[NFC][PowerPC] More descriptive debug messages for rr to ri conversion

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
index ae6ddaf..605b2d2 100644
--- a/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
@@ -380,6 +380,10 @@ static void convertUnprimedAccPHIs(const PPCInstrInfo *TII,
     for (auto RegMBB : PHIOps)
       NewPHI.add(RegMBB.first).add(RegMBB.second);
     ChangedPHIMap[PHI] = NewPHI.getInstr();
+    LLVM_DEBUG(dbgs() << "Converting PHI: ");
+    LLVM_DEBUG(PHI->dump());
+    LLVM_DEBUG(dbgs() << "To: ");
+    LLVM_DEBUG(NewPHI.getInstr()->dump());
   }
 }
 
@@ -425,6 +429,8 @@ bool PPCMIPeephole::simplifyCode() {
       // If the previous instruction was marked for elimination,
       // remove it now.
       if (ToErase) {
+        LLVM_DEBUG(dbgs() << "Deleting instruction: ");
+        LLVM_DEBUG(ToErase->dump());
         ToErase->eraseFromParent();
         ToErase = nullptr;
       }