[llvm-dev] Understanding the version handling in LLVM/Clang/LLD

[Sedat Dilek via llvm-dev]

I have downloaded the llvm-toolchain from [1]:

dileks at iniza:~/src/llvm-toolchain/clang+llvm-10.0.1-rc1-x86_64-pc-linux-gnu/bin$
./clang-10 -v
clang version 10.0.1 (https://github.com/llvm/llvm-project.git
01636c1eeace5371fef8508c7318df9d7a25b489)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/dileks/src/llvm-toolchain/clang+llvm-10.0.1-rc1-x86_64-pc-linux-gnu/bin/.
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

dileks at iniza:~/src/llvm-toolchain/clang+llvm-10.0.1-rc1-x86_64-pc-linux-gnu/bin$
./ld.lld -v
LLD 10.0.1 (https://github.com/llvm/llvm-project.git
01636c1eeace5371fef8508c7318df9d7a25b489) (compatible with GNU
linkers)

What is that for a commit-hash-id?

Even on master Git branch:

$ git describe --contains 01636c1eeace5371fef8508c7318df9d7a25b489
fatal: cannot describe '01636c1eeace5371fef8508c7318df9d7a25b489'

$ git describe --contains f79cd71e145c6fd005ba4dd1238128dfa0dc2cb6
llvmorg-10.0.1-rc1

Last commit in release/10.x before llvmorg-10.0.1-rc1 was tagged:
"[arm] Add big-endian version of pcrel fixups for adr instructions"

Commit-hash-id of the tag?

- Sedat -

[1] https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.1-rc1/clang+llvm-10.0.1-rc1-x86_64-pc-linux-gnu.tar.xz
[2] https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.1-rc1/clang+llvm-10.0.1-rc1-x86_64-pc-linux-gnu.tar.xz.sig
[3] https://github.com/llvm/llvm-project/commit/f79cd71e145c6fd005ba4dd1238128dfa0dc2cb6