commit 1e6c65dba706de80f5a4ceb8a1fc86bc3d0a61c6
author Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Mar 23 04:43:16 2011 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Mar 23 04:43:16 2011 +0000
tree a770cb75c029144521ab442ea9bbdaff26511f34
parent 0b5015188e834afa7fb2fe3694a9c190f59fd19c

Notify the delegate before removing dead values from a live interval.

The register allocator needs to know when the range shrinks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128145 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveRangeEdit.cpp

diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp
index f5c67b9..6b419eb 100644
--- a/lib/CodeGen/LiveRangeEdit.cpp
+++ b/lib/CodeGen/LiveRangeEdit.cpp
@@ -182,6 +182,8 @@
         // Remove defined value.
         if (MOI->isDef()) {
           if (VNInfo *VNI = LI.getVNInfoAt(Idx)) {
+            if (delegate_)
+              delegate_->LRE_WillShrinkVirtReg(LI.reg);
             LI.removeValNo(VNI);
             if (LI.empty()) {
               ToShrink.remove(&LI);