From 864ec3992f28e4e11b80087a3e63f4fc5fd5c913 Mon Sep 17 00:00:00 2001
From: Lucas <lucas.tnagel@gmail.com>
Date: Tue, 16 Jul 2024 15:00:12 -0300
Subject: [PATCH] Set always external linkage

---
 llvm/lib/Target/SBF/SBFRegisterInfo.cpp | 40 +++++++------------------
 1 file changed, 10 insertions(+), 30 deletions(-)

diff --git a/llvm/lib/Target/SBF/SBFRegisterInfo.cpp b/llvm/lib/Target/SBF/SBFRegisterInfo.cpp
index f27834c6d0d90e4..7eff3443e92108c 100644
--- a/llvm/lib/Target/SBF/SBFRegisterInfo.cpp
+++ b/llvm/lib/Target/SBF/SBFRegisterInfo.cpp
@@ -57,25 +57,7 @@ static void WarnSize(int Offset, MachineFunction &MF, DebugLoc& DL)
     if (MF.getSubtarget<SBFSubtarget>().isSolana()) {
       Function &OffendingFunction = MF.getFunction();
 
-      std::string MessageType;
-      std::string MessageExtra;
-      std::string NewName;
-      switch (OffendingFunction.getLinkage()) {
-      case GlobalValue::LinkageTypes::InternalLinkage:
-      case GlobalValue::LinkageTypes::PrivateLinkage:
-        MessageType = "Error:";
-        MessageExtra =
-            "The program is very likely to misbehave during execution "
-            "with unexpected consequences.";
-        break;
-      default:
-        MessageType = "Warning:";
-        MessageExtra = "The program may misbehave during execution.";
-        NewName = OffendingFunction.getName().str() + "::stack_overflow";
-        break;
-      }
-
-      dbgs() << MessageType;
+      dbgs() << "Warning: ";
       if (DL) {
         dbgs() << " ";
         DL.print(dbgs());
@@ -86,11 +68,12 @@ static void WarnSize(int Offset, MachineFunction &MF, DebugLoc& DL)
              << -MaxOffset << " by " << MaxOffset - Offset
              << " bytes, please minimize large stack variables. "
              << "Estimated function frame size: " << StackSize << " bytes. "
-             << MessageExtra << "\n\n";
+             << "The program may misbehave during execution."
+             << "\n\n";
 
-      if (!NewName.empty()) {
-        OffendingFunction.setName(NewName);
-      }
+      OffendingFunction.setName(OffendingFunction.getName() +
+                                "::stack_overflow");
+      OffendingFunction.setLinkage(GlobalValue::LinkageTypes::ExternalLinkage);
     } else {
       DiagnosticInfoUnsupported DiagStackSize(
           MF.getFunction(),
@@ -187,17 +170,14 @@ int SBFRegisterInfo::resolveInternalFrameIndex(
     Offset = SBFRegisterInfo::FrameLength - Offset;
     if (static_cast<uint64_t>(Offset) < MFI.getStackSize()) {
       Function &OffendingFunction = MF.getFunction();
-      dbgs() << "Error: A function call in method "
+      dbgs() << "Warning: A function call in method "
              << OffendingFunction.getName()
              << " overwrites values in the frame. Please, decrease stack usage "
              << "or remove parameters from the call.\n\n";
 
-      GlobalValue::LinkageTypes LinkageType = OffendingFunction.getLinkage();
-      if (LinkageType != GlobalValue::LinkageTypes::InternalLinkage &&
-          LinkageType != GlobalValue::LinkageTypes::PrivateLinkage) {
-        OffendingFunction.setName(OffendingFunction.getName() +
-                                  "::call_overflow");
-      }
+      OffendingFunction.setName(OffendingFunction.getName() +
+                                "::call_overflow");
+      OffendingFunction.setLinkage(GlobalValue::LinkageTypes::ExternalLinkage);
     }
     Offset = -Offset;
   } else if (MF.getSubtarget<SBFSubtarget>().getEnableNewCallConvention() &&