[NFC] Add debug msgs to SILCombine

Author: meg-gupta

lib/SILOptimizer/SILCombiner/SILCombine.cpp

@@ -420,6 +420,12 @@ bool SILCombiner::doOneIteration(SILFunction &F, unsigned Iteration) {
       MadeChange = true;
       continue;
     }
+#ifndef NDEBUG
+    std::string OrigIStr;
+#endif
+    LLVM_DEBUG(llvm::raw_string_ostream SS(OrigIStr); I->print(SS);
+               OrigIStr = SS.str(););
+    LLVM_DEBUG(llvm::dbgs() << "SC: Visiting: " << OrigIStr << '\n');
 
     // Canonicalize the instruction.
     if (scCanonicalize.tryCanonicalize(I)) {
@@ -456,13 +462,6 @@ bool SILCombiner::doOneIteration(SILFunction &F, unsigned Iteration) {
     // Then begin... SILCombine.
     Builder.setInsertionPoint(I);
 
-#ifndef NDEBUG
-    std::string OrigIStr;
-#endif
-    LLVM_DEBUG(llvm::raw_string_ostream SS(OrigIStr); I->print(SS);
-               OrigIStr = SS.str(););
-    LLVM_DEBUG(llvm::dbgs() << "SC: Visiting: " << OrigIStr << '\n');
-
     SILInstruction *currentInst = I;
     if (SILInstruction *Result = visit(I)) {
       ++NumCombined;