src/arch/x86_64/CodeGen.zig    | 390 +++++++++++++++++++++++++++++++-
 src/arch/x86_64/Emit.zig       |  68 ++++--
 src/arch/x86_64/Encoding.zig   |  17 +-
 src/arch/x86_64/Lower.zig      | 160 +++++++------
 src/arch/x86_64/Mir.zig        |   7 +-
 src/arch/x86_64/encodings.zig  |  98 ++++----
 test/behavior/x86_64/build.zig |   5 +
 test/behavior/x86_64/math.zig  |  22 ++
 8 files changed, 616 insertions(+), 151 deletions(-)