[llvm] Constant Fold Logf128 calls (PR #84501)

[Matt Arsenault via llvm-commits]

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@@ -161,3 +161,9 @@ add_llvm_component_library(LLVMAnalysis
   Support
   TargetParser
   )
+
+include(CheckCXXSymbolExists)
+check_cxx_symbol_exists(logf128 math.h HAS_LOGF128)
+if(HAS_LOGF128)
+ target_compile_definitions(LLVMAnalysis PRIVATE HAS_LOGF128)
+endif()
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arsenm wrote:

GitHub is unhappy about the end of file here 

https://github.com/llvm/llvm-project/pull/84501