| ... | ... | @@ -1785,6 +1785,15 @@ fn genBinMathOpMir( |
| 1785 | 1785 | } |
| 1786 | 1786 | }, |
| 1787 | 1787 | .stack_offset => |off| { |
| 1788 | if (off > math.maxInt(i32)) { |
| 1789 | return self.fail("stack offset too large", .{}); |
| 1790 | } |
| 1791 | const abi_size = dst_ty.abiSize(self.target.*); |
| 1792 | if (abi_size > 8) { |
| 1793 | return self.fail("TODO implement ADD/SUB/CMP for stack dst with large ABI", .{}); |
| 1794 | } |
| 1795 | const adj_off = off + abi_size; |
| 1796 | |
| 1788 | 1797 | switch (src_mcv) { |
| 1789 | 1798 | .none => unreachable, |
| 1790 | 1799 | .undef => return self.genSetStack(dst_ty, off, .undef), |
| ... | ... | @@ -1792,11 +1801,6 @@ fn genBinMathOpMir( |
| 1792 | 1801 | .ptr_stack_offset => unreachable, |
| 1793 | 1802 | .ptr_embedded_in_code => unreachable, |
| 1794 | 1803 | .register => |src_reg| { |
| 1795 | | if (off > math.maxInt(i32)) { |
| 1796 | | return self.fail("stack offset too large", .{}); |
| 1797 | | } |
| 1798 | | const abi_size = dst_ty.abiSize(self.target.*); |
| 1799 | | const adj_off = off + abi_size; |
| 1800 | 1804 | _ = try self.addInst(.{ |
| 1801 | 1805 | .tag = mir_tag, |
| 1802 | 1806 | .ops = (Mir.Ops{ |
| ... | ... | @@ -1808,8 +1812,34 @@ fn genBinMathOpMir( |
| 1808 | 1812 | }); |
| 1809 | 1813 | }, |
| 1810 | 1814 | .immediate => |imm| { |
| 1811 | | _ = imm; |
| 1812 | | return self.fail("TODO implement x86 ADD/SUB/CMP source immediate", .{}); |
| 1815 | const tag: Mir.Inst.Tag = switch (mir_tag) { |
| 1816 | .add => .add_mem_imm, |
| 1817 | .@"or" => .or_mem_imm, |
| 1818 | .@"and" => .and_mem_imm, |
| 1819 | .sub => .sub_mem_imm, |
| 1820 | .xor => .xor_mem_imm, |
| 1821 | .cmp => .cmp_mem_imm, |
| 1822 | else => unreachable, |
| 1823 | }; |
| 1824 | const flags: u2 = switch (abi_size) { |
| 1825 | 1 => 0b00, |
| 1826 | 2 => 0b01, |
| 1827 | 4 => 0b10, |
| 1828 | 8 => 0b11, |
| 1829 | else => unreachable, |
| 1830 | }; |
| 1831 | const payload = try self.addExtra(Mir.ImmPair{ |
| 1832 | .dest_off = -@intCast(i32, adj_off), |
| 1833 | .operand = @bitCast(i32, @intCast(u32, imm)), |
| 1834 | }); |
| 1835 | _ = try self.addInst(.{ |
| 1836 | .tag = tag, |
| 1837 | .ops = (Mir.Ops{ |
| 1838 | .reg1 = .rbp, |
| 1839 | .flags = flags, |
| 1840 | }).encode(), |
| 1841 | .data = .{ .payload = payload }, |
| 1842 | }); |
| 1813 | 1843 | }, |
| 1814 | 1844 | .embedded_in_code, .memory, .stack_offset => { |
| 1815 | 1845 | return self.fail("TODO implement x86 ADD/SUB/CMP source memory", .{}); |
Jakub Konka <kubkon@jakubkonka.com> 2022-01-04 11:11:25+01:00
src