Revert "Revert "Enable optimizations with --debuggable.""

This reverts commit b7d27a53cb280a943c0a63a9e0806cf8e3ae4cde.

Change-Id: I398c23863e4fd86a3112076417378d22efd08306
diff --git a/test/Android.run-test.mk b/test/Android.run-test.mk
index 4397ea4..810ebe3 100644
--- a/test/Android.run-test.mk
+++ b/test/Android.run-test.mk
@@ -430,7 +430,8 @@
 TEST_ART_BROKEN_OPTIMIZING_ARM64_RUN_TESTS :=
 
 # Known broken tests for the optimizing compiler.
-TEST_ART_BROKEN_OPTIMIZING_RUN_TESTS :=
+TEST_ART_BROKEN_OPTIMIZING_RUN_TESTS := \
+  455-set-vreg \
 
 ifneq (,$(filter optimizing,$(COMPILER_TYPES)))
   ART_TEST_KNOWN_BROKEN += $(call all-run-test-names,$(TARGET_TYPES),$(RUN_TYPES),$(PREBUILD_TYPES), \
@@ -451,7 +452,6 @@
 # Tests that should fail when the optimizing compiler compiles them non-debuggable.
 TEST_ART_BROKEN_OPTIMIZING_NONDEBUGGABLE_RUN_TESTS := \
   454-get-vreg \
-  455-set-vreg \
   457-regs \
 
 ifneq (,$(filter optimizing,$(COMPILER_TYPES)))