[llvm] [BOLT] Add split function support for the Linux kernel (PR #90541)

[Maksim Panchenko via llvm-commits]

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@@ -715,6 +715,12 @@ Error SplitFunctions::runOnFunctions(BinaryContext &BC) {
   if (!opts::SplitFunctions)
     return Error::success();
 
+  if (BC.IsLinuxKernel && BC.BOLTReserved.empty()) {
+    BC.errs() << "BOLT-ERROR: split functions require reserved space in the "
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maksfb wrote:

Totally. Patches are welcome :)

https://github.com/llvm/llvm-project/pull/90541