crates/cpu/src/decoder/simple_power_isa.rs

@@ -1,7 +1,9 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
 // See Notices.txt for copyright information
 
-use crate::instruction::{AddSubMOp, MOpDestReg, MOpRegNum, OutputIntegerMode};
+use crate::instruction::{
+    AddSubMOp, CompareMOp, CompareMode, MOpDestReg, MOpRegNum, OutputIntegerMode,
+};
 use crate::powerisa_instructions_xml::{
     InstructionBitFieldName, InstructionBitFieldsInner, TextLineItem,
 };
@@ -177,6 +179,8 @@ macro_rules! impl_fields {
 }
 
 impl_fields! {
+    #[name = "BF"]
+    struct FieldBF(FieldCrf);
     #[name = "RA"]
     struct FieldRA(FieldGpr);
     #[name = "RB"]
@@ -189,12 +193,16 @@ impl_fields! {
     struct FieldSi0(SInt<18>);
     #[name = "si1"]
     struct FieldSi1(UInt<16>);
+    #[name = "UI"]
+    struct FieldUI(UInt<16>);
     #[name = "d0"]
     struct FieldAddPcISD0(SInt<10>);
     #[name = "d1"]
     struct FieldAddPcISD1(UInt<5>);
     #[name = "d2"]
     struct FieldAddPcISD2(UInt<1>);
+    #[name = "L"]
+    struct FieldL(Bool);
     #[name = "OE"]
     struct FieldOE(Bool);
     #[name = "R"]
@@ -203,11 +211,18 @@ impl_fields! {
     struct FieldRc(Bool);
 }
 
+/// general-purpose register
 #[hdl]
 struct FieldGpr {
     reg_num: UInt<5>,
 }
 
+/// condition register field -- a 4-bit field of the condition register
+#[hdl]
+struct FieldCrf {
+    reg_num: UInt<3>,
+}
+
 fn gpr(this: impl ToExpr<Type = FieldGpr>) -> Expr<MOpRegNum> {
     MOpRegNum::power_isa_gpr_reg(this.to_expr().reg_num)
 }
@@ -216,6 +231,10 @@ fn gpr_or_zero(this: impl ToExpr<Type = FieldGpr>) -> Expr<MOpRegNum> {
     MOpRegNum::power_isa_gpr_or_zero_reg(this.to_expr().reg_num)
 }
 
+fn crf(this: impl ToExpr<Type = FieldCrf>) -> Expr<MOpRegNum> {
+    MOpRegNum::power_isa_cr_reg(this.to_expr().reg_num)
+}
+
 impl DecodeState {
     fn form(&self) -> &'static str {
         let mut title_words = self
@@ -839,6 +858,172 @@ impl DecodeState {
             },
         );
     }
+    /// for `cmpi`
+    #[hdl]
+    fn decode_cmpi(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldL(l), FieldRA(ra), FieldSI(si))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            #[hdl]
+            let compare_mode = wire();
+            #[hdl]
+            if l {
+                connect(compare_mode, CompareMode.S64());
+            } else {
+                connect(compare_mode, CompareMode.S32());
+            }
+            connect(
+                this.output[0],
+                CompareMOp::compare_i(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value],
+                    si.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    compare_mode,
+                ),
+            );
+        });
+    }
+    /// for `cmp`
+    #[hdl]
+    fn decode_cmp(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldL(l), FieldRA(ra), FieldRB(rb))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            #[hdl]
+            let compare_mode = wire();
+            #[hdl]
+            if l {
+                connect(compare_mode, CompareMode.S64());
+            } else {
+                connect(compare_mode, CompareMode.S32());
+            }
+            connect(
+                this.output[0],
+                CompareMOp::compare(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value, gpr(rb).value],
+                    0.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    compare_mode,
+                ),
+            );
+        });
+    }
+    /// for `cmpli`
+    #[hdl]
+    fn decode_cmpli(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldL(l), FieldRA(ra), FieldUI(ui))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            #[hdl]
+            let compare_mode = wire();
+            #[hdl]
+            if l {
+                connect(compare_mode, CompareMode.U64());
+            } else {
+                connect(compare_mode, CompareMode.U32());
+            }
+            connect(
+                this.output[0],
+                CompareMOp::compare_i(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value],
+                    ui.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    compare_mode,
+                ),
+            );
+        });
+    }
+    /// for `cmpl`
+    #[hdl]
+    fn decode_cmpl(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldL(l), FieldRA(ra), FieldRB(rb))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            #[hdl]
+            let compare_mode = wire();
+            #[hdl]
+            if l {
+                connect(compare_mode, CompareMode.U64());
+            } else {
+                connect(compare_mode, CompareMode.U32());
+            }
+            connect(
+                this.output[0],
+                CompareMOp::compare(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value, gpr(rb).value],
+                    0.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    compare_mode,
+                ),
+            );
+        });
+    }
+    /// for `cmprb`
+    #[hdl]
+    fn decode_cmprb(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldL(l), FieldRA(ra), FieldRB(rb))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            #[hdl]
+            let compare_mode = wire();
+            #[hdl]
+            if l {
+                connect(compare_mode, CompareMode.CmpRBTwo());
+            } else {
+                connect(compare_mode, CompareMode.CmpRBOne());
+            }
+            connect(
+                this.output[0],
+                CompareMOp::compare(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value, gpr(rb).value],
+                    0.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    compare_mode,
+                ),
+            );
+        });
+    }
+    /// for `cmpeqb`
+    #[hdl]
+    fn decode_cmpeqb(&mut self) {
+        self.decode_scope(|this, (FieldBF(bf), FieldRA(ra), FieldRB(rb))| {
+            // TODO: handle SO propagation
+            connect(
+                ArrayVec::len(this.output),
+                1usize.cast_to_static::<Length<_>>(),
+            );
+            connect(
+                this.output[0],
+                CompareMOp::compare(
+                    MOpDestReg::new([crf(bf)], []),
+                    [gpr(ra).value, gpr(rb).value],
+                    0.cast_to_static::<SInt<_>>(),
+                    OutputIntegerMode.Full64(),
+                    CompareMode.CmpEqB(),
+                ),
+            );
+        });
+    }
 }
 
