[llvm] [BOLT] Skip functions with unsupported Linux kernel features (PR #86345)

[Maksim Panchenko via llvm-commits]

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@@ -1126,6 +1134,27 @@ Error LinuxKernelRewriter::readParaInstructions() {
   return Error::success();
 }
 
+Error LinuxKernelRewriter::rewriteParaInstructions() {
+  // Disable output of functions with paravirtual instructions before the
+  // rewrite support is complete.
+  for (BinaryFunction &BF : llvm::make_second_range(BC.getBinaryFunctions())) {
+    if (!BC.shouldEmit(BF))
+      continue;
+    for (const BinaryBasicBlock &BB : BF) {
+      if (!BC.shouldEmit(BF))
+        break;
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maksfb wrote:

Why? That's intentional early break after we mark the function as non-simple in the loop below.

https://github.com/llvm/llvm-project/pull/86345