[PATCH] D117247: [RISCV] Add inline expansion for vector fround.

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jan 13 13:17:42 PST 2022


craig.topper created this revision.
craig.topper added reviewers: frasercrmck, rogfer01, khchen, kito-cheng, arcbbb.
Herald added subscribers: VincentWu, luke957, achieveartificialintelligence, vkmr, evandro, luismarques, apazos, sameer.abuasal, pengfei, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, edward-jones, zzheng, jrtc27, niosHD, sabuasal, simoncook, johnrusso, rbar, asb, hiraditya.
craig.topper requested review of this revision.
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This avoids a crash for scalable vectors and or scalarization for
fixed vectors.

The algorithm is different enough that I don't think it makes sense
to merge with ceil/floor/trunc. Algorithm is adapted from gcc's X86
SSE2 output.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D117247

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-fp.ll
  llvm/test/CodeGen/RISCV/rvv/fround-sdnode.ll

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