Assert unhandled case.

llvm-svn: 31828

llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp

@@ -445,6 +445,8 @@ void PPCRegisterInfo::lowerDynamicAlloc(MachineBasicBlock::iterator II) const {
   // Get stack alignments.
   unsigned TargetAlign = MF.getTarget().getFrameInfo()->getStackAlignment();
   unsigned MaxAlign = MFI->getMaxAlignment();
+  assert(MaxAlign <= TargetAlign &&
+         "Dynamic alloca with large aligns not supported");
 
   // Determine the previous frame's address.  If FrameSize can't be
   // represented as 16 bits or we need special alignment, then we load the