[DebugInfo] Add const to DILocation variable declaration; NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291785 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/InstCombine/InstCombinePHI.cpp b/lib/Transforms/InstCombine/InstCombinePHI.cpp
index 184897f751fe2a0e26e0e2b609a33169fecd89f5..4cbffe9533b759b75be4ec6005a7f26f872dd139 100644 (file)
--- a/lib/Transforms/InstCombine/InstCombinePHI.cpp
+++ b/lib/Transforms/InstCombine/InstCombinePHI.cpp
@@ -29,7 +29,7 @@ using namespace llvm::PatternMatch;
 /// locations of the original PHI node arguments.
 DebugLoc InstCombiner::PHIArgMergedDebugLoc(PHINode &PN) {
   auto *FirstInst = cast<Instruction>(PN.getIncomingValue(0));
-  DILocation *Loc = FirstInst->getDebugLoc();
+  const DILocation *Loc = FirstInst->getDebugLoc();
 
   for (unsigned i = 1; i != PN.getNumIncomingValues(); ++i) {
     auto *I = cast<Instruction>(PN.getIncomingValue(i));