[llvm] [CodeGen] [AMDGPU] Attempt DAGCombine for fmul with select to ldexp (PR #111109)

[Vikash Gupta via llvm-commits]

vg0204 wrote:

> @arsenm, as you were saying there is no issue with bitcast, but owing to some bizarre docker issue, that came. On baremetal machine, as you suspected opt entir line(a preprocess command invoked by lllc-update python script) is creating problem, as it is entirely executed as it is on terminal, thus unable to locate opt binary path, as in case of llc tool!

I handled it, by letting hardcoding the opt path, followed by updating it via script & reverting the opt path back to original as was in test. But, in future it would be a problem if someone else tries to run update-llc script again & need to again do the same hack as I did now!

https://github.com/llvm/llvm-project/pull/111109