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3a2a2bb628
Summary: This adds support for embedding bitcode in a binary during LTO. The libLTO gains supports the `-lto-embed-bitcode` flag. The option allows users of the LTO library to embed a bitcode section. For example, LLD can pass the option via `ld.lld -mllvm=-lto-embed-bitcode`. This feature allows doing something comparable to `clang -c -fembed-bitcode`, but on the (LTO) linker level. Having bitcode alongside native code has many use-cases. To give an example, the MacOS linker can create a `-bitcode_bundle` section containing bitcode. Also, having this feature built into LLVM is an alternative to 3rd party tools such as [[ https://github.com/travitch/whole-program-llvm | wllvm ]] or [[ https://github.com/SRI-CSL/gllvm | gllvm ]]. As with these tools, this feature simplifies creating "whole-program" llvm bitcode files, but in contrast to wllvm/gllvm it does not rely on a specific llvm frontend/driver. Patch by Josef Eisl <josef.eisl@oracle.com> Reviewers: #llvm, #clang, rsmith, pcc, alexshap, tejohnson Reviewed By: tejohnson Subscribers: tejohnson, mehdi_amini, inglorion, hiraditya, aheejin, steven_wu, dexonsmith, dang, cfe-commits, llvm-commits, #llvm, #clang Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D68213 |
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| .. | ||
| bcsection.macho.s | ||
| bcsection.s | ||
| codemodel-3.ll | ||
| dllimport.ll | ||
| invalid.ll.bc | ||
| list-dependent-libraries.ll | ||
| list-symbols.ll | ||
| remangle_intrinsics_tbaa.ll | ||
| remangle_intrinsics.ll | ||
| start-lib1.ll | ||
| start-lib2.ll | ||
| strip-debug-info-bar.ll | ||
| type-mapping-bug2.ll | ||
| type-mapping-bug3.ll | ||
| type-mapping-src.ll | ||