Fix iterator invalidation problem with cast instructions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5876 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp
index 21b1ded..13e4f02 100644
--- a/lib/Target/X86/X86ISelSimple.cpp
+++ b/lib/Target/X86/X86ISelSimple.cpp
@@ -1401,7 +1401,7 @@
                              MachineBasicBlock::iterator &IP,
                              Value *Src, const Type *DestTy,
                              unsigned DestReg) {
-  unsigned SrcReg = getReg(Src);
+  unsigned SrcReg = getReg(Src, BB, IP);
   const Type *SrcTy = Src->getType();
   unsigned SrcClass = getClassB(SrcTy);
   unsigned DestClass = getClassB(DestTy);