[libclc] [libclc] Replace float remquo with Intel IMF version (PR #162643)

[Wenju He via cfe-commits]

wenju-he wrote:

> Can you post the IR comparison between the old and new

The diff is large, so I post them as attachment:
[amdgcn--amdhsa.bc._Z6remquoffPU3AS1i.NEW.txt](https://github.com/user-attachments/files/22818388/amdgcn--amdhsa.bc._Z6remquoffPU3AS1i.NEW.txt)
[amdgcn--amdhsa.bc._Z6remquoffPU3AS1i.OLD.txt](https://github.com/user-attachments/files/22818427/amdgcn--amdhsa.bc._Z6remquoffPU3AS1i.OLD.txt)


https://github.com/llvm/llvm-project/pull/162643