From a891518c4dfd7dddc2f88be0100f8204e738afb3 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Wed, 11 Mar 2009 22:19:43 +0000
Subject: [PATCH] Skip interleaved debug info when fast-forwarding through
 allocations.  Apparently the assumption is there is an instruction
 (terminator?) following the allocation so I am allowing the same assumption.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66716 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/InstructionCombining.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 2bf87c0045d..b2a68641940 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -10954,10 +10954,10 @@ Instruction *InstCombiner::visitAllocationInst(AllocationInst &AI) {
       InsertNewInstBefore(New, AI);
 
       // Scan to the end of the allocation instructions, to skip over a block of
-      // allocas if possible...
+      // allocas if possible...also skip interleaved debug info
       //
       BasicBlock::iterator It = New;
-      while (isa<AllocationInst>(*It)) ++It;
+      while (isa<AllocationInst>(*It) || isa<DbgInfoIntrinsic>(*It)) ++It;
 
       // Now that I is pointing to the first non-allocation-inst in the block,
       // insert our getelementptr instruction...