 type DecodeFn = fn(&mut DecodeState);
@@ -982,12 +1167,12 @@ const DECODE_FNS: &[(&[&str], DecodeFn)] = &[
             // TODO
         },
     ),
-    (&["cmpi", "cmp", "cmpli", "cmpl"], |_state| {
-        // TODO
-    }),
-    (&["cmprb", "cmpeqb"], |_state| {
-        // TODO
-    }),
+    (&["cmpi"], DecodeState::decode_cmpi),
+    (&["cmp"], DecodeState::decode_cmp),
+    (&["cmpli"], DecodeState::decode_cmpli),
+    (&["cmpl"], DecodeState::decode_cmpl),
+    (&["cmprb"], DecodeState::decode_cmprb),
+    (&["cmpeqb"], DecodeState::decode_cmpeqb),
     (&["twi", "tw", "tdi", "td"], |_state| {
         // TODO
     }),

crates/cpu/src/instruction.rs

@@ -736,6 +736,120 @@ impl<DestReg: Type, SrcRegWidth: Size> LogicalMOp<DestReg, SrcRegWidth> {
     }
 }
 
+#[hdl]
+pub enum CompareMode {
+    U64,
+    S64,
+    U32,
+    S32,
+    U16,
+    S16,
+    U8,
+    S8,
+    /// compare one ranged byte -- like the PowerISA `cmprb _, 0, ..` instruction
+    CmpRBOne,
+    /// compare two ranged bytes -- like the PowerISA `cmprb _, 1, ..` instruction
+    CmpRBTwo,
+    /// like the PowerISA `cmpeqb` instruction
+    CmpEqB,
+}
+
+impl HdlPartialEqImpl<Self> for CompareMode {
+    #[track_caller]
+    fn cmp_value_eq(
+        lhs: Self,
+        lhs_value: Cow<'_, Self::SimValue>,
+        rhs: Self,
+        rhs_value: Cow<'_, Self::SimValue>,
+    ) -> bool {
+        SimValue::opaque(&SimValue::from_value(lhs, lhs_value.into_owned()))
+            == SimValue::opaque(&SimValue::from_value(rhs, rhs_value.into_owned()))
+    }
+
+    #[track_caller]
+    fn cmp_sim_value_eq(
+        lhs: Cow<'_, SimValue<Self>>,
+        rhs: Cow<'_, SimValue<Self>>,
+    ) -> SimValue<Bool> {
+        (SimValue::opaque(&lhs) == SimValue::opaque(&rhs)).to_sim_value()
+    }
+
+    #[track_caller]
+    fn cmp_sim_value_ne(
+        lhs: Cow<'_, SimValue<Self>>,
+        rhs: Cow<'_, SimValue<Self>>,
+    ) -> SimValue<Bool> {
+        (SimValue::opaque(&lhs) != SimValue::opaque(&rhs)).to_sim_value()
+    }
+
+    #[track_caller]
+    fn cmp_expr_eq(lhs: Expr<Self>, rhs: Expr<Self>) -> Expr<Bool> {
+        lhs.cast_to_bits().cmp_eq(rhs.cast_to_bits())
+    }
+}
+
+common_mop_struct! {
+    #[mapped(<NewDestReg, NewSrcRegWidth> CompareMOp<NewDestReg, NewSrcRegWidth, SrcCount>)]
+    #[hdl(cmp_eq)]
+    pub struct CompareMOp<DestReg: Type, SrcRegWidth: Size, SrcCount: KnownSize> {
+        #[common]
+        pub alu_common: AluCommonMOp<DestReg, SrcRegWidth, SrcCount>,
+        pub compare_mode: CompareMode,
+    }
+}
+
+impl<DestReg: Type, SrcRegWidth: Size> CompareMOp<DestReg, SrcRegWidth, ConstUsize<2>> {
+    #[hdl]
+    pub fn compare<Target: MOpTrait>(
+        dest: impl ToExpr<Type = DestReg>,
+        src: impl ToExpr<Type = Array<UIntType<SrcRegWidth>, 2>>,
+        imm: impl ToExpr<Type = SInt<{ COMMON_MOP_2_IMM_WIDTH }>>,
