[llvm] [llubi] Add support for llvm.speculative.load. (PR #226839)

[Florian Hahn via llvm-commits]

fhahn wrote:

> > Support for the oracle form will be added as follow-up.
> 
> It is a bit tricky, as llubi is designed not to handle calls recursively. You may need some hacks in enterCall and runMainLoop to maintain the call stack.

Thanks I put up https://github.com/llvm/llvm-project/pull/227095, which tries to solves this as follows: `enterCall` adjust the callee to execute the oracle function, `returnFromCallee` executes the speculative load

https://github.com/llvm/llvm-project/pull/226839