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Implement NullOp::SizeOf

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This commit is contained in:
bjorn3 2018-08-08 12:44:41 +02:00
parent 1305d1ef23
commit 822a181c87
1 changed files with 6 additions and 1 deletions
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7
src/base.rs
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@ -421,7 +421,12 @@ fn trans_stmt<'a, 'tcx: 'a>(
}
Rvalue::Len(lval) => return Err(format!("rval len {:?}", lval)),
Rvalue::NullaryOp(NullOp::Box, ty) => unimplemented!("rval box {:?}", ty),
Rvalue::NullaryOp(NullOp::SizeOf, ty) => unimplemented!("rval size_of {:?}", ty),
Rvalue::NullaryOp(NullOp::SizeOf, ty) => {
assert!(lval.layout().ty.is_sized(fx.tcx.at(DUMMY_SP), ParamEnv::reveal_all()));
let ty_size = fx.layout_of(ty).size.bytes();
let val = CValue::const_val(fx, fx.tcx.types.usize, ty_size as i64);
lval.write_cvalue(fx, val);
},
Rvalue::Aggregate(_, _) => bug!("shouldn't exist at trans {:?}", rval),
}
}