+        output_integer_mode: impl ToExpr<Type = OutputIntegerMode>,
+        compare_mode: impl ToExpr<Type = CompareMode>,
+    ) -> Expr<Target>
+    where
+        Self: MOpInto<Target>,
+    {
+        MOpInto::mop_into(
+            #[hdl]
+            CompareMOp {
+                alu_common: #[hdl]
+                AluCommonMOp {
+                    common: CommonMOp::new(0_hdl_u0, dest, src, Expr::as_dyn_int(imm.to_expr())),
+                    output_integer_mode,
+                },
+                compare_mode,
+            },
+        )
+    }
+}
+
+impl<DestReg: Type, SrcRegWidth: Size> CompareMOp<DestReg, SrcRegWidth, ConstUsize<1>> {
+    #[hdl]
+    pub fn compare_i<Target: MOpTrait>(
+        dest: impl ToExpr<Type = DestReg>,
+        src: impl ToExpr<Type = Array<UIntType<SrcRegWidth>, 1>>,
+        imm: impl ToExpr<Type = SInt<{ COMMON_MOP_1_IMM_WIDTH }>>,
+        output_integer_mode: impl ToExpr<Type = OutputIntegerMode>,
+        compare_mode: impl ToExpr<Type = CompareMode>,
+    ) -> Expr<Target>
+    where
+        Self: MOpInto<Target>,
+    {
+        MOpInto::mop_into(
+            #[hdl]
+            CompareMOp {
+                alu_common: #[hdl]
+                AluCommonMOp {
+                    common: CommonMOp::new(0_hdl_u0, dest, src, Expr::as_dyn_int(imm.to_expr())),
+                    output_integer_mode,
+                },
+                compare_mode,
+            },
+        )
+    }
+}
+
 common_mop_struct! {
     #[mapped(<NewDestReg, NewSrcRegWidth> BranchMOp<NewDestReg, NewSrcRegWidth>)]
     #[hdl(cmp_eq)]
@@ -753,6 +867,8 @@ mop_enum! {
         AddSub(AddSubMOp<DestReg, SrcRegWidth, ConstUsize<3>>),
         AddSubI(AddSubMOp<DestReg, SrcRegWidth, ConstUsize<2>>),
         Logical(LogicalMOp<DestReg, SrcRegWidth>),
+        Compare(CompareMOp<DestReg, SrcRegWidth, ConstUsize<2>>),
+        CompareI(CompareMOp<DestReg, SrcRegWidth, ConstUsize<1>>),
     }
 }
 

crates/cpu/src/instruction/power_isa.rs

@@ -94,7 +94,7 @@ impl MOpRegNum {
         } else {
             connect_any(
                 power_isa_cr_reg.value,
-                Self::POWER_ISA_CR_1_THRU_7_REG_NUMS.start + field_num,
+                Self::POWER_ISA_CR_1_THRU_7_REG_NUMS.start - 1 + field_num,
             );
         }
         power_isa_cr_reg

crates/cpu/src/unit/alu_branch.rs

@@ -4,8 +4,8 @@
 use crate::{
     config::CpuConfig,
     instruction::{
-        AddSubMOp, AluBranchMOp, AluCommonMOp, COMMON_MOP_SRC_LEN, CommonMOp, LogicalMOp, MOpTrait,
-        OutputIntegerMode, RenamedMOp, UnitOutRegNum,
+        AddSubMOp, AluBranchMOp, AluCommonMOp, COMMON_MOP_SRC_LEN, CommonMOp, CompareMOp,
+        LogicalMOp, MOpTrait, OutputIntegerMode, RenamedMOp, UnitOutRegNum,
     },
     register::{FlagsMode, PRegFlagsPowerISA, PRegFlagsX86, PRegValue},
     unit::{
@@ -244,6 +244,20 @@ fn logical(
     }
 }
 
