src/arch/x86_64/CodeGen.zig   | 438 ++++++++++++++++++++++++++------
 src/arch/x86_64/Encoding.zig  |  27 +-
 src/arch/x86_64/Lower.zig     |   6 +
 src/arch/x86_64/Mir.zig       |  12 +
 src/arch/x86_64/encoder.zig   |   2 +-
 src/arch/x86_64/encodings.zig |  14 +
 src/codegen.zig               | 103 ++++++--
 7 files changed, 486 insertions(+), 116 deletions(-)