diff --git a/core/Makefile b/core/Makefile
index c41bedd..7c991be 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -2101,6 +2101,7 @@
 			-v "TARGET_CPU_ABI=$(TARGET_CPU_ABI)" \
 			-v "DLL_EXTENSION=$(HOST_SHLIB_SUFFIX)" \
 			-v "FONT_OUT=$(SDK_FONT_TEMP)" \
+			-v "JACK_SDKTOOL_VERSION=$(JACK_SDKTOOL_VERSION)" \
 			-o $(PRIVATE_DIR) && \
 		cp -f $(target_notice_file_txt) \
 				$(PRIVATE_DIR)/system-images/android-$(PLATFORM_VERSION)/$(TARGET_CPU_ABI)/NOTICE.txt && \
diff --git a/core/clang/TARGET_arm.mk b/core/clang/TARGET_arm.mk
index eeffa51..5c1bf6f 100644
--- a/core/clang/TARGET_arm.mk
+++ b/core/clang/TARGET_arm.mk
@@ -61,7 +61,7 @@
   $(call $(clang_2nd_arch_prefix)convert-to-clang-flags,$($(clang_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS)) \
   $(CLANG_CONFIG_arm_TARGET_EXTRA_LDFLAGS)
 
-$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-none-linux-gnueabi
+$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-linux-androideabi
 $(clang_2nd_arch_prefix)RS_TRIPLE_CFLAGS :=
 $(clang_2nd_arch_prefix)RS_COMPAT_TRIPLE := armv7-none-linux-gnueabi
 
diff --git a/core/clang/TARGET_mips.mk b/core/clang/TARGET_mips.mk
index 19bbaf2..1a0176a 100644
--- a/core/clang/TARGET_mips.mk
+++ b/core/clang/TARGET_mips.mk
@@ -60,7 +60,7 @@
   $(call $(clang_2nd_arch_prefix)convert-to-clang-flags,$($(clang_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS)) \
   $(CLANG_CONFIG_mips_TARGET_EXTRA_LDFLAGS)
 
-$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-none-linux-gnueabi
+$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-linux-androideabi
 $(clang_2nd_arch_prefix)RS_TRIPLE_CFLAGS :=
 RS_COMPAT_TRIPLE := mipsel-linux-android
 
diff --git a/core/clang/TARGET_x86.mk b/core/clang/TARGET_x86.mk
index 9ca86a1..741768b 100644
--- a/core/clang/TARGET_x86.mk
+++ b/core/clang/TARGET_x86.mk
@@ -66,7 +66,7 @@
   $(call $(clang_2nd_arch_prefix)convert-to-clang-flags,$($(clang_2nd_arch_prefix)TARGET_GLOBAL_LDFLAGS)) \
   $(CLANG_CONFIG_x86_TARGET_EXTRA_LDFLAGS)
 
-$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-none-linux-gnueabi
+$(clang_2nd_arch_prefix)RS_TRIPLE := armv7-linux-androideabi
 $(clang_2nd_arch_prefix)RS_TRIPLE_CFLAGS := -D__i386__
 $(clang_2nd_arch_prefix)RS_COMPAT_TRIPLE := i686-linux-android
 
diff --git a/core/clang/config.mk b/core/clang/config.mk
index e1ad3ce..6cc3446 100644
--- a/core/clang/config.mk
+++ b/core/clang/config.mk
@@ -14,7 +14,7 @@
 # RenderScript-specific tools
 # These are tied to the version of LLVM directly in external/, so they might
 # trail the host prebuilts being used for the rest of the build process.
-RS_LLVM_PREBUILTS_VERSION := 3.8
+RS_LLVM_PREBUILTS_VERSION := clang-2690385
 RS_LLVM_PREBUILTS_BASE := prebuilts/clang/host
 RS_LLVM_PREBUILTS_PATH := $(RS_LLVM_PREBUILTS_BASE)/$(BUILD_OS)-x86/$(RS_LLVM_PREBUILTS_VERSION)/bin
 RS_CLANG := $(RS_LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
diff --git a/core/clang/versions.mk b/core/clang/versions.mk
index f80d6b9..81bd3b8 100644
--- a/core/clang/versions.mk
+++ b/core/clang/versions.mk
@@ -1,5 +1,5 @@
 ## Clang/LLVM release versions.
 
