[PATCH] D13999: X86ISelLowering: Support tail calls to/from thiscall functions

[Hans Wennborg via llvm-commits]

hans created this revision.
hans added reviewers: rnk, hansw.
hans added a subscriber: llvm-commits.

This saves 16.5 KB on a Clang bootstrap. I'm hoping for more on Chromium, but haven't measured yet.

http://reviews.llvm.org/D13999

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/tailcall-thiscall.ll

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