commit f203627f21614cbef9526aa791b3e7b0493d1e41
author Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jan 12 22:37:49 2011 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jan 12 22:37:49 2011 +0000
tree f66cbc9f4b6f7c14577532d303267b0d4f04d0a6
parent ee547095bbf2c201029c0036ceeb49a66be37119

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123335 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveDebugVariables.cpp

diff --git a/lib/CodeGen/LiveDebugVariables.cpp b/lib/CodeGen/LiveDebugVariables.cpp
index 9a67a63..1e2dba2 100644
--- a/lib/CodeGen/LiveDebugVariables.cpp
+++ b/lib/CodeGen/LiveDebugVariables.cpp
@@ -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.