Ignore debug info one more place during coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95819 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 1d9bda4ab0bd96ef174f8837510dcfe754064475..0d35b295a39c31182e06e014f3c734e82f9305c0 100644 (file)
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -1173,6 +1173,8 @@ SimpleRegisterCoalescing::HasIncompatibleSubRegDefUse(MachineInstr *CopyMI,
   for (MachineRegisterInfo::reg_iterator I = mri_->reg_begin(VirtReg),
          E = mri_->reg_end(); I != E; ++I) {
     MachineOperand &O = I.getOperand();
+    if (O.isDebug())
+      continue;
     MachineInstr *MI = &*I;
     if (MI == CopyMI || JoinedCopies.count(MI))
       continue;