Add m-esr52 at 52.6.0

1 files changed, 21 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/TypedObject/bug959119.js b/js/src/jit-test/tests/TypedObject/bug959119.js
new file mode 100644
index 000000000..f329acc3f
--- /dev/null
+++ b/js/src/jit-test/tests/TypedObject/bug959119.js
@@ -0,0 +1,21 @@
+// This test exposed a bug in float32 optimization.
+// The (inlined and optimized) code for `add()` created
+// MDiv instructions specialized to integers, which was
+// then "respecialized" to float32, leading to internal
+// assertion errors.
+//
+// Public domain.
+
+if (!this.hasOwnProperty("TypedObject"))
+  quit();
+
+var {StructType,uint8,float32} = TypedObject;
+var RgbColor2 = new StructType({r: uint8, g: float32, b: uint8});
+RgbColor2.prototype.add = function(c) {
+  this.g += c;
+  this.b += c;
+};
+var gray = new RgbColor2({r: 129, g: 128, b: 127});
+gray.add(1);
+gray.add(2);
+