[foozzie] Add suppression for Math.pow

Bug: chromium:1063568
Change-Id: I69ae644cc02549eb6c8c3b6169e9b1db2ee4e27e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2144067
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67220}

test/mjsunit/tools/foozzie.js

@@ -80,3 +80,12 @@ else {
 
 // Realm.eval is just eval.
 assertEquals(1477662728716, Realm.eval(Realm.create(), `Date.now()`));
+
+// Test suppressions when Math.pow is optimized.
+function callPow(v) {
+  return Math.pow(v, -0.5);
+}
+%PrepareFunctionForOptimization(callPow);
+const unoptimized = callPow(6996);
+%OptimizeFunctionOnNextCall(callPow);
+assertEquals(unoptimized, callPow(6996));

tools/clusterfuzz/v8_mock.js

@@ -21,6 +21,19 @@ var prettyPrinted = function prettyPrinted(msg) { return msg; };
   }
 })();
 
+// Mock Math.pow. Work around an optimization for -0.5.
+(function() {
+  const origMathPow = Math.pow;
+  Math.pow = function(a, b) {
+    if (b === -0.5) {
+      return 0;
+    } else {
+      return origMathPow(a, b);
+    }
+  }
+})();
+
+
 // Mock Date.
 (function() {
   let index = 0;