diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 92eeee5..b685459 100755
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -138,15 +138,7 @@
 TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
 TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)
 
-# XXX: Not sure this is still needed. Must check with our toolchains.
-TARGET_GLOBAL_CPPFLAGS += \
-			-fno-use-cxa-atexit
-
 TARGET_GLOBAL_CFLAGS += $(arch_variant_cflags)
-TARGET_GLOBAL_CFLAGS += -mmmx
-TARGET_GLOBAL_CFLAGS += -msse
-TARGET_GLOBAL_CFLAGS += -DUSE_SSE2 -msse2
-TARGET_GLOBAL_CFLAGS += -msse3
 
 ifeq ($(ARCH_X86_HAVE_SSSE3),true)   # yes, really SSSE3, not SSE3!
     TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 -mssse3
@@ -167,19 +159,6 @@
     TARGET_GLOBAL_CFLAGS += -maes
 endif
 
-# XXX: This flag is probably redundant. I believe our toolchain always sets
-# it by default. Consider for removal.
-#
-TARGET_GLOBAL_CFLAGS += -mbionic
-
-# XXX: This flag is probably redundant. The macro should be defined by our
-# toolchain binaries automatically (as a compiler built-in).
-# Check with: $BINPREFIX-gcc -dM -E < /dev/null
-#
-# Consider for removal.
-#
-TARGET_GLOBAL_CFLAGS += -D__ANDROID__
-
 TARGET_GLOBAL_LDFLAGS += -m32
 
 TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack
diff --git a/core/combo/TARGET_linux-x86_64.mk b/core/combo/TARGET_linux-x86_64.mk
index 86d29f5..c0eefdd 100755
--- a/core/combo/TARGET_linux-x86_64.mk
+++ b/core/combo/TARGET_linux-x86_64.mk
@@ -138,13 +138,7 @@
 TARGET_ANDROID_CONFIG_CFLAGS := -include $(android_config_h) -I $(dir $(android_config_h))
 TARGET_GLOBAL_CFLAGS += $(TARGET_ANDROID_CONFIG_CFLAGS)
 
-# XXX: Not sure this is still needed. Must check with our toolchains.
-TARGET_GLOBAL_CPPFLAGS += \
-			-fno-use-cxa-atexit
-
-TARGET_GLOBAL_CFLAGS += $(arch_variant_cflags) \
-			-mstackrealign \
-			-mfpmath=sse
+TARGET_GLOBAL_CFLAGS += $(arch_variant_cflags)
 
 ifeq ($(ARCH_X86_HAVE_SSSE3),true)   # yes, really SSSE3, not SSE3!
     TARGET_GLOBAL_CFLAGS += -DUSE_SSSE3 -mssse3
@@ -165,19 +159,6 @@
     TARGET_GLOBAL_CFLAGS += -maes
 endif
 
-# XXX: This flag is probably redundant. I believe our toolchain always sets
-# it by default. Consider for removal.
-#
-TARGET_GLOBAL_CFLAGS += -mbionic
-
-# XXX: This flag is probably redundant. The macro should be defined by our
-# toolchain binaries automatically (as a compiler built-in).
-# Check with: $BINPREFIX-gcc -dM -E < /dev/null
-#
-# Consider for removal.
-#
-TARGET_GLOBAL_CFLAGS += -D__ANDROID__
-
 TARGET_GLOBAL_LDFLAGS += -m64
 
 TARGET_GLOBAL_LDFLAGS += -Wl,-z,noexecstack
diff --git a/core/llvm_config.mk b/core/llvm_config.mk
index b870558..19fe790 100644
--- a/core/llvm_config.mk
+++ b/core/llvm_config.mk
@@ -71,6 +71,7 @@
   RS_TRIPLE := i686-unknown-linux
   CLANG_CONFIG_EXTRA_ASFLAGS += \
     -target i686-linux-android \
+    -msse3 \
     -nostdlibinc \
     -B$(TARGET_TOOLCHAIN_ROOT)/x86_64-linux-android/bin
   CLANG_CONFIG_EXTRA_CFLAGS += $(CLANG_CONFIG_EXTRA_ASFLAGS)