search for: 3af3a676

...ying to tag certain load instructions with specialized metadata and make use of it in an AA pass. However, it seems that metadata is getting lost when instructions are merged together. Here's a toy problem with one intentionally duplicated load to illustrate the issue. http://susepaste.org/3af3a676 The above paste has two before/after IR pairs (the `before` code gets passed through `opt -O3 test.ll | llvm-dis`). Regular `tbaa` tags are still present when loads are merged, however custom ones seem to perish. Is this expected? If yes, is there any way I can make them persist from within a cus...