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diff --git a/deps/v8/test/js-perf-test/RegExp/complex_case_test.js b/deps/v8/test/js-perf-test/RegExp/complex_case_test.js
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+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// The following RegExp regression case from
+// https://bugs.chromium.org/p/chromium/issues/detail?id=977003
+let g = "[\\t\\n\\f ]";
+let W = g + "*";
+let h = "[\\ud800-\\udbff][\\udc00-\\udfff]";
+let k = "[\\u0080-\\ud7ff\\ue000-\\ufffd]|" + h;
+let U = "[0-9a-fA-F]{1,6}" + g + "?";
+let E = "(?:" + U + "|[\\u0020-\\u007e\\u0080-\\ud7ff\\ue000\\ufffd]|" + h + ")";
+let m = "\\\\" + E;
+let o = "(?:[\\t\\x21\\x23-\\x26\\x28-\\x5b\\x5d-\\x7e]|" + k + "|" + m + ")";
+let p = '[^\'"\\n\\f\\\\]|\\\\[\\s\\S]';
+let q = '"(?:\'|' + p + ')*"' + '|\'(?:\"|' + p + ')*\'';
+let r = "[-+]?(?:[0-9]+(?:[.][0-9]+)?|[.][0-9]+)";
+let t = "(?:[a-zA-Z_]|" + k + "|" + m + ")";
+let u = "(?:[a-zA-Z0-9_-]|" + k + "|" + m + ")";
+let v = u + "+";
+let I = "-?" + t + u + "*";
+let x = "(?:@?-?" + t + "|#)" + u + "*";
+let y = r + "(?:%|" + I + ")?";
+let z = "url[(]" + W + "(?:" + q + "|" + o + "*)" + W + "[)]";
+let B = "U[+][0-9A-F?]{1,6}(?:-[0-9A-F]{1,6})?";
+let C = "<\!--";
+let F = "-->";
+let S = g + "+";
+let G = "/(?:[*][^*]*[*]+(?:[^/][^*]*[*]+)*/|/[^\\n\\f]*)";
+let J = "(?!url[(])" + I + "[(]";
+let R = "[~|^$*]=";
+let T = '[^"\'\\\\/]|/(?![/*])';
+let V = "\\uFEFF";
+let Y = [V, B, z, J, x, q, y, C, F, S, G, R, T].join("|");
+
+function ComplexGlobalCaseInsensitiveMatch() {
+  // keep the RegExp in the measurement but not string concat nor join.
+  let X = new RegExp(Y, "gi");
+  "abcſABCβκς".match(X);
+  "color:".match(X);
+}
+
+benchmarks = [ [ComplexGlobalCaseInsensitiveMatch, () => {}],
+             ];
+
+createBenchmarkSuite("ComplexCaseInsensitiveTest");