[PATCH] [X86] Convert esp-relative movs of function arguments to pushes, step 2

[Michael Kuperstein]

Removed a horrible hack that was, in addition to being horrible, completely wrong, and added a test-case to cover the issue.

Also, ping?


http://reviews.llvm.org/D6789

Files:
  lib/Target/X86/CMakeLists.txt
  lib/Target/X86/X86.h
  lib/Target/X86/X86ConvertMovsToPushes.cpp
  lib/Target/X86/X86FastISel.cpp
  lib/Target/X86/X86FrameLowering.cpp
  lib/Target/X86/X86FrameLowering.h
  lib/Target/X86/X86InstrCompiler.td
  lib/Target/X86/X86MachineFunctionInfo.h
  lib/Target/X86/X86RegisterInfo.cpp
  lib/Target/X86/X86TargetMachine.cpp
  test/CodeGen/X86/inalloca-invoke.ll
  test/CodeGen/X86/movtopush.ll

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