src/arch/x86_64/CodeGen.zig       | 312 ++++++++++++++++++++++----------
 src/arch/x86_64/Encoding.zig      |  16 +-
 src/arch/x86_64/Lower.zig         |  23 +++
 src/arch/x86_64/Mir.zig           |  34 ++++
 src/arch/x86_64/encodings.zig     |  36 ++++
 src/codegen.zig                   | 182 ++++++++-----------
 test/behavior/basic.zig           |   8 -
 test/behavior/bugs/13069.zig      |   2 -
 test/behavior/cast.zig            |   9 -
 test/behavior/enum.zig            |   2 -
 test/behavior/eval.zig            |   3 -
 test/behavior/floatop.zig         |   9 -
 test/behavior/fn.zig              |   4 -
 test/behavior/for.zig             |   4 -
 test/behavior/generics.zig        |   5 -
 test/behavior/math.zig            |   2 -
 test/behavior/maximum_minimum.zig |   4 -
 test/behavior/pointers.zig        |   4 -
 test/behavior/ptrcast.zig         |   2 -
 test/behavior/src.zig             |   1 -
 test/behavior/struct.zig          |   3 -
 test/behavior/switch.zig          |   2 -
 test/behavior/tuple.zig           |   2 -
 test/behavior/type_info.zig       |   4 -
 test/behavior/union.zig           |  15 --
 test/behavior/vector.zig          |   6 -
 26 files changed, 403 insertions(+), 291 deletions(-)