[PATCH] [Compiler-rt][Sanitizer][MSan][MIPS] Adding support for MIPS32

[Alexey Samsonov]

Deferring this to Evgeniy. Just a couple of drive-by comments.

================
Comment at: lib/msan/msan.cc:29
@@ +28,3 @@
+#if defined(__mips__)
+#define TLS_TCB_OFFSET       0x7000
+#define TLS_PRE_TCB_SIZE       0x08
----------------
Can you #define those things where they are actually used for the first time?

================
Comment at: lib/msan/msan.cc:516
@@ -511,1 +515,3 @@
   u64 p;
+  #if defined(__mips__)
+  char *ptr;
----------------
#if should start from the beginning of the line:

  #if defined(__mips__)
    char *ptr;
    // more code
  #else
    // more code
  #endif

http://reviews.llvm.org/D5672