[llvm] f825214 - [DebugInfo][NFC] Refactor debug intrinsic copy and delete to instead just move

[via llvm-commits]

Author: OCHyams
Date: 2022-10-20T15:12:49+01:00
New Revision: f825214411a0f014950b644f789ed478f534bda2

URL: https://github.com/llvm/llvm-project/commit/f825214411a0f014950b644f789ed478f534bda2
DIFF: https://github.com/llvm/llvm-project/commit/f825214411a0f014950b644f789ed478f534bda2.diff

LOG: [DebugInfo][NFC] Refactor debug intrinsic copy and delete to instead just move

Reviewed By: jryans

Differential Revision: https://reviews.llvm.org/D133304

Added: 
    

Modified: 
    llvm/lib/Transforms/Utils/LoopUtils.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp
index 75a755cee537c..c007a5990f337 100644
--- a/llvm/lib/Transforms/Utils/LoopUtils.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp
@@ -636,15 +636,14 @@ void llvm::deleteDeadLoop(Loop *L, DominatorTree *DT, ScalarEvolution *SE,
     // Since debug values in the loop have been deleted, inserting an undef
     // dbg.value truncates the range of any dbg.value before the loop where the
     // loop used to be. This is particularly important for constant values.
-    DIBuilder DIB(*ExitBlock->getModule());
     Instruction *InsertDbgValueBefore = ExitBlock->getFirstNonPHI();
     assert(InsertDbgValueBefore &&
            "There should be a non-PHI instruction in exit block, else these "
            "instructions will have no parent.");
-    for (auto *DVI : DeadDebugInst)
-      DIB.insertDbgValueIntrinsic(UndefValue::get(Builder.getInt32Ty()),
-                                  DVI->getVariable(), DVI->getExpression(),
-                                  DVI->getDebugLoc(), InsertDbgValueBefore);
+    for (auto *DVI : DeadDebugInst) {
+      DVI->setUndef();
+      DVI->moveBefore(InsertDbgValueBefore);
+    }
   }
 
   // Remove the block from the reference counting scheme, so that we can