Commit 4fd0500bb5

@@ -585,7 +585,7 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
             .fpext           => @panic("TODO try self.airFpext(inst)"),
             .intcast         => try self.airIntCast(inst),
             .trunc           => @panic("TODO try self.airTrunc(inst)"),
-            .bool_to_int     => @panic("TODO try self.airBoolToInt(inst)"),
+            .bool_to_int     => try self.airBoolToInt(inst),
             .is_non_null     => try self.airIsNonNull(inst),
             .is_non_null_ptr => @panic("TODO try self.airIsNonNullPtr(inst)"),
             .is_null         => try self.airIsNull(inst),
@@ -985,6 +985,13 @@ fn airBinOp(self: *Self, inst: Air.Inst.Index, tag: Air.Inst.Tag) !void {
     return self.finishAir(inst, result, .{ bin_op.lhs, bin_op.rhs, .none });
 }
 
+fn airBoolToInt(self: *Self, inst: Air.Inst.Index) !void {
+    const un_op = self.air.instructions.items(.data)[inst].un_op;
+    const operand = try self.resolveInst(un_op);
+    const result: MCValue = if (self.liveness.isUnused(inst)) .dead else operand;
+    return self.finishAir(inst, result, .{ un_op, .none, .none });
+}
+
 fn airPtrArithmetic(self: *Self, inst: Air.Inst.Index, tag: Air.Inst.Tag) !void {
     const ty_pl = self.air.instructions.items(.data)[inst].ty_pl;
     const bin_op = self.air.extraData(Air.Bin, ty_pl.payload).data;