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[AArch64] Generate zeroing forms of certain SVE2.2 instructions (5/11) #116831

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Merged
merged 3 commits into from
Jan 21, 2025
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[AArch64] Generate zeroing forms of certain SVE2.2 instructions (5/11) #116831

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0ce47f5
[AArch64] Generate zeroing forms of certain SVE2.2 instructions (5/11)
momchil-velikov Nov 19, 2024
0eed0b6
[fixup] Rebase and add tests for the new all-true patterns
momchil-velikov Dec 20, 2024
4181a33
[fixup] Update tests, change undef to poison
momchil-velikov Dec 20, 2024
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4 changes: 2 additions & 2 deletions llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -4277,8 +4277,8 @@ let Predicates = [HasSVE2p2orSME2p2] in {
defm FCVTZS_ZPzZ : sve_fp_z2op_p_zd_d<0b0, "fcvtzs", "int_aarch64_sve_fcvtzs", AArch64fcvtzs_mt>;
defm FCVTZU_ZPzZ : sve_fp_z2op_p_zd_d<0b1, "fcvtzu", "int_aarch64_sve_fcvtzu", AArch64fcvtzu_mt>;
// Integer convert to floating-point, zeroing predicate
defm SCVTF_ZPzZ : sve_fp_z2op_p_zd_c<0b0, "scvtf">;
defm UCVTF_ZPzZ : sve_fp_z2op_p_zd_c<0b1, "ucvtf">;
defm SCVTF_ZPzZ : sve_fp_z2op_p_zd_c<0b0, "scvtf", "int_aarch64_sve_scvtf", AArch64scvtf_mt>;
defm UCVTF_ZPzZ : sve_fp_z2op_p_zd_c<0b1, "ucvtf", "int_aarch64_sve_ucvtf", AArch64ucvtf_mt>;
// Signed integer base 2 logarithm of fp value, zeroing predicate
defm FLOGB_ZPzZ : sve_fp_z2op_p_zd_d_flogb<"flogb">;

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11 changes: 10 additions & 1 deletion llvm/lib/Target/AArch64/SVEInstrFormats.td
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Expand Up @@ -3306,14 +3306,23 @@ multiclass sve_fp_z2op_p_zd_d<bit U, string asm, string int_op, SDPatternOperato
defm : SVE_1_Op_PassthruUndefZero_Pat<nxv2i64, ir_op, nxv2i1, nxv2f64, !cast<Instruction>(NAME # _DtoD)>;
}

multiclass sve_fp_z2op_p_zd_c<bit U, string asm> {
multiclass sve_fp_z2op_p_zd_c<bit U, string asm, string int_op, SDPatternOperator ir_op> {
def _HtoH : sve_fp_z2op_p_zd<{ 0b011001, U }, asm, ZPR16, ZPR16>;
def _StoH : sve_fp_z2op_p_zd<{ 0b011010, U }, asm, ZPR32, ZPR16>;
def _StoS : sve_fp_z2op_p_zd<{ 0b101010, U }, asm, ZPR32, ZPR32>;
def _StoD : sve_fp_z2op_p_zd<{ 0b111000, U }, asm, ZPR32, ZPR64>;
def _DtoS : sve_fp_z2op_p_zd<{ 0b111010, U }, asm, ZPR64, ZPR32>;
def _DtoH : sve_fp_z2op_p_zd<{ 0b011011, U }, asm, ZPR64, ZPR16>;
def _DtoD : sve_fp_z2op_p_zd<{ 0b111011, U }, asm, ZPR64, ZPR64>;

defm : SVE_3_Op_UndefZero_Pat<nxv4f32, !cast<SDPatternOperator>(int_op # _f32i64), nxv4f32, nxv2i1, nxv2i64, !cast<Instruction>(NAME # _DtoS)>;
defm : SVE_3_Op_UndefZero_Pat<nxv2f64, !cast<SDPatternOperator>(int_op # _f64i32), nxv2f64, nxv2i1, nxv4i32, !cast<Instruction>(NAME # _StoD)>;
defm : SVE_3_Op_UndefZero_Pat<nxv8f16, !cast<SDPatternOperator>(int_op # _f16i32), nxv8f16, nxv4i1, nxv4i32, !cast<Instruction>(NAME # _StoH)>;
defm : SVE_3_Op_UndefZero_Pat<nxv8f16, !cast<SDPatternOperator>(int_op # _f16i64), nxv8f16, nxv2i1, nxv2i64, !cast<Instruction>(NAME # _DtoH)>;

defm : SVE_1_Op_PassthruUndefZero_Pat<nxv8f16, ir_op, nxv8i1,nxv8i16, !cast<Instruction>(NAME # _HtoH)>;
defm : SVE_1_Op_PassthruUndefZero_Pat<nxv4f32, ir_op, nxv4i1,nxv4i32, !cast<Instruction>(NAME # _StoS)>;
defm : SVE_1_Op_PassthruUndefZero_Pat<nxv2f64, ir_op, nxv2i1,nxv2i64, !cast<Instruction>(NAME # _DtoD)>;
}

multiclass sve_fp_z2op_p_zd_d_flogb<string asm> {
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