commit 55c64358d1c04990cd5f50785d3e3b27447dac21
author Owen Anderson <resistor@mac.com> Fri Jul 25 21:08:41 2008 +0000
committer Owen Anderson <resistor@mac.com> Fri Jul 25 21:08:41 2008 +0000
tree f98646d84816488d5d6d2543f49874376cb7b9a7
parent 8d0cc0af5a4b4c08eb74b6e36761651b63816d06

Remove live interval entries for an interval if we're eliminating its only VN.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54062 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/StrongPHIElimination.cpp

diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp
index a2bb818..9a9fba5 100644
--- a/lib/CodeGen/StrongPHIElimination.cpp
+++ b/lib/CodeGen/StrongPHIElimination.cpp
@@ -794,7 +794,12 @@
                                    LI.getVNInfoAllocator());
   NewVN->hasPHIKill = true;
   LiveRange NewRange(RangeMergingIn->start, RangeMergingIn->end, NewVN);
-  RHS.removeRange(RangeMergingIn->start, RangeMergingIn->end, true);
+  
+  if (RHS.containsOneValue())
+    LI.removeInterval(RHS.reg);
+  else
+    RHS.removeRange(RangeMergingIn->start, RangeMergingIn->end, true);
+  
   LHS.addRange(NewRange);
 }