[PATCH] D49347: [WIP][DebugInfo][InstCombine] DebugLoc in induction PHI

[Anastasis via Phabricator via llvm-commits]

gramanas created this revision.
gramanas added a reviewer: vsk.
Herald added subscribers: llvm-commits, JDevlieghere.

`Instruction *DL` can sometimes be nullptr at the time of the `createInductionVariable()` call.
Attach the start of the loop as DebugLoc in the induction phi and add if that's the case.


Repository:
  rL LLVM

https://reviews.llvm.org/D49347

Files:
  lib/Transforms/Vectorize/LoopVectorize.cpp


Index: lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- lib/Transforms/Vectorize/LoopVectorize.cpp
+++ lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -2568,13 +2568,15 @@
   if (!Latch)
     Latch = Header;
 
+  DebugLoc Loc;
+  DL ? Loc = DL->getDebugLoc() : Loc = L->getStartLoc();
+
   IRBuilder<> Builder(&*Header->getFirstInsertionPt());
-  Instruction *OldInst = getDebugLocFromInstOrOperands(OldInduction);
-  setDebugLocFromInst(Builder, OldInst);
+  Builder.SetCurrentDebugLocation(Loc);
   auto *Induction = Builder.CreatePHI(Start->getType(), 2, "index");
 
   Builder.SetInsertPoint(Latch->getTerminator());
-  setDebugLocFromInst(Builder, OldInst);
+  Builder.SetCurrentDebugLocation(Loc);
 
   // Create i+1 and fill the PHINode.
   Value *Next = Builder.CreateAdd(Induction, Step, "index.next");


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