[PATCH] D152914: [Draft] Make __builtin_cpu builtins target-independent

[Nemanja Ivanovic via Phabricator via cfe-commits]

nemanjai created this revision.
nemanjai added reviewers: PowerPC, RKSimon, pengfei, arsenm, t.p.northover.
Herald added subscribers: steven.zhang, kbarton, hiraditya.
Herald added a project: All.
nemanjai requested review of this revision.
Herald added subscribers: jdoerfert, wdng.
Herald added projects: clang, LLVM.

This is just a proposal patch for a possible direction we can extend these builtins to other targets as well as an implementation for PowerPC.

This adds a new instruction similar to `LOAD_STACK_GUARD` that is meant to load things from fixed addresses. The new instruction has semantics that are a superset of what `LOAD_STACK_GUARD` does so the two can be folded into one.

My hope with this patch is to collect feedback from the community about the direction, so please provide any feedback you may have.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152914

Files:
  clang/include/clang/Basic/Builtins.def
  clang/include/clang/Basic/BuiltinsX86.def
  clang/include/clang/Basic/TargetInfo.h
  clang/lib/Basic/Targets/PPC.cpp
  clang/lib/Basic/Targets/PPC.h
  clang/lib/Basic/Targets/X86.h
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/lib/Sema/SemaChecking.cpp
  clang/test/CodeGen/builtin-cpu-supports.c
  clang/test/Sema/builtin-cpu-supports.c
  llvm/include/llvm/Analysis/TargetLibraryInfo.h
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/include/llvm/IR/Intrinsics.td
  llvm/include/llvm/Support/TargetOpcodes.def
  llvm/include/llvm/Target/Target.td
  llvm/include/llvm/TargetParser/PPCTargetParser.def
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
  llvm/lib/Target/PowerPC/PPCISelLowering.cpp
  llvm/lib/Target/PowerPC/PPCISelLowering.h
  llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
  llvm/lib/Target/PowerPC/PPCSubtarget.h
  llvm/lib/Target/PowerPC/PPCTargetMachine.h
  llvm/test/CodeGen/PowerPC/cpu-supports.ll

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