[llvm] [JITLink][AArch32] Add GOT builder and implement R_ARM_GOT_PREL relocations for ELF (PR #78753)

[Stefan Gränitz via llvm-commits]

weliveindetail wrote:

This patch implements a new relocation type and it's pretty straightforward. All new code is in JITLink AArch32 and exercised in a test that I adapted from an existing test in LLD. The pre-merge build failed due to MLIR test failures on Windows that are unrelated. The JITLink built went well and tests passed on both platforms.

I have some more patches based on this and I want to land them before release/18.x branches. If there are any questions about the code here, I am happy to discuss post-commit.

https://github.com/llvm/llvm-project/pull/78753