[llvm-commits] [llvm] r123335 - /llvm/trunk/lib/CodeGen/LiveDebugVariables.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Jan 12 16:37:49 2011
New Revision: 123335

URL: http://llvm.org/viewvc/llvm-project?rev=123335&view=rev
Log:
Sometimes, old virtual registers can linger on DBG_VALUE instructions.

Make sure we don't crash in that case, but simply turn them into %noreg instead.

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

Modified: llvm/trunk/lib/CodeGen/LiveDebugVariables.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveDebugVariables.cpp?rev=123335&r1=123334&r2=123335&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/LiveDebugVariables.cpp (original)
+++ llvm/trunk/lib/CodeGen/LiveDebugVariables.cpp Wed Jan 12 16:37:49 2011
@@ -565,7 +565,8 @@
         !TargetRegisterInfo::isVirtualRegister(Loc.getReg()))
       continue;
     unsigned VirtReg = Loc.getReg();
-    if (VRM.isAssignedReg(VirtReg)) {
+    if (VRM.isAssignedReg(VirtReg) &&
+        TargetRegisterInfo::isPhysicalRegister(VRM.getPhys(VirtReg))) {
       Loc.substPhysReg(VRM.getPhys(VirtReg), TRI);
     } else if (VRM.getStackSlot(VirtReg) != VirtRegMap::NO_STACK_SLOT) {
       // FIXME: Translate SubIdx to a stackslot offset.