Commit 664e3e16fa

@@ -942,6 +942,8 @@ fn binOpRegister(
         },
     });
 
+    // generate the struct for OF checks
+
     return MCValue{ .register = dest_reg };
 }
 

@@ -177,6 +177,10 @@ fn mirRType(emit: *Emit, inst: Mir.Inst.Index) !void {
         .add => try emit.writeInstruction(Instruction.add(r_type.rd, r_type.rs1, r_type.rs2)),
         .sub => try emit.writeInstruction(Instruction.sub(r_type.rd, r_type.rs1, r_type.rs2)),
         .cmp_gt => try emit.writeInstruction(Instruction.slt(r_type.rd, r_type.rs1, r_type.rs2)),
+        .cmp_eq => {
+            try emit.writeInstruction(Instruction.xor(r_type.rd, r_type.rs1, r_type.rs2));
+            try emit.writeInstruction(Instruction.sltiu(r_type.rd, r_type.rd, 1));
+        },
         else => unreachable,
     }
 }
@@ -459,6 +463,8 @@ fn instructionSize(emit: *Emit, inst: Mir.Inst.Index) usize {
 
         .abs => 12, // 3 * 4
 
+        .cmp_eq => 8,
+
         else => 4,
     };
 }