[PATCH] D154168: [X86] Split SDISel call lowering out to its own file

[Reid Kleckner via Phabricator via llvm-commits]

rnk created this revision.
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X86ISelLoewring is unbearably slow to compile. Split "the important
stuff", which to me at least is call lowering, into it's own file.

Now I can test calling convention changes with <5s rebuilds. The rest of
X86ISelLowering is still a disaster zone of slow compilation, but this
seems like a good incremental step forward, similar to the way
globalisel call lowering is structured. They even stole the proper file
name, X86CallLowering.cpp.

clang-format complains, but I didn't want to reformat because it will make it
harder for git rename detection and blame tools.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D154168

Files:
  llvm/lib/Target/X86/CMakeLists.txt
  llvm/lib/Target/X86/X86ISelCallLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.h
  llvm/utils/gn/secondary/llvm/lib/Target/X86/BUILD.gn

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