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74f600b990
Allow to disable thinLTO buffer to support lto-embed-bitcode lld feature Hello This change is to fix issue (https://github.com/rust-lang/rust/issues/84395) in which passing "-lto-embed-bitcode=optimized" to lld when linking rust code via linker-plugin-lto doesn't produce the expected result. Instead of emitting a single unified module into a llvmbc section of the linked elf, it emits multiple submodules. This is caused because rustc emits the BC modules after running llvm `createWriteThinLTOBitcodePass` pass. Which in turn triggers a thinLTO linkage and causes the said issue. This patch allows via compiler flag (-Cemit-thin-lto=<bool>) to select between running `createWriteThinLTOBitcodePass` and `createBitcodeWriterPass`. Note this pattern of selecting between those 2 passes is common inside of LLVM code. The default is to match the old behavior. |
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| .. | ||
| back | ||
| coverageinfo | ||
| debuginfo | ||
| llvm | ||
| abi.rs | ||
| allocator.rs | ||
| asm.rs | ||
| attributes.rs | ||
| base.rs | ||
| builder.rs | ||
| callee.rs | ||
| common.rs | ||
| consts.rs | ||
| context.rs | ||
| declare.rs | ||
| intrinsic.rs | ||
| lib.rs | ||
| llvm_util.rs | ||
| mono_item.rs | ||
| type_.rs | ||
| type_of.rs | ||
| va_arg.rs | ||
| value.rs | ||