[llvm-commits] [llvm] r48751 - /llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Mar 24 18:28:21 2008
New Revision: 48751

URL: http://llvm.org/viewvc/llvm-project?rev=48751&view=rev
Log:
Add an assertion to catch register of illegal class.

Modified:
    llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp

Modified: llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp?rev=48751&r1=48750&r2=48751&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp Mon Mar 24 18:28:21 2008
@@ -886,6 +886,7 @@
   // Scan for the first available register.
   TargetRegisterClass::iterator I = RC->allocation_order_begin(*mf_);
   TargetRegisterClass::iterator E = RC->allocation_order_end(*mf_);
+  assert(I != E && "No allocatable register in this register class!");
   for (; I != E; ++I)
     if (prt_->isRegAvail(*I)) {
       FreeReg = *I;