[BOLT][AArch64] Enable function print after ADRRelaxation (#119869)

Introduce `--print-adr-relaxation` to print after ADR Relaxation pass.

Author: paschalis-mpeis

bolt/include/bolt/Passes/ADRRelaxationPass.h

@@ -25,7 +25,8 @@ namespace bolt {
 
 class ADRRelaxationPass : public BinaryFunctionPass {
 public:
-  explicit ADRRelaxationPass() : BinaryFunctionPass(false) {}
+  explicit ADRRelaxationPass(const cl::opt<bool> &PrintPass)
+      : BinaryFunctionPass(PrintPass) {}
 
   const char *getName() const override { return "adr-relaxation"; }
 

bolt/lib/Rewrite/BinaryPassManager.cpp

@@ -126,6 +126,11 @@ static cl::opt<bool> PrintJTFootprintReduction(
     cl::desc("print function after jt-footprint-reduction pass"), cl::Hidden,
     cl::cat(BoltOptCategory));
 
+static cl::opt<bool>
+    PrintAdrRelaxation("print-adr-relaxation",
+                       cl::desc("print functions after ADR Relaxation pass"),
+                       cl::Hidden, cl::cat(BoltOptCategory));
+
 static cl::opt<bool>
     PrintLongJmp("print-longjmp",
                  cl::desc("print functions after longjmp pass"), cl::Hidden,
@@ -493,7 +498,8 @@ Error BinaryFunctionPassManager::runAllPasses(BinaryContext &BC) {
   Manager.registerPass(std::make_unique<ReorderData>());
 
   if (BC.isAArch64()) {
-    Manager.registerPass(std::make_unique<ADRRelaxationPass>());
+    Manager.registerPass(
+        std::make_unique<ADRRelaxationPass>(PrintAdrRelaxation));
 
     // Tighten branches according to offset differences between branch and
     // targets. No extra instructions after this pass, otherwise we may have