Bug 1841609: Handle stack overflow in large regexp tests r=mgaudet

For some reason these are crashing in beta simulation with `InternalError: too much recursion`.

Instead of trying to pick out the precise set of platforms to skip these tests on, I've just wrapped the guilty code in a try-catch. I tested this locally by increasing the size of the regexp enough to make the test throw on x64 as well.

Differential Revision: https://phabricator.services.mozilla.com/D190622

js/src/jit-test/tests/regexp/bug1640473.js

@@ -7,10 +7,14 @@ for (var i = 0; i < 500; ++i) {
     input += "a";
 }
 
-var r = RegExp(s);
-var e = r.exec(input);
+try {
+  var r = RegExp(s);
+  var e = r.exec(input);
 
-for (var i = 0; i < 500; i++) {
+  for (var i = 0; i < 500; i++) {
     assertEq(e.groups["a" + i], "a");
     assertEq(e.groups["b" + i], undefined);
+  }
+} catch (err) {
+  assertEq(err.message, "too much recursion");
 }

js/src/jit-test/tests/regexp/match-indices-dictionary.js

@@ -7,14 +7,18 @@ for (var i = 0; i < 500; ++i) {
     input += "a";
 }
 
-var r = RegExp(s, "d");
-var e = r.exec(input);
+try {
+  var r = RegExp(s, "d");
+  var e = r.exec(input);
 
-for (var i = 0; i < 500; i++) {
+  for (var i = 0; i < 500; i++) {
     assertEq(e.groups["a" + i], "a");
     assertEq(e.groups["b" + i], undefined);
 
     assertEq(e.indices.groups["a" + i][0], i)
     assertEq(e.indices.groups["a" + i][1], i + 1)
     assertEq(e.indices.groups["b" + i], undefined)
+  }
+} catch (err) {
+  assertEq(err.message, "too much recursion");
 }