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[RISCV] Add nf argument to VReg class instead overriding with a let. NFC #131235

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Merged
merged 2 commits into from
Mar 14, 2025
Merged

[RISCV] Add nf argument to VReg class instead overriding with a let. NFC #131235

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9a4a055
[RISCV] Add nf argument to VReg class instead overriding with a let. NFC
topperc Mar 13, 2025
9b5c07d
Merge remote-tracking branch 'origin/main' into pr/nf-vreg
topperc Mar 14, 2025
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23 changes: 11 additions & 12 deletions llvm/lib/Target/RISCV/RISCVRegisterInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -710,12 +710,13 @@ foreach m = [1, 2, 4] in {
}
}

class VReg<list<ValueType> regTypes, dag regList, int Vlmul>
class VReg<list<ValueType> regTypes, dag regList, int Vlmul, int nf = 1>
: RISCVRegisterClass<regTypes,
64, // The maximum supported ELEN is 64.
regList> {
let IsVRegClass = 1;
let VLMul = Vlmul;
let NF = nf;

let Size = !mul(VLMul, NF, 64);
let CopyCost = !mul(VLMul, NF);
Expand Down Expand Up @@ -799,17 +800,15 @@ class VTupRegList<int LMUL, int NF> {

foreach m = LMULList in {
foreach nf = NFList<m>.L in {
let NF = nf in {
def "VRN" # nf # "M" # m # "NoV0"
: VReg<VTupRegList<m, nf>.L,
(add !cast<RegisterTuples>("VN" # nf # "M" # m # "NoV0")),
m>;
def "VRN" # nf # "M" # m
: VReg<VTupRegList<m, nf>.L,
(add !cast<RegisterTuples>("VN" # nf # "M" # m # "NoV0"),
!cast<RegisterTuples>("VN" # nf # "M" # m # "V0")),
m>;
}
def "VRN" # nf # "M" # m # "NoV0"
: VReg<VTupRegList<m, nf>.L,
(add !cast<RegisterTuples>("VN" # nf # "M" # m # "NoV0")),
m, nf>;
def "VRN" # nf # "M" # m
: VReg<VTupRegList<m, nf>.L,
(add !cast<RegisterTuples>("VN" # nf # "M" # m # "NoV0"),
!cast<RegisterTuples>("VN" # nf # "M" # m # "V0")),
m, nf>;
}
}

Expand Down