commit cacefc7dcaa646560e51c367ca3785a37fac69bb
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 a73c00a84b51d5d26b20af2e8d755c1971b94d3d
parent 8957aaa2d27974b165d660e609f3664ca64d9404

Allow null interference cursors to be queried.

They always report 'no interference'.

llvm-svn: 135843

llvm/lib/CodeGen/InterferenceCache.cpp

diff --git a/llvm/lib/CodeGen/InterferenceCache.cpp b/llvm/lib/CodeGen/InterferenceCache.cpp
index a09bb39..29b47bd 100644
--- a/llvm/lib/CodeGen/InterferenceCache.cpp
+++ b/llvm/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;