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Support 16-bit pointers as well as i/usize

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This is based on the original work of Dylan McKay for the
[avr-rust project][ar].

[ar]: https://github.com/avr-rust/rust
This commit is contained in:
Jake Goulding 2016-05-06 09:31:11 -04:00
parent 2fb6f8e2c9
commit bc7595c8ab
18 changed files with 123 additions and 3 deletions
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3
src/librustc_const_eval/eval.rs
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@ -584,6 +584,9 @@ pub fn eval_const_expr_partial<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
(&LitKind::Int(n, Unsuffixed), Some(&ty::TyInt(IntTy::Is))) |
(&LitKind::Int(n, Signed(IntTy::Is)), _) => {
match tcx.sess.target.int_type {
IntTy::I16 => if n == I16_OVERFLOW {
return Ok(Integral(Isize(Is16(::std::i16::MIN))));
},
IntTy::I32 => if n == I32_OVERFLOW {
return Ok(Integral(Isize(Is32(::std::i32::MIN))));
},