src/arch/x86_64/CodeGen.zig        | 415 ++++++++++++++++++++------------
 src/arch/x86_64/Emit.zig           | 273 +++++++++++----------
 src/arch/x86_64/Lower.zig          | 220 ++++++++++++-----
 src/arch/x86_64/Mir.zig            |  34 ++-
 src/arch/x86_64/bits.zig           |   9 +
 src/arch/x86_64/encoder.zig        |   4 +-
 test/behavior/bugs/12891.zig       |   6 -
 test/behavior/field_parent_ptr.zig |   1 -
 8 files changed, 599 insertions(+), 363 deletions(-)