8dfe819bcd
Summary: Constrain which metadata nodes are allowed to be, or contain, DILocations. This ensures that logic for updating DILocations in a Module is complete. Currently, !llvm.loop metadata is the only odd duck which contains nested DILocations. This has caused problems in the past: some passes forgot to visit the nested locations, leading to subtly broken debug info and late verification failures. If there's a compelling reason for some future metadata to nest DILocations, we'll need to introduce a generic API for updating the locations attached to an Instruction before relaxing this check. Reviewers: aprantl, dsanders Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D79245
This directory contains testcases that the verifier is supposed to detect as malformed LLVM code. Testcases for situations that the verifier incorrectly identifies as malformed should go in the test/Assembler directory.