commit c7931fd725b390142f9112952b1426560000e6b4
author Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Jul 23 03:10:17 2011 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Jul 23 03:10:17 2011 +0000
tree e288ae68858be1bd495473da76a1c09ca32b301a
parent 59a4f9af0a2e94ec04840a066251eca34bf3e3f8

Allow null interference cursors to be queried.

They always report 'no interference'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135843 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/InterferenceCache.cpp

diff --git a/lib/CodeGen/InterferenceCache.cpp b/lib/CodeGen/InterferenceCache.cpp
index a09bb39..29b47bd 100644
--- a/lib/CodeGen/InterferenceCache.cpp
+++ b/lib/CodeGen/InterferenceCache.cpp
@@ -18,10 +18,13 @@
 
 using namespace llvm;
 
+// Static member used for null interference cursors.
+InterferenceCache::BlockInterference InterferenceCache::Cursor::NoInterference;
+
 void InterferenceCache::init(MachineFunction *mf,
                              LiveIntervalUnion *liuarray,
                              SlotIndexes *indexes,
-                            const TargetRegisterInfo *tri) {
+                             const TargetRegisterInfo *tri) {
   MF = mf;
   LIUArray = liuarray;
   TRI = tri;