commit c3dd314b78c22007243c98f3f3521c7fdaa67c1b
author Evan Cheng <evan.cheng@apple.com> Fri Mar 02 05:41:42 2007 +0000
committer Evan Cheng <evan.cheng@apple.com> Fri Mar 02 05:41:42 2007 +0000
tree 2f44fb73a6ea9bb5c24e3dcc86cdca272c9aac87
parent 82932a5e4a2911cd5faa6376fa9d5dfac9e52091

Invalidate last use of a reused register if the use is a deleted noop copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34839 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/VirtRegMap.cpp

diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 0f5c48a..7b8606c 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -937,6 +937,7 @@
             DOUT << "Removing now-noop copy: " << MI;
             MBB.erase(&MI);
             VRM.RemoveFromFoldedVirtMap(&MI);
+            Spills.UpdateLastUse(Src, NULL);
             Spills.disallowClobberPhysReg(VirtReg);
             goto ProcessNextInst;
           }