[PATCH] tsan: implement suppressions for top frame only

[Alexey Samsonov]

LGTM


================
Comment at: lib/tsan/rtl/tsan_suppressions.cc:98
@@ -96,1 +97,3 @@
 
+uptr IsSuppressed(const char *stype, const AddressInfo &info,
+    Suppression **sp) {
----------------
make this function static?

http://reviews.llvm.org/D10686

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