+#[hdl]
+fn compare<SrcCount: KnownSize>(
+    mop: Expr<CompareMOp<UnitOutRegNum<DynSize>, DynSize, SrcCount>>,
+    flags_mode: Expr<FlagsMode>,
+    src_values: Expr<Array<PRegValue, { COMMON_MOP_SRC_LEN }>>,
+) -> Expr<UnitResultCompleted<()>> {
+    // TODO: finish
+    #[hdl]
+    UnitResultCompleted::<_> {
+        value: PRegValue::zeroed(),
+        extra_out: (),
+    }
+}
+
 #[hdl_module]
 pub fn alu_branch(config: &CpuConfig, unit_index: usize) {
     #[hdl]
@@ -336,6 +350,40 @@ pub fn alu_branch(config: &CpuConfig, unit_index: usize) {
                     },
                 ),
             ),
+            AluBranchMOp::<_, _>::Compare(mop) => connect(
+                unit_base.execute_end,
+                HdlSome(
+                    #[hdl]
+                    ExecuteEnd::<_, _> {
+                        unit_output: #[hdl]
+                        UnitOutput::<_, _> {
+                            which: MOpTrait::dest_reg(mop),
+                            result: UnitResult[()].Completed(compare(
+                                mop,
+                                global_state.flags_mode,
+                                src_values,
+                            )),
+                        },
+                    },
+                ),
+            ),
+            AluBranchMOp::<_, _>::CompareI(mop) => connect(
+                unit_base.execute_end,
+                HdlSome(
+                    #[hdl]
+                    ExecuteEnd::<_, _> {
+                        unit_output: #[hdl]
+                        UnitOutput::<_, _> {
+                            which: MOpTrait::dest_reg(mop),
+                            result: UnitResult[()].Completed(compare(
+                                mop,
+                                global_state.flags_mode,
+                                src_values,
+                            )),
+                        },
+                    },
+                ),
+            ),
         }
     }
 }

crates/cpu/tests/simple_power_isa_decoder.rs

@@ -3,7 +3,9 @@
 
 use cpu::{
     decoder::simple_power_isa::decode_one_insn,
-    instruction::{AddSubMOp, MOp, MOpDestReg, MOpRegNum, OutputIntegerMode},
+    instruction::{
+        AddSubMOp, CompareMOp, CompareMode, MOp, MOpDestReg, MOpRegNum, OutputIntegerMode,
+    },
     util::array_vec::ArrayVec,
 };
 use fayalite::{prelude::*, sim::vcd::VcdWriterDecls, util::RcWriter};
@@ -486,6 +488,181 @@ fn test_cases() -> Vec<TestCase> {
             false,
         ),
     ));
+    retval.push(insn_single(
+        "cmpi 3, 0, 4, 0x1234",
+        0x2d841234,
+        None,
+        CompareMOp::compare_i(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
+            0x1234.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::S32(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpi 3, 1, 4, -0x7655",
+        0x2da489ab,
+        None,
+        CompareMOp::compare_i(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
+            (0x89abu16 as i16).cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::S64(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmp 3, 0, 4, 5",
+        0x7d842800,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::S32(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmp 3, 1, 4, 5",
+        0x7da42800,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::S64(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpli 3, 0, 4, 0x1234",
+        0x29841234,
+        None,
+        CompareMOp::compare_i(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
+            0x1234.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::U32(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpli 3, 1, 4, 0x89ab",
+        0x29a489ab,
+        None,
+        CompareMOp::compare_i(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value],
+            0x89ab.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::U64(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpl 3, 0, 4, 5",
+        0x7d842840,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::U32(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpl 3, 1, 4, 5",
+        0x7da42840,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::U64(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmprb 3, 0, 4, 5",
+        0x7d842980,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::CmpRBOne(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmprb 3, 1, 4, 5",
+        0x7da42980,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::CmpRBTwo(),
+        ),
+    ));
+    retval.push(insn_single(
+        "cmpeqb 3, 4, 5",
+        0x7d8429c0,
+        None,
+        CompareMOp::compare(
+            MOpDestReg::new_sim(&[MOpRegNum::power_isa_cr_reg_num(3)], &[]),
+            [
+                MOpRegNum::power_isa_gpr_reg(4_hdl_u5).value,
+                MOpRegNum::power_isa_gpr_reg(5_hdl_u5).value,
+            ],
+            0.cast_to_static::<SInt<_>>(),
+            #[hdl(sim)]
+            OutputIntegerMode::Full64(),
+            #[hdl(sim)]
+            CompareMode::CmpEqB(),
+        ),
+    ));
     retval
 }