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[RISCV] Simplify MIPS CCMov patterns. NFC #125318

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merged 1 commit into from
Feb 1, 2025
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[RISCV] Simplify MIPS CCMov patterns. NFC #125318

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17 changes: 3 additions & 14 deletions llvm/lib/Target/RISCV/RISCVInstrInfoXMips.td
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Original file line number Diff line number Diff line change
Expand Up @@ -116,24 +116,13 @@ def MIPS_CCMOV : RVInstR4<0b11, 0b011, OPC_CUSTOM_0, (outs GPR:$rd),
}

let Predicates = [UseCCMovInsn] in {
def : Pat<(select (XLenVT (setne (XLenVT GPR:$rs2), (XLenVT 0))),
def : Pat<(select (riscv_setne (XLenVT GPR:$rs2)),
(XLenVT GPR:$rs1), (XLenVT GPR:$rs3)),
(MIPS_CCMOV GPR:$rs1, GPR:$rs2, GPR:$rs3)>;
def : Pat<(select (XLenVT (setne (XLenVT GPR:$x), (XLenVT simm12_plus1:$y))),
(XLenVT GPR:$rs1), (XLenVT GPR:$rs3)),
(MIPS_CCMOV GPR:$rs1, (ADDI GPR:$x, (NegImm simm12_plus1:$y)), GPR:$rs3)>;
def : Pat<(select (XLenVT (setne (XLenVT GPR:$x), (XLenVT GPR:$y))),
(XLenVT GPR:$rs1), (XLenVT GPR:$rs3)),
(MIPS_CCMOV GPR:$rs1, (XOR GPR:$x, GPR:$y), GPR:$rs3)>;
def : Pat<(select (XLenVT (seteq (XLenVT GPR:$rs2), (XLenVT 0))),
def : Pat<(select (riscv_seteq (XLenVT GPR:$rs2)),
(XLenVT GPR:$rs3), (XLenVT GPR:$rs1)),
(MIPS_CCMOV GPR:$rs1, GPR:$rs2, GPR:$rs3)>;
def : Pat<(select (XLenVT (seteq (XLenVT GPR:$x), (XLenVT simm12_plus1:$y))),
(XLenVT GPR:$rs3), (XLenVT GPR:$rs1)),
(MIPS_CCMOV GPR:$rs1, (ADDI GPR:$x, (NegImm simm12_plus1:$y)), GPR:$rs3)>;
def : Pat<(select (XLenVT (seteq (XLenVT GPR:$x), (XLenVT GPR:$y))),
(XLenVT GPR:$rs3), (XLenVT GPR:$rs1)),
(MIPS_CCMOV GPR:$rs1, (XOR GPR:$x, GPR:$y), GPR:$rs3)>;

def : Pat<(select (XLenVT GPR:$rs2), (XLenVT GPR:$rs1), (XLenVT GPR:$rs3)),
(MIPS_CCMOV GPR:$rs1, GPR:$rs2, GPR:$rs3)>;
}
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