lib/compiler_rt/limb64.zig   | 581 +++++++++++++++++++++++++++++++-
 src/codegen/wasm/CodeGen.zig | 272 ++++++++++++---
 src/codegen/wasm/Mir.zig     |  11 +
 test/behavior/cast_int.zig   |  77 +++++
 test/behavior/math.zig       | 348 ++++++++++++++++++-
 test/behavior/truncate.zig   |  45 +++
 6 files changed, 1274 insertions(+), 60 deletions(-)