[clang] [llvm] Reland "[InstCombine] Combine llvm.sin/llvm.cos libcall pairs into llvm.sincos" (PR #194616)

[Ricardo Jesus via cfe-commits]

rj-jesus wrote:

Hi, this is causing segfaults on 766.femflow_r. Here's a reproducer: https://godbolt.org/z/azrcvbfhe.

https://github.com/llvm/llvm-project/pull/194616