[RISCV][NFC] Simplify uses of PatFrag binop_oneuse

[benshi001]

llvm/lib/Target/RISCV/RISCVInstrInfo.td

1244

This is not used. So we can remove it.

[craig.topper]

LGTM

llvm/lib/Target/RISCV/RISCVInstrInfo.td

 
 class binop_oneuse<SDPatternOperator operator>
     : PatFrag<(ops node:$A, node:$B),
               (operator node:$A, node:$B), [{
   return N->hasOneUse();
 }]>;
 
 def and_oneuse : binop_oneuse<and>;
-def add_oneuse : binop_oneuse<add>;
 def mul_oneuse : binop_oneuse<mul>;
 
 def mul_const_oneuse : PatFrag<(ops node:$A, node:$B),
                                (mul node:$A, node:$B), [{
   if (auto *N1C = dyn_cast<ConstantSDNode>(N->getOperand(1)))
     return N1C->hasOneUse();
   return false;
 }]>;

llvm/lib/Target/RISCV/RISCVInstrInfoZb.td

 // Use SRLI to clear the LSBs and SHXADD_UW to mask and shift.
 def : Pat<(i64 (add (and GPR:$rs1, 0x1FFFFFFFE), non_imm12:$rs2)),
           (SH1ADD_UW (SRLI GPR:$rs1, 1), GPR:$rs2)>;
 def : Pat<(i64 (add (and GPR:$rs1, 0x3FFFFFFFC), non_imm12:$rs2)),
           (SH2ADD_UW (SRLI GPR:$rs1, 2), GPR:$rs2)>;
 def : Pat<(i64 (add (and GPR:$rs1, 0x7FFFFFFF8), non_imm12:$rs2)),
           (SH3ADD_UW (SRLI GPR:$rs1, 3), GPR:$rs2)>;
 
-def : Pat<(i64 (mul (binop_oneuse<and> GPR:$r, 0xFFFFFFFF), C3LeftShiftUW:$i)),
+def : Pat<(i64 (mul (and_oneuse GPR:$r, 0xFFFFFFFF), C3LeftShiftUW:$i)),
           (SH1ADD (SLLI_UW GPR:$r, (TrailingZeros C3LeftShiftUW:$i)),
                   (SLLI_UW GPR:$r, (TrailingZeros C3LeftShiftUW:$i)))>;
-def : Pat<(i64 (mul (binop_oneuse<and> GPR:$r, 0xFFFFFFFF), C5LeftShiftUW:$i)),
+def : Pat<(i64 (mul (and_oneuse GPR:$r, 0xFFFFFFFF), C5LeftShiftUW:$i)),
           (SH2ADD (SLLI_UW GPR:$r, (TrailingZeros C5LeftShiftUW:$i)),
                   (SLLI_UW GPR:$r, (TrailingZeros C5LeftShiftUW:$i)))>;
-def : Pat<(i64 (mul (binop_oneuse<and> GPR:$r, 0xFFFFFFFF), C9LeftShiftUW:$i)),
+def : Pat<(i64 (mul (and_oneuse GPR:$r, 0xFFFFFFFF), C9LeftShiftUW:$i)),
           (SH3ADD (SLLI_UW GPR:$r, (TrailingZeros C9LeftShiftUW:$i)),
                   (SLLI_UW GPR:$r, (TrailingZeros C9LeftShiftUW:$i)))>;
 } // Predicates = [HasStdExtZba, IsRV64]
 
 let Predicates = [HasStdExtZbcOrZbkc] in {
 def : PatGprGpr<int_riscv_clmul, CLMUL>;
 def : PatGprGpr<int_riscv_clmulh, CLMULH>;
 } // Predicates = [HasStdExtZbcOrZbkc]
 
 let Predicates = [HasStdExtZbc] in
 def : PatGprGpr<int_riscv_clmulr, CLMULR>;
 
 let Predicates = [HasStdExtZbkx] in {
 def : PatGprGpr<int_riscv_xperm4, XPERM4>;
 def : PatGprGpr<int_riscv_xperm8, XPERM8>;
 } // Predicates = [HasStdExtZbkx]