diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index a4c47d5..7e44fff 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -281,7 +281,6 @@
 LOCAL_UNSTRIPPED_PATH:=
 LOCAL_USE_AAPT2:=$(USE_AAPT2)
 LOCAL_USE_CLANG_LLD:=
-LOCAL_USE_R8:=
 LOCAL_USE_VNDK:=
 LOCAL_USES_LIBRARIES:=
 LOCAL_VENDOR_MODULE:=
diff --git a/core/config.mk b/core/config.mk
index 091b1d1..caf2e56 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -588,12 +588,6 @@
 USE_D8 := true
 .KATI_READONLY := USE_D8
 
-# Default R8 behavior when USE_R8 is not specified.
-ifndef USE_R8
-  USE_R8 := true
-endif
-.KATI_READONLY := USE_R8
-
 #
 # Tools that are prebuilts for TARGET_BUILD_APPS
 #
diff --git a/core/definitions.mk b/core/definitions.mk
index 291441b..16b609b 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2906,22 +2906,6 @@
 	$(MERGE_ZIPS) -D -zipToNotStrip $${OUTPUT_JAR} -stripFile "classes*.dex" $(2) $${OUTPUT_JAR} $(1)
 endef
 
-###########################################################
-## Commands to call Proguard
-###########################################################
-ifdef TARGET_OPENJDK9
-define transform-jar-to-proguard
-@echo Skipping Proguard: $< $@
-$(hide) cp '$<' $@
-endef
-else
-define transform-jar-to-proguard
-@echo Proguard: $@
-$(hide) $(PROGUARD) -injars $< -outjars $@ $(PRIVATE_PROGUARD_FLAGS) \
-    $(addprefix -injars , $(PRIVATE_EXTRA_INPUT_JAR))
-endef
-endif
-
 
 ###########################################################
 ## Commands to call R8
diff --git a/core/java.mk b/core/java.mk
index 768860b..d428eb2 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -15,10 +15,6 @@
 endif # !PDK_JAVA
 endif #PDK
 
-ifndef LOCAL_USE_R8
-LOCAL_USE_R8 := $(USE_R8)
-endif
-
 LOCAL_NO_STANDARD_LIBRARIES:=$(strip $(LOCAL_NO_STANDARD_LIBRARIES))
 LOCAL_SDK_VERSION:=$(strip $(LOCAL_SDK_VERSION))
 
@@ -73,7 +69,6 @@
 full_classes_compiled_jar := $(intermediates.COMMON)/classes-full-debug.jar
 full_classes_processed_jar := $(intermediates.COMMON)/classes-processed.jar
 full_classes_jarjar_jar := $(intermediates.COMMON)/classes-jarjar.jar
-full_classes_proguard_jar := $(intermediates.COMMON)/classes-proguard.jar
 full_classes_combined_jar := $(intermediates.COMMON)/classes-combined.jar
 built_dex_intermediate := $(intermediates.COMMON)/dex/classes.dex
 built_dex_hiddenapi := $(intermediates.COMMON)/dex-hiddenapi/classes.dex
@@ -97,7 +92,6 @@
     $(full_classes_jarjar_jar) \
     $(full_classes_jar) \
     $(full_classes_combined_jar) \
-    $(full_classes_proguard_jar) \
     $(built_dex_intermediate) \
     $(built_dex) \
     $(full_classes_stubs_jar) \
@@ -405,12 +399,7 @@
 endif
 endif
 
-ifeq ($(USE_R8),true)
-proguard_jars_prefix := -libraryjars
-else
-proguard_jars_prefix := -systemjars
-endif
-legacy_proguard_flags := $(addprefix $(proguard_jars_prefix) ,$(my_proguard_sdk_raise) \
+legacy_proguard_flags := $(addprefix -libraryjars ,$(my_proguard_sdk_raise) \
   $(filter-out $(my_proguard_sdk_raise), \
     $(full_java_bootclasspath_libs) \
     $(full_shared_java_header_libs)))
@@ -477,9 +466,7 @@
 endif # LOCAL_INSTRUMENTATION_FOR
 
 proguard_flag_files := $(addprefix $(LOCAL_PATH)/, $(LOCAL_PROGUARD_FLAG_FILES))
-ifeq ($(LOCAL_USE_R8),true)
 proguard_flag_files += $(addprefix $(LOCAL_PATH)/, $(LOCAL_R8_FLAG_FILES))
-endif # LOCAL_USE_R8
 LOCAL_PROGUARD_FLAGS += $(addprefix -include , $(proguard_flag_files))
 
