[llvm-commits] [llvm] r115874 - /llvm/trunk/lib/CodeGen/MachineVerifier.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Oct  6 18:54:35 2010
New Revision: 115874

URL: http://llvm.org/viewvc/llvm-project?rev=115874&view=rev
Log:
Skip unused registers when verifying LiveIntervals.

Modified:
    llvm/trunk/lib/CodeGen/MachineVerifier.cpp

Modified: llvm/trunk/lib/CodeGen/MachineVerifier.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineVerifier.cpp?rev=115874&r1=115873&r2=115874&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineVerifier.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineVerifier.cpp Wed Oct  6 18:54:35 2010
@@ -884,6 +884,11 @@
   for (LiveIntervals::const_iterator LVI = LiveInts->begin(),
        LVE = LiveInts->end(); LVI != LVE; ++LVI) {
     const LiveInterval &LI = *LVI->second;
+
+    // Spilling and splitting may leave unused registers around. Skip them.
+    if (MRI->use_empty(LI.reg))
+      continue;
+
     assert(LVI->first == LI.reg && "Invalid reg to interval mapping");
 
     for (LiveInterval::const_vni_iterator I = LI.vni_begin(), E = LI.vni_end();