[PATCH] [CodeGen] Reuse stack space from unused function results (with more accurate unused result detection)

[Leny Kholodov]

- ReturnValueSlot class size optimization using packed to PointerIntPair<> flags;
- minor changes.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10042

Files:
  lib/CodeGen/CGCall.cpp
  lib/CodeGen/CGCall.h
  lib/CodeGen/CGExprAgg.cpp
  test/CodeGenCXX/stack-reuse-miscompile.cpp
  test/CodeGenCXX/stack-reuse.cpp

EMAIL PREFERENCES
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