Bug 888568 - Range analysis, Handle int32 infinities on MAbs. r=mjrosenb

js/src/ion/RangeAnalysis.cpp

@@ -682,8 +682,13 @@ MAbs::computeRange()
 
     Range other(getOperand(0));
 
-    Range *range = new Range(0,
-                             Max(Abs<int64_t>(other.lower()), Abs<int64_t>(other.upper())),
+    int64_t max = 0;
+    if (other.isInt32())
+        max = Max(Abs<int64_t>(other.lower()), Abs<int64_t>(other.upper()));
+    else
+        max = RANGE_INF_MAX;
+
+    Range *range = new Range(0, max,
                              other.isDecimal(),
                              other.exponent());
     setRange(range);

js/src/jit-test/tests/ion/bug888568.js

@@ -0,0 +1,5 @@
+function f() {
+    return (42.0 + Math.abs(1.0e60)) | 0;
+}
+assertEq(f(), 0);
+assertEq(f(), 0);