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

[Amir Ayupov via llvm-commits]

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@@ -1305,6 +1334,27 @@ Error LinuxKernelRewriter::readAltInstructions() {
   return Error::success();
 }
 
+Error LinuxKernelRewriter::rewriteAltInstructions() {
+  // Disable output of functions with alt 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))
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aaupov wrote:

Duplicate

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