[PATCH] D146425: [SystemZ] Enable AtomicExpandPass for i128

[Jonas Paulsson via Phabricator via llvm-commits]

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- Set MaxAtomicPromoteWidth and MaxAtomicInlineWidth to 128 in the front end. This will result in LLVM I/R in the aligned cases and libcalls otherwise.

- Some FE tests for smaller integer types as well.

- Enable AtomicExpandPass.

- Set MaxAtomicSizeInBitsSupported to 128.

- Fix RegCoalescer for these types of loops, which already has a hack for i128 in the SystemZ backend.


https://reviews.llvm.org/D146425

Files:
  clang/lib/Basic/Targets/SystemZ.h
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i128-16Al.c
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i128-8Al.c
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i16.c
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i32.c
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i64.c
  clang/test/CodeGen/SystemZ/gnu-atomic-builtins-i8.c
  llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
  llvm/lib/Target/SystemZ/SystemZISelLowering.h
  llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp
  llvm/lib/Target/SystemZ/SystemZTargetMachine.cpp
  llvm/test/CodeGen/SystemZ/atomicrmw-ops-i128.ll

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