[PATCH] [asm-instrumentation] Removed assembly helpers for asan.

[Evgeniy Stepanov]

LGTM, great.

================
Comment at: lib/asan/tests/asan_asm_test.cc:200
@@ +199,3 @@
+#if defined(__i386__)
+  TestAsmWrite<U8>("WRITE of size 4");
+#else
----------------
Perhaps it's better to just skip the U8 test on x86_32 - it's not really a 64-bit store, and it duplicates the U4 test.

http://reviews.llvm.org/D4193