[llvm] [llvm-exegesis] [AArch64] Add support for Load Instructions in subprocess execution mode (PR #144895)

[Lakshay Kumar via llvm-commits]

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@@ -78,15 +80,47 @@ static bool generateSnippetSetupCode(const ExegesisTarget &ET,
   Register StackPointerRegister = BBF.MF.getSubtarget()
                                       .getTargetLowering()
                                       ->getStackPointerRegisterToSaveRestore();
+#define DEBUG_TYPE "register-initial-values"
+  // FIXME: Only loading first register with memory address is hacky.
+  bool isFirstRegister = true;
   for (const RegisterValue &RV : Key.RegisterInitialValues) {
+    // Debug: register name and class name and value from BenchmarkKey
+    const MCRegisterInfo *RegInfo = BBF.MF.getTarget().getMCRegisterInfo();
+    const char *RegName = RegInfo->getName(RV.Register);
+    const char *regClassName = "Unknown";
+    for (unsigned i = 0, e = RegInfo->getNumRegClasses(); i < e; ++i) {
+      const MCRegisterClass &RC = RegInfo->getRegClass(i);
+      if (RC.contains(RV.Register)) {
+        regClassName = RegInfo->getRegClassName(&RC);
+        break;
+      }
+    }
+    LLVM_DEBUG(
+        dbgs() << "Setting register (Class: " << regClassName << ") " << RegName
+               << std::string(
+                      std::max(0, 3 - static_cast<int>(strlen(RegName))), ' '));
+
     if (GenerateMemoryInstructions) {
       // If we're generating memory instructions, don't load in the value for
       // the register with the stack pointer as it will be used later to finish
       // the setup.
       if (Register(RV.Register) == StackPointerRegister)
         continue;
+#if defined(__aarch64__)
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lakshayk-nv wrote:

Yes, Not required. Reverted.
Thanks!

https://github.com/llvm/llvm-project/pull/144895