[llvm] 734f914 - [Attributor][NFC] Improve debug messages

[Johannes Doerfert via llvm-commits]

Author: Johannes Doerfert
Date: 2021-10-27T21:04:31-05:00
New Revision: 734f91441d539f19a263a44d00e8b74c3f9d3d0c

URL: https://github.com/llvm/llvm-project/commit/734f91441d539f19a263a44d00e8b74c3f9d3d0c
DIFF: https://github.com/llvm/llvm-project/commit/734f91441d539f19a263a44d00e8b74c3f9d3d0c.diff

LOG: [Attributor][NFC] Improve debug messages

Added: 
    

Modified: 
    llvm/lib/Transforms/IPO/Attributor.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp
index 97771d83a7ef..5ed5e7a24412 100644
--- a/llvm/lib/Transforms/IPO/Attributor.cpp
+++ b/llvm/lib/Transforms/IPO/Attributor.cpp
@@ -1123,6 +1123,10 @@ bool Attributor::checkForAllCallSites(function_ref<bool(AbstractCallSite)> Pred,
     if (ConstantExpr *CE = dyn_cast<ConstantExpr>(U.getUser())) {
       if (CE->isCast() && CE->getType()->isPointerTy() &&
           CE->getType()->getPointerElementType()->isFunctionTy()) {
+        LLVM_DEBUG(
+            dbgs() << "[Attributor] Use, is constant cast expression, add "
+                   << CE->getNumUses()
+                   << " uses of that expression instead!\n");
         for (const Use &CEU : CE->uses())
           Uses.push_back(&CEU);
         continue;
@@ -1143,9 +1147,13 @@ bool Attributor::checkForAllCallSites(function_ref<bool(AbstractCallSite)> Pred,
     const Use *EffectiveUse =
         ACS.isCallbackCall() ? &ACS.getCalleeUseForCallback() : &U;
     if (!ACS.isCallee(EffectiveUse)) {
-      if (!RequireAllCallSites)
+      if (!RequireAllCallSites) {
+        LLVM_DEBUG(dbgs() << "[Attributor] User " << *EffectiveUse->getUser()
+                          << " is not a call of " << Fn.getName()
+                          << ", skip use\n");
         continue;
-      LLVM_DEBUG(dbgs() << "[Attributor] User " << EffectiveUse->getUser()
+      }
+      LLVM_DEBUG(dbgs() << "[Attributor] User " << *EffectiveUse->getUser()
                         << " is an invalid use of " << Fn.getName() << "\n");
       return false;
     }