[llvm-branch-commits] [llvm] [MTE] add stack frame history buffer (PR #86356)

[Florian Mayer via llvm-branch-commits]

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@@ -82,6 +84,26 @@ static cl::opt<size_t> ClMaxLifetimes(
     cl::desc("How many lifetime ends to handle for a single alloca."),
     cl::Optional);
 
+// Mode for selecting how to insert frame record info into the stack ring
+// buffer.
+enum RecordStackHistoryMode {
+  // Do not record frame record info.
+  none,
+
+  // Insert instructions into the prologue for storing into the stack ring
+  // buffer directly.
+  instr,
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fmayer wrote:

It is called `instr` in HWASan

https://github.com/llvm/llvm-project/pull/86356