[PATCH] [Msan] Generalize instrumentation code to support FreeBSD mapping

[Evgeniy Stepanov]

I like this approach.

FYI, there is a change that adds more platforms here: http://reviews.llvm.org/D6146.


================
Comment at: lib/Transforms/Instrumentation/MemorySanitizer.cpp:211
@@ +210,3 @@
+
+static const MemoryMapParams DefaultMemoryMapParams32 = {
+  0x000080000000,  // AndMask
----------------
I think we'd better call it "linux" instead of default, and mention "x86_64" somewhere, too.

http://reviews.llvm.org/D6666

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