diff options
Diffstat (limited to 'src/arch/x86_64/CodeGen.zig')
| -rw-r--r-- | src/arch/x86_64/CodeGen.zig | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/src/arch/x86_64/CodeGen.zig b/src/arch/x86_64/CodeGen.zig index bf5ebf4d41..45d9767320 100644 --- a/src/arch/x86_64/CodeGen.zig +++ b/src/arch/x86_64/CodeGen.zig @@ -3967,36 +3967,22 @@ fn genCondSwitchMir(self: *Self, ty: Type, condition: MCValue, case: MCValue) !u .dead, .unreach => unreachable, .immediate => |imm| { _ = try self.addInst(.{ - .tag = .@"test", + .tag = .xor, .ops = (Mir.Ops{ .reg1 = registerAlias(cond_reg, abi_size), }).encode(), .data = .{ .imm = @intCast(u32, imm) }, }); - return self.addInst(.{ - .tag = .cond_jmp_eq_ne, - .ops = (Mir.Ops{ - .flags = 0b00, - }).encode(), - .data = .{ .inst = undefined }, - }); }, .register => |reg| { _ = try self.addInst(.{ - .tag = .@"test", + .tag = .xor, .ops = (Mir.Ops{ .reg1 = registerAlias(cond_reg, abi_size), .reg2 = registerAlias(reg, abi_size), }).encode(), .data = undefined, }); - return self.addInst(.{ - .tag = .cond_jmp_eq_ne, - .ops = (Mir.Ops{ - .flags = 0b00, - }).encode(), - .data = .{ .inst = undefined }, - }); }, .stack_offset => { if (abi_size <= 8) { @@ -4010,6 +3996,22 @@ fn genCondSwitchMir(self: *Self, ty: Type, condition: MCValue, case: MCValue) !u return self.fail("TODO implement switch mir when case is {}", .{case}); }, } + + _ = try self.addInst(.{ + .tag = .@"test", + .ops = (Mir.Ops{ + .reg1 = registerAlias(cond_reg, abi_size), + .reg2 = registerAlias(cond_reg, abi_size), + }).encode(), + .data = undefined, + }); + return self.addInst(.{ + .tag = .cond_jmp_eq_ne, + .ops = (Mir.Ops{ + .flags = 0b00, + }).encode(), + .data = .{ .inst = undefined }, + }); }, .stack_offset => { try self.spillCompareFlagsIfOccupied(); |