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Avoid storing fat pointers as first class aggregates

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Storing them as FCAs is a regression from the recent change that made
fat pointers immediate return values so that they are passed in
registers instead of memory.
This commit is contained in:
Björn Steinbrink 2015-06-26 16:40:51 +02:00
parent 43ad8d0bec
commit 2051b3e28f
1 changed files with 8 additions and 3 deletions
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11
src/librustc_trans/trans/base.rs
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@ -832,9 +832,14 @@ pub fn store_ty<'blk, 'tcx>(cx: Block<'blk, 'tcx>, v: ValueRef, dst: ValueRef, t
return;
}
let store = Store(cx, from_arg_ty(cx, v, t), to_arg_ty_ptr(cx, dst, t));
unsafe {
llvm::LLVMSetAlignment(store, type_of::align_of(cx.ccx(), t));
if common::type_is_fat_ptr(cx.tcx(), t) {
Store(cx, ExtractValue(cx, v, abi::FAT_PTR_ADDR), expr::get_dataptr(cx, dst));
Store(cx, ExtractValue(cx, v, abi::FAT_PTR_EXTRA), expr::get_len(cx, dst));
} else {
let store = Store(cx, from_arg_ty(cx, v, t), to_arg_ty_ptr(cx, dst, t));
unsafe {
llvm::LLVMSetAlignment(store, type_of::align_of(cx.ccx(), t));
}
}
}