 ifdef LOCAL_TEST_MODULE_TO_PROGUARD_WITH
@@ -489,60 +476,33 @@
 endif
 
 ifneq ($(filter obfuscation,$(LOCAL_PROGUARD_ENABLED)),)
-ifneq ($(LOCAL_USE_R8),true)
-  $(full_classes_proguard_jar): .KATI_IMPLICIT_OUTPUTS := $(proguard_dictionary) $(proguard_configuration)
-else
   $(built_dex_intermediate): .KATI_IMPLICIT_OUTPUTS := $(proguard_dictionary) $(proguard_configuration)
 endif
-endif
-
-# If R8 is not enabled run Proguard.
-ifneq ($(LOCAL_USE_R8),true)
-# Changes to these dependencies need to be replicated below when using R8
-# instead of Proguard + dx.
-$(full_classes_proguard_jar): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
-$(full_classes_proguard_jar): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
-$(full_classes_proguard_jar) : $(full_classes_pre_proguard_jar) $(extra_input_jar) $(my_proguard_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) | $(PROGUARD)
-	$(call transform-jar-to-proguard)
-else # !LOCAL_USE_R8
-# Running R8 instead of Proguard, proguarded jar is actually the pre-Proguarded jar.
-full_classes_proguard_jar := $(full_classes_pre_proguard_jar)
-endif # !LOCAL_USE_R8
 
 else  # LOCAL_PROGUARD_ENABLED not defined
 proguard_flag_files :=
-full_classes_proguard_jar := $(full_classes_pre_proguard_jar)
 endif # LOCAL_PROGUARD_ENABLED defined
 
 ifneq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 $(built_dex_intermediate): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
 
-my_r8 :=
 ifdef LOCAL_PROGUARD_ENABLED
-ifeq ($(LOCAL_USE_R8),true)
-# These are the dependencies for the proguarded jar when running
-# Proguard + dx. They are used for the generated dex when using R8, as
-# R8 does Proguard + dx
-my_r8 := true
-$(built_dex_intermediate): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
-$(built_dex_intermediate): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
-$(built_dex_intermediate) : $(full_classes_proguard_jar) $(extra_input_jar) $(my_proguard_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) $(R8_COMPAT_PROGUARD)
+  $(built_dex_intermediate): PRIVATE_EXTRA_INPUT_JAR := $(extra_input_jar)
+  $(built_dex_intermediate): PRIVATE_PROGUARD_FLAGS := $(legacy_proguard_flags) $(common_proguard_flags) $(LOCAL_PROGUARD_FLAGS)
+  $(built_dex_intermediate) : $(full_classes_pre_proguard_jar) $(extra_input_jar) $(my_proguard_sdk_raise) $(common_proguard_flag_files) $(proguard_flag_files) $(legacy_proguard_lib_deps) $(R8_COMPAT_PROGUARD)
 	$(transform-jar-to-dex-r8)
-endif # LOCAL_USE_R8
-endif # LOCAL_PROGUARD_ENABLED
-
-ifndef my_r8
-$(built_dex_intermediate): $(full_classes_proguard_jar) $(DX) $(ZIP2ZIP)
+else # !LOCAL_PROGUARD_ENABLED
+  $(built_dex_intermediate): $(full_classes_pre_proguard_jar) $(DX) $(ZIP2ZIP)
 	$(transform-classes.jar-to-dex)
 endif
 
 ifneq ($(filter $(LOCAL_MODULE),$(PRODUCT_BOOT_JARS)),) # is_boot_jar
   # Derive API greylist from the classes jar.
-  # We use full_classes_proguard_jar here, as that is what is converted to dex
-  # later on. The difference is academic currently, as we don't proguard any
+  # We use full_classes_pre_proguard_jar here, as that is what is converted to
+  # dex later on. The difference is academic currently, as we don't proguard any
   # bootclasspath code at the moment. If we were to do that, we should add keep
   # rules for all members with the @UnsupportedAppUsage annotation.
-  $(eval $(call hiddenapi-generate-greylist-txt,$(full_classes_proguard_jar),$(greylist_txt)))
+  $(eval $(call hiddenapi-generate-greylist-txt,$(full_classes_pre_proguard_jar),$(greylist_txt)))
   LOCAL_INTERMEDIATE_TARGETS += $(greylist_txt)
   $(eval $(call hiddenapi-copy-dex-files,$(built_dex_intermediate),$(built_dex_hiddenapi)))
   built_dex_copy_from := $(built_dex_hiddenapi)
diff --git a/core/java_library.mk b/core/java_library.mk
index 1b914f5..9a7422d 100644
--- a/core/java_library.mk
+++ b/core/java_library.mk
@@ -57,9 +57,9 @@
 ifeq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 # There are some dependencies outside the build system that assume classes.jar
 # is available as javalib.jar so copy it there too.
-$(eval $(call copy-one-file,$(full_classes_proguard_jar),$(common_javalib.jar)))
+$(eval $(call copy-one-file,$(full_classes_pre_proguard_jar),$(common_javalib.jar)))
 
-$(eval $(call copy-one-file,$(full_classes_proguard_jar),$(LOCAL_BUILT_MODULE)))
+$(eval $(call copy-one-file,$(full_classes_pre_proguard_jar),$(LOCAL_BUILT_MODULE)))
 
 else # !LOCAL_IS_STATIC_JAVA_LIBRARY