OptimizeFunctionOnNextCall(test);
-  test();
+var counter = Math.pow(2, 15) * 3 / 2;
+var result = [];
+while (--counter >= 0) {
+  result.push(0xFFFF + 1); // two code units per symbol
 }
+String.fromCodePoint.apply(null, result); // must not throw