Revert "Revert "ARM/ARM64: Extend support of instruction combining.""

This reverts commit 6b5afdd144d2bb3bf994240797834b5666b2cf98.

Change-Id: Ic27a10f02e21109503edd64e6d73d1bb0c6a8ac6
diff --git a/compiler/Android.mk b/compiler/Android.mk
index 2cbafea..7a257b6 100644
--- a/compiler/Android.mk
+++ b/compiler/Android.mk
@@ -142,7 +142,9 @@
 	jni/quick/arm64/calling_convention_arm64.cc \
 	linker/arm64/relative_patcher_arm64.cc \
 	optimizing/code_generator_arm64.cc \
+	optimizing/instruction_simplifier_arm.cc \
 	optimizing/instruction_simplifier_arm64.cc \
+	optimizing/instruction_simplifier_shared.cc \
 	optimizing/intrinsics_arm64.cc \
 	utils/arm64/assembler_arm64.cc \
 	utils/arm64/managed_register_arm64.cc \