commit f437f733484169cf67f7c3e798908bbf27175580
author Evan Cheng <evan.cheng@apple.com> Fri Sep 17 21:56:26 2010 +0000
committer Evan Cheng <evan.cheng@apple.com> Fri Sep 17 21:56:26 2010 +0000
tree 76db2e7d3c9ffcf5ac555bd9e7336f8c07a26d8c
parent 38cb1cdfb7308e82ed00985427f78d11d817d88a

Fix a potential bug that can cause miscomparison with and without debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114220 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineCSE.cpp

diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp
index 92e2299..39a50d2 100644
--- a/lib/CodeGen/MachineCSE.cpp
+++ b/lib/CodeGen/MachineCSE.cpp
@@ -101,7 +101,7 @@
     unsigned Reg = MO.getReg();
     if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg))
       continue;
-    if (!MRI->hasOneUse(Reg))
+    if (!MRI->hasOneNonDBGUse(Reg))
       // Only coalesce single use copies. This ensure the copy will be
       // deleted.
       continue;