commit 8ec88ba58866a840a27ab5172fd2b954780b52f3
author Cameron Zwarich <zwarich@apple.com> Mon Dec 20 00:08:10 2010 +0000
committer Cameron Zwarich <zwarich@apple.com> Mon Dec 20 00:08:10 2010 +0000
tree f37129dbd3371112452cb2009d445106053aa17e
parent a0fd0d5b27257c7397e9f6e4234cd600683c9248

Ignore debug values when performing MachineVerifier liveness checks. Fixes
PR8822.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122207 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineVerifier.cpp

diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp
index f7713fd..4025e29 100644
--- a/lib/CodeGen/MachineVerifier.cpp
+++ b/lib/CodeGen/MachineVerifier.cpp
@@ -587,7 +587,9 @@
       return;
 
     // Check Live Variables.
-    if (MO->isUndef()) {
+    if (MI->isDebugValue()) {
+      // Liveness checks are not valid for debug values.
+    } else if (MO->isUndef()) {
       // An <undef> doesn't refer to any register, so just skip it.
     } else if (MO->isUse()) {
       regsLiveInButUnused.erase(Reg);