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rustc: Move a comment to the right spot in trans

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I believe this comment here is mostly talking about the `ptrcast` function call
below, so move the comment down to that block.
This commit is contained in:
Alex Crichton 2017-09-13 15:04:51 -07:00
parent afb85cfd33
commit 19727c84dd
1 changed files with 23 additions and 24 deletions
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11
src/librustc_trans/callee.rs
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@ -53,6 +53,11 @@ pub fn get_fn<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
let sym = tcx.symbol_name(instance);
debug!("get_fn({:?}: {:?}) => {}", instance, fn_ty, sym);
// Create a fn pointer with the substituted signature.
let fn_ptr_ty = tcx.mk_fn_ptr(common::ty_fn_sig(ccx, fn_ty));
let llptrty = type_of::type_of(ccx, fn_ptr_ty);
let llfn = if let Some(llfn) = declare::get_declared_value(ccx, &sym) {
// This is subtle and surprising, but sometimes we have to bitcast
// the resulting fn pointer. The reason has to do with external
// functions. If you have two crates that both bind the same C
@ -76,12 +81,6 @@ pub fn get_fn<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
// This can occur on either a crate-local or crate-external
// reference. It also occurs when testing libcore and in some
// other weird situations. Annoying.
// Create a fn pointer with the substituted signature.
let fn_ptr_ty = tcx.mk_fn_ptr(common::ty_fn_sig(ccx, fn_ty));
let llptrty = type_of::type_of(ccx, fn_ptr_ty);
let llfn = if let Some(llfn) = declare::get_declared_value(ccx, &sym) {
if common::val_ty(llfn) != llptrty {
debug!("get_fn: casting {:?} to {:?}", llfn, llptrty);
consts::ptrcast(llfn, llptrty)