[PATCH] [MSan][MIPS] VarArgHelper for MIPS64

[Mohit Bhakkad]

REPOSITORY
  rL LLVM

================
Comment at: lib/Transforms/Instrumentation/MemorySanitizer.cpp:2889
@@ +2888,3 @@
+      if (ArgSize < 8)
+        VAArgOffset += ArgSize;
+#endif
----------------
eugenis wrote:
> Should it be += (8 - ArgSize) ?
> I assume each argument is extended to 8 bytes.
> 
For variable args, types char and short int are automatically promoted to int, so anything less than size 8 is of size 4.
So  //+= (8 - ArgSize) //and //+= ArgSize// should work same.

http://reviews.llvm.org/D7182

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