From a9b9e6e5ff978bca000de4bb7ad915420b11a76d Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Fri, 14 Aug 2020 17:43:35 -0700
Subject: [PATCH] Merged and dist lists of unused methods from R8

Merge all the proguard_usage.zip files produced by the R8 rules and
dist the result.

Bug: 151857441
Test: m TARGET_BUILD_APPS=DocumentsUI dist
Change-Id: I7e6d73241478016093a203dc7bd86407ab86a4ac
---
 core/Makefile               | 25 +++++++++++++++++++++++++
 core/clear_vars.mk          |  1 +
 core/main.mk                |  4 ++++
 core/soong_app_prebuilt.mk  |  8 ++++++++
 core/soong_java_prebuilt.mk |  8 ++++++++
 5 files changed, 46 insertions(+)

diff --git a/core/Makefile b/core/Makefile
index 92723d327..7980c3f6f 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -4892,6 +4892,31 @@ $(PROGUARD_DICT_ZIP): $(SOONG_ZIP)
 	    sed -e 's/\(.*\)\/proguard_dictionary/\0\n\1\/classes.jar/' > $(PRIVATE_LIST_FILE)
 	$(SOONG_ZIP) --ignore_missing_files -d -o $@ -C $(OUT_DIR)/.. -l $(PRIVATE_LIST_FILE)
 
+#------------------------------------------------------------------
+# A zip of Proguard usage files.
+#
+PROGUARD_USAGE_ZIP := $(PRODUCT_OUT)/$(TARGET_PRODUCT)-proguard-usage-$(FILE_NAME_TAG).zip
+# For apps_only build we'll establish the dependency later in build/make/core/main.mk.
+ifeq (,$(TARGET_BUILD_UNBUNDLED))
+$(PROGUARD_USAGE_ZIP): \
+    $(INSTALLED_SYSTEMIMAGE_TARGET) \
+    $(INSTALLED_RAMDISK_TARGET) \
+    $(INSTALLED_BOOTIMAGE_TARGET) \
+    $(INSTALLED_USERDATAIMAGE_TARGET) \
+    $(INSTALLED_VENDORIMAGE_TARGET) \
+    $(INSTALLED_PRODUCTIMAGE_TARGET) \
+    $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) \
+    $(INSTALLED_ODMIMAGE_TARGET) \
+    $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
+    $(INSTALLED_ODM_DLKMIMAGE_TARGET) \
+    $(updater_dep)
+endif
+$(PROGUARD_USAGE_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,proguard_usage)/filelist
+$(PROGUARD_USAGE_ZIP): $(MERGE_ZIPS)
+	@echo "Packaging Proguard usage files."
+	mkdir -p $(dir $@) $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS $(dir $(PRIVATE_LIST_FILE))
+	find $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS -name proguard_usage.zip > $(PRIVATE_LIST_FILE)
+	$(MERGE_ZIPS) $@ @$(PRIVATE_LIST_FILE)
 
 ifeq (true,$(PRODUCT_USE_DYNAMIC_PARTITIONS))
 
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 307c2c227..79f1bb439 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -275,6 +275,7 @@ LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR :=
 LOCAL_SOONG_LINK_TYPE :=
 LOCAL_SOONG_LINT_REPORTS :=
 LOCAL_SOONG_PROGUARD_DICT :=
+LOCAL_SOONG_PROGUARD_USAGE_ZIP :=
 LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE :=
 LOCAL_SOONG_DEVICE_RRO_DIRS :=
 LOCAL_SOONG_PRODUCT_RRO_DIRS :=
diff --git a/core/main.mk b/core/main.mk
index a3d594bba..897483a2e 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1666,6 +1666,9 @@ ifneq ($(TARGET_BUILD_APPS),)
   $(PROGUARD_DICT_ZIP) : $(apps_only_installed_files)
   $(call dist-for-goals,apps_only, $(PROGUARD_DICT_ZIP))
 
+  $(PROGUARD_USAGE_ZIP) : $(apps_only_installed_files)
+  $(call dist-for-goals,apps_only, $(PROGUARD_USAGE_ZIP))
+
   $(SYMBOLS_ZIP) : $(apps_only_installed_files)
   $(call dist-for-goals,apps_only, $(SYMBOLS_ZIP))
 
@@ -1694,6 +1697,7 @@ else ifeq (,$(TARGET_BUILD_UNBUNDLED))
     $(BUILT_OTATOOLS_PACKAGE) \
     $(SYMBOLS_ZIP) \
     $(PROGUARD_DICT_ZIP) \
+    $(PROGUARD_USAGE_ZIP) \
     $(COVERAGE_ZIP) \
     $(APPCOMPAT_ZIP) \
     $(INSTALLED_FILES_FILE) \
diff --git a/core/soong_app_prebuilt.mk b/core/soong_app_prebuilt.mk
index b994b17ad..50ac93a96 100644
--- a/core/soong_app_prebuilt.mk
+++ b/core/soong_app_prebuilt.mk
@@ -7,6 +7,7 @@
 # LOCAL_SOONG_HEADER_JAR
 # LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR
 # LOCAL_SOONG_PROGUARD_DICT
+# LOCAL_SOONG_PROGUARD_USAGE
 # LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
 # LOCAL_SOONG_RRO_DIRS
 # LOCAL_SOONG_JNI_LIBS_$(TARGET_ARCH)
@@ -85,6 +86,13 @@ ifdef LOCAL_SOONG_PROGUARD_DICT
     $(intermediates.COMMON)/proguard_dictionary)
 endif
 
+ifdef LOCAL_SOONG_PROGUARD_USAGE_ZIP
+  $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_USAGE_ZIP),\
+    $(intermediates.COMMON)/proguard_usage.zip))
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),\
+    $(intermediates.COMMON)/proguard_usage.zip)
+endif
+
 ifdef LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
 resource_export_package := $(intermediates.COMMON)/package-export.apk
 resource_export_stamp := $(intermediates.COMMON)/src/R.stamp
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index 05f700d67..5444d960c 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -58,6 +58,14 @@ ifdef LOCAL_SOONG_PROGUARD_DICT
     $(intermediates.COMMON)/proguard_dictionary)
 endif
 
+ifdef LOCAL_SOONG_PROGUARD_USAGE
+  $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_USAGE_ZIP),\
+    $(intermediates.COMMON)/proguard_usage.zip))
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),\
+    $(intermediates.COMMON)/proguard_usage.zip)
+endif
+
+
 ifdef LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE
   my_res_package := $(intermediates.COMMON)/package-res.apk