[PATCH] D124060: [PowerPC] Enable CR bits support for Power8 and above.

[Amy Kwan via Phabricator via cfe-commits]

amyk created this revision.
amyk added reviewers: PowerPC, nemanjai, power-llvm-team.
amyk added projects: LLVM, clang, PowerPC.
Herald added subscribers: shchenz, hiraditya.
Herald added a project: All.
amyk requested review of this revision.
Herald added a subscriber: cfe-commits.

This patch turns on support for CR bit accesses for Power8 and above. The reason why CR bits are turned
on as the default for Power8 and above is that because later architectures make use of builtins and
instructions that require CR bit accesses (such as the use of `setbc` in the vector string isolate predicate
and bcd builtins on Power10).

This patch also adds the clang portion to allow for turning on CR bits in the front end if the user so desires to.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124060

Files:
  clang/lib/Basic/Targets/PPC.cpp
  clang/lib/Basic/Targets/PPC.h
  clang/test/Driver/ppc-crbits.cpp
  llvm/lib/Target/PowerPC/PPC.td
  llvm/test/CodeGen/PowerPC/addegluecrash.ll
  llvm/test/CodeGen/PowerPC/f128-branch-cond.ll
  llvm/test/CodeGen/PowerPC/fast-isel-fcmp-nan.ll
  llvm/test/CodeGen/PowerPC/fp-strict-fcmp-noopt.ll
  llvm/test/CodeGen/PowerPC/fp64-to-int16.ll
  llvm/test/CodeGen/PowerPC/pcrel-byte-loads.ll

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