commit e63dfeee36fdc4c83b1d68d3e8b727da4f9916b9
author Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jan 12 23:14:07 2011 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Wed Jan 12 23:14:07 2011 +0000
tree fd7736d3e03ceb4f2b8b0eb5d704995b8664d2f2
parent 2ffee66e10ec91a84d3e62b213b3d674723596d8

Don't emit a DBG_VALUE for a spill slot that the rewriter decided not to use after all.

llvm-svn: 123339

llvm/lib/CodeGen/LiveDebugVariables.cpp

diff --git a/llvm/lib/CodeGen/LiveDebugVariables.cpp b/llvm/lib/CodeGen/LiveDebugVariables.cpp
index fc6275f..b2aaa8e 100644
--- a/llvm/lib/CodeGen/LiveDebugVariables.cpp
+++ b/llvm/lib/CodeGen/LiveDebugVariables.cpp
@@ -568,7 +568,8 @@
     if (VRM.isAssignedReg(VirtReg) &&
         TargetRegisterInfo::isPhysicalRegister(VRM.getPhys(VirtReg))) {
       Loc.substPhysReg(VRM.getPhys(VirtReg), TRI);
-    } else if (VRM.getStackSlot(VirtReg) != VirtRegMap::NO_STACK_SLOT) {
+    } else if (VRM.getStackSlot(VirtReg) != VirtRegMap::NO_STACK_SLOT &&
+               VRM.isSpillSlotUsed(VRM.getStackSlot(VirtReg))) {
       // FIXME: Translate SubIdx to a stackslot offset.
       Loc = MachineOperand::CreateFI(VRM.getStackSlot(VirtReg));
     } else {