[PATCH] D62565: [PowerPC] Exploiting to use mtvsrdd instruction when save called-saved GPR register to VSR registers

[Zixuan Wu via Phabricator via llvm-commits]

wuzish created this revision.
wuzish added reviewers: hfinkel, nemanjai, syzaara.
Herald added subscribers: llvm-commits, jsji, hiraditya, qcolombet.
Herald added a project: LLVM.

Make an exploiting to use mtvsrdd instruction when save called-saved GPR registers to VSR registers.
Because mtvsrdd can save two GPRs together at one time and make the space/time more efficient.


Repository:
  rL LLVM

https://reviews.llvm.org/D62565

Files:
  llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
  llvm/lib/Target/PowerPC/PPCFrameLowering.h
  llvm/test/CodeGen/MIR/PowerPC/prolog_vec_spills.mir

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