LuoYuanke added inline comments.
================ Comment at: llvm/lib/Target/X86/X86InstrAVX512.td:13640 + (v4f32 (OpNode VR128X:$src1, VR128X:$src2)), + 0, 0, 0, X86selects, "@earlyclobber $dst">, Sched<[sched.XMM]>; + defm rm : AVX512_maskable<opc, MRMSrcMem, f32x_info, (outs VR128X:$dst), ---------------- pengfei wrote: > LuoYuanke wrote: > > I didn't see this flag for other scalar instructions, why we need it for > > complex instruction? > Because all complex instructions have constrains "dst != src1 && dst != > src2". We use earlyclobber to avoid the dst been assigned to src1 or src2. Got it. Thanks! Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D105269/new/ https://reviews.llvm.org/D105269 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
