[llvm] [InstCombine] Canonicalize fcmp with inf (PR #80986)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

project/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp:7769:13: error: 16 enumeration values not handled in switch: 'FCMP_OEQ', 'FCMP_ONE', 'FCMP_UEQ'... [-Werror,-Wswitch]

https://github.com/llvm/llvm-project/pull/80986