[PATCH] [TSan][MIPS] Adding support for MIPS64

[Alexey Samsonov]

================
Comment at: lib/tsan/CMakeLists.txt:103
@@ -102,1 +102,3 @@
 
+if(CAN_TARGET_mips64 AND UNIX AND NOT APPLE)
+  set(arch "mips64")
----------------
Please merge this into x86_64 case somehow.

================
Comment at: lib/tsan/rtl/tsan_interceptors.cc:44
@@ +43,3 @@
+const int kSigCount = 128;
+bool guard_aquired;
+#else
----------------
acquired (here and below)

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Comment at: lib/tsan/rtl/tsan_interceptors.cc:661
@@ +660,3 @@
+#ifdef __mips__
+  // For mips memset gets called before a call to __cxa_guard_aquire
+  // which causes a crash in REAL(pthread_create) during initialization
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I don't understand this comment. Why does REAL(pthread_create) crash?

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Comment at: lib/tsan/rtl/tsan_interface_atomic.cc:43
@@ -42,3 +42,3 @@
 
 #ifndef TSAN_GO
 // Protects emulation of 128-bit atomic operations.
----------------
use
#if !defined(TSAN_GO) && defined(__SIZEOF_INT128__)

Or, better, fix this macro definition in Clang.

================
Comment at: lib/tsan/rtl/tsan_platform_linux.cc:318
@@ -314,2 +317,3 @@
       continue;
+#if SANITIZER_CAN_USE_ALLOCATOR64
     if (p >= kHeapMemEnd &&
----------------
Please reduce the amount of #ifs here (e.g. introduce a helper function).

http://reviews.llvm.org/D6291