51 lines
2.3 KiB
TableGen
51 lines
2.3 KiB
TableGen
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//===-- RISCVInstrInfoZicond.td ----------------------------*- tablegen -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the RISC-V instructions from the standard Integer
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// Conditional operations extension (Zicond).
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// RISC-V specific DAG Nodes.
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//===----------------------------------------------------------------------===//
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def riscv_czero_eqz : SDNode<"RISCVISD::CZERO_EQZ", SDTIntBinOp>;
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def riscv_czero_nez : SDNode<"RISCVISD::CZERO_NEZ", SDTIntBinOp>;
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//===----------------------------------------------------------------------===//
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// Instructions
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//===----------------------------------------------------------------------===//
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let Predicates = [HasStdExtZicond] in {
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def CZERO_EQZ : ALU_rr<0b0000111, 0b101, "czero.eqz">,
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Sched<[WriteIALU, ReadIALU, ReadIALU]>;
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def CZERO_NEZ : ALU_rr<0b0000111, 0b111, "czero.nez">,
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Sched<[WriteIALU, ReadIALU, ReadIALU]>;
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} // Predicates = [HasStdExtZicond]
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//===----------------------------------------------------------------------===//
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// Pseudo-instructions and codegen patterns
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//===----------------------------------------------------------------------===//
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let Predicates = [HasStdExtZicond] in {
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def : Pat<(XLenVT (riscv_czero_eqz GPR:$rs1, GPR:$rc)),
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(CZERO_EQZ GPR:$rs1, GPR:$rc)>;
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def : Pat<(XLenVT (riscv_czero_nez GPR:$rs1, GPR:$rc)),
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(CZERO_NEZ GPR:$rs1, GPR:$rc)>;
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def : Pat<(XLenVT (riscv_czero_eqz GPR:$rs1, (riscv_setne (XLenVT GPR:$rc)))),
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(CZERO_EQZ GPR:$rs1, GPR:$rc)>;
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def : Pat<(XLenVT (riscv_czero_eqz GPR:$rs1, (riscv_seteq (XLenVT GPR:$rc)))),
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(CZERO_NEZ GPR:$rs1, GPR:$rc)>;
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def : Pat<(XLenVT (riscv_czero_nez GPR:$rs1, (riscv_setne (XLenVT GPR:$rc)))),
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(CZERO_NEZ GPR:$rs1, GPR:$rc)>;
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def : Pat<(XLenVT (riscv_czero_nez GPR:$rs1, (riscv_seteq (XLenVT GPR:$rc)))),
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(CZERO_EQZ GPR:$rs1, GPR:$rc)>;
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} // Predicates = [HasStdExtZicond]
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