[clang] [llvm] [NFC][InstrProf] Refactor InstrProfiling lowering pass (PR #74970)

[Kazu Hirata via cfe-commits]

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@@ -31,31 +31,45 @@ using LoadStorePair = std::pair<Instruction *, Instruction *>;
 /// Instrumentation based profiling lowering pass. This pass lowers
 /// the profile instrumented code generated by FE or the IR based
 /// instrumentation pass.
-class InstrProfiling : public PassInfoMixin<InstrProfiling> {
+class InstrProfilingLoweringPass
+    : public PassInfoMixin<InstrProfilingLoweringPass> {
+  const InstrProfOptions Options;
+  // Is this lowering for the context-sensitive instrumentation.
+  const bool IsCS;
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kazutakahirata wrote:

Could we say `const bool IsCS = false;`here  to enable the defaulted default constructor below?

https://github.com/llvm/llvm-project/pull/74970