[PATCH] [ASan] Use less shadow on Win 32-bit

[Timur Iskhodzhanov]

================
Comment at: lib/asan/asan_rtl.cc:334
@@ +333,3 @@
+  kHighMemEnd = kHighMemEnd | (GetPageSizeCached() - 1);
+  while (kHighMemBeg % GetPageSizeCached())
+    kHighMemEnd += GetPageSizeCached();
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Alexey Samsonov wrote:
> I don't understand this loop.
That's covered by the above "make sure everything is fine" comment.

  Not only we want the kHighMemEnd to be page-aligned,
  we also want kHighMemBeg to be page-aligned in order to map shadow.

Should I add this answer to the comment?


http://llvm-reviews.chandlerc.com/D1139