diff --git a/src/arch/x86_64/CodeGen.zig b/src/arch/x86_64/CodeGen.zig index d91beceabe..a834f2bee5 100644 --- a/src/arch/x86_64/CodeGen.zig +++ b/src/arch/x86_64/CodeGen.zig @@ -1071,10 +1071,21 @@ fn airMax(self: *Self, inst: Air.Inst.Index) !void { fn airSlice(self: *Self, inst: Air.Inst.Index) !void { const ty_pl = self.air.instructions.items(.data)[inst].ty_pl; const bin_op = self.air.extraData(Air.Bin, ty_pl.payload).data; - const result: MCValue = if (self.liveness.isUnused(inst)) - .dead - else - return self.fail("TODO implement slice for {}", .{self.target.cpu.arch}); + + if (self.liveness.isUnused(inst)) { + return self.finishAir(inst, .dead, .{ bin_op.lhs, bin_op.rhs, .none }); + } + + const ptr = try self.resolveInst(bin_op.lhs); + const ptr_ty = self.air.typeOf(bin_op.lhs); + const len = try self.resolveInst(bin_op.rhs); + const len_ty = self.air.typeOf(bin_op.rhs); + + const stack_offset = @intCast(i32, try self.allocMem(inst, 16, 16)); + try self.genSetStack(ptr_ty, stack_offset + 8, ptr); + try self.genSetStack(len_ty, stack_offset, len); + const result = MCValue{ .stack_offset = stack_offset }; + return self.finishAir(inst, result, .{ bin_op.lhs, bin_op.rhs, .none }); }