[PATCH] D48374: [mips] Sign extend i32 return values on MIPS64

[Stefan Maksimovic via Phabricator via llvm-commits]

smaksimovic updated this revision to Diff 155342.
smaksimovic edited the summary of this revision.
smaksimovic added a comment.
This revision is now accepted and ready to land.

Added target hooks to replace the sign_extend with the sign_extend_inreg node which will get pattern matched with the SLL64_64 thus providing the needed sign extension.
The second target hook is introduced to keep the sign_extend_inreg node from being combined away.


https://reviews.llvm.org/D48374

Files:
  include/llvm/CodeGen/TargetLowering.h
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  lib/Target/Mips/Mips64InstrInfo.td
  lib/Target/Mips/Mips64r6InstrInfo.td
  lib/Target/Mips/MipsISelLowering.cpp
  lib/Target/Mips/MipsISelLowering.h
  test/CodeGen/Mips/delay-slot-kill.ll
  test/CodeGen/Mips/llvm-ir/not.ll
  test/CodeGen/Mips/llvm-ir/or.ll
  test/CodeGen/Mips/llvm-ir/select-int.ll
  test/CodeGen/Mips/llvm-ir/xor.ll
  test/CodeGen/Mips/shrink-wrapping.ll

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