Eliminate data relocations by using NULL instead of global empty list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29250 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index fba0467..9e0d5d2 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -639,8 +639,10 @@
DEBUG(std::cerr << getInstructionIndex(mi) << "\t" << *mi);
// handle implicit defs
- for (const unsigned* id = tid.ImplicitDefs; *id; ++id)
- handleRegisterDef(mbb, mi, *id);
+ if (tid.ImplicitDefs) {
+ for (const unsigned* id = tid.ImplicitDefs; *id; ++id)
+ handleRegisterDef(mbb, mi, *id);
+ }
// handle explicit defs
for (int i = mi->getNumOperands() - 1; i >= 0; --i) {