[llvm] [BOLT] Add reading support for Linux kernel .altinstructions section (PR #84283)

[Davide Italiano via llvm-commits]

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@@ -27,6 +27,21 @@ using namespace bolt;
 
 namespace opts {
 
+static cl::opt<bool>
+    AltInstHasPadLen("alt-inst-has-padlen",
+                     cl::desc("specify that .altinstructions has padlen field"),
+                     cl::init(false), cl::Hidden, cl::cat(BoltCategory));
+
+static cl::opt<uint32_t>
+    AltInstFeatureSize("alt-inst-feature-size",
+                       cl::desc("size of feature field in .altinstructions"),
+                       cl::init(2), cl::Hidden, cl::cat(BoltCategory));
+
+static cl::opt<bool>
+    DumpAltInstructions("dump-alt-instructions",
+                        cl::desc("dump Linux alernative instructions info"),
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dcci wrote:

typo: alternative.

https://github.com/llvm/llvm-project/pull/84283