Hack around skia:3570 for now.

tests/PMFloatTest.cpp

Index: tests/PMFloatTest.cpp
diff --git a/tests/PMFloatTest.cpp b/tests/PMFloatTest.cpp
index 5ce6e42854e718ea82cf280a60afc3b5111d6ca4..c3d5e48b4dd6e5eec107d208947d442043b11e45 100644
--- a/tests/PMFloatTest.cpp
+++ b/tests/PMFloatTest.cpp
@@ -24,7 +24,12 @@ DEF_TEST(SkPMFloat, r) {
 
     // Test SkPMFloat <-> Sk4f conversion.
     Sk4f fs = clamped;
+#if defined(SK_CPU_ARM64) && defined(SK_RELEASE)   // skia:3570
+    SkPMFloat scaled;
+    scaled = fs * Sk4f(0.25f);
+#else
     SkPMFloat scaled = fs * Sk4f(0.25f);
+#endif
     REPORTER_ASSERT(r, SkScalarNearlyEqual(63.75f, scaled.a()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual(38.25f, scaled.r()));
     REPORTER_ASSERT(r, SkScalarNearlyEqual( 0.25f, scaled.g()));