 LLVM_RELEASE_VERSION := 3.8
-LLVM_PREBUILTS_VERSION ?= clang-2658975
+LLVM_PREBUILTS_VERSION ?= clang-2690385
 LLVM_PREBUILTS_BASE ?= prebuilts/clang/host
diff --git a/core/config.mk b/core/config.mk
index 7099525..d25b323 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -498,8 +498,6 @@
 # ---------------------------------------------------------------
 # Generic tools.
 JACK := $(HOST_OUT_EXECUTABLES)/jack
-JACK_JAR := $(HOST_OUT_JAVA_LIBRARIES)/jack.jar
-JILL_JAR := $(HOST_OUT_JAVA_LIBRARIES)/jill.jar
 
 LEX := prebuilts/misc/$(BUILD_OS)-$(HOST_PREBUILT_ARCH)/flex/flex-2.5.39
 # The default PKGDATADIR built in the prebuilt bison is a relative path
@@ -565,7 +563,6 @@
 # Turn off jack warnings by default.
 DEFAULT_JACK_EXTRA_ARGS += --verbose error
 
-JILL := java -jar $(JILL_JAR)
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py
 RMTYPEDEFS := $(HOST_OUT_EXECUTABLES)/rmtypedefs
diff --git a/core/definitions.mk b/core/definitions.mk
index f3d981a..4d692c5 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1918,7 +1918,8 @@
         @$(call emit-line,$(wordlist 4601,4800,$(1)),$(2))
         @$(call emit-line,$(wordlist 4801,5000,$(1)),$(2))
         @$(call emit-line,$(wordlist 5001,5200,$(1)),$(2))
-        @$(if $(wordlist 5201,5202,$(1)),$(error Too many words ($(words $(1)))))
+        @$(call emit-line,$(wordlist 5201,5400,$(1)),$(2))
+        @$(if $(wordlist 5401,5402,$(1)),$(error Too many words ($(words $(1)))))
 endef
 
 # For a list of jar files, unzip them to a specified directory,
@@ -2254,25 +2255,6 @@
     $(addprefix -ix , $(PRIVATE_EMMA_COVERAGE_FILTER))
 endef
 
-#TODO: use a smaller -Xmx value for most libraries;
-#      only core.jar and framework.jar need a heap this big.
-define transform-classes.jar-to-dex
-@echo "target Dex: $(PRIVATE_MODULE)"
-@mkdir -p $(dir $@)
-$(hide) rm -f $(dir $@)classes*.dex
-$(hide) $(DX) \
-    -JXms16M -JXmx2048M \
-    --dex --output=$(dir $@) \
-    $(if $(NO_OPTIMIZE_DX), \
-        --no-optimize) \
-    $(if $(GENERATE_DEX_DEBUG), \
-	    --debug --verbose \
-	    --dump-to=$(@:.dex=.lst) \
-	    --dump-width=1000) \
-    $(PRIVATE_DX_FLAGS) \
-    $<
-endef
-
 # Create a mostly-empty .jar file that we'll add to later.
 # The MacOS jar tool doesn't like creating empty jar files,
 # so we need to give it something.
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 35655f3..83047d4 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -102,10 +102,6 @@
 	$(hide) $(ACP) -fp $< $@
 
 ifndef LOCAL_JACK_ENABLED
-$(built_dex): PRIVATE_INTERMEDIATES_DIR := $(intermediates.COMMON)
-$(built_dex): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
-$(built_dex): $(full_classes_jar) $(DX)
-	$(transform-classes.jar-to-dex)
 
 $(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
 $(LOCAL_BUILT_MODULE): PRIVATE_SOURCE_ARCHIVE := $(full_classes_jarjar_jar)
diff --git a/core/java.mk b/core/java.mk
index e8bdc52..64140fb 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -613,8 +613,6 @@
 ifeq ($(LOCAL_EMMA_INSTRUMENT),true)
 $(built_dex_intermediate): PRIVATE_DX_FLAGS += --no-locals
 endif
-$(built_dex_intermediate): $(full_classes_proguard_jar) $(DX)
-	$(transform-classes.jar-to-dex)
 endif # LOCAL_JACK_ENABLED is disabled
 
 $(built_dex): $(built_dex_intermediate) | $(ACP)
diff --git a/core/tasks/check_boot_jars/package_whitelist.txt b/core/tasks/check_boot_jars/package_whitelist.txt
index 3a1ca23..3cb6e28 100644
--- a/core/tasks/check_boot_jars/package_whitelist.txt
+++ b/core/tasks/check_boot_jars/package_whitelist.txt
@@ -38,6 +38,7 @@
 java\.util\.prefs
 java\.util\.regex
 java\.util\.spi
+java\.util\.stream
 java\.util\.zip
 javax\.crypto
 javax\.crypto\.interfaces
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 398e01a..66b6e64 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -113,7 +113,7 @@
   # Can be an arbitrary string, but must be a single word.
   #
   # If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-  PLATFORM_SECURITY_PATCH := 2016-03-18
+  PLATFORM_SECURITY_PATCH := 2016-04-02
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"