[llvm-commits] [llvm] r48175 - /llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Mar 10 16:27:20 2008
New Revision: 48175

URL: http://llvm.org/viewvc/llvm-project?rev=48175&view=rev
Log:
If the register allocator ran out of registers, just abort for now.

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=48175&r1=48174&r2=48175&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp Mon Mar 10 16:27:20 2008
@@ -685,8 +685,14 @@
     }
 
     // All registers must have inf weight. Just grab one!
-    if (!minReg)
+    if (!minReg) {
+      if (active_.size() == 0) {
+        // FIXME: All the registers are occupied by fixed intervals.
+        cerr << "Register allocator ran out of registers!\n";
+        abort();
+      }
       minReg = *RC->allocation_order_begin(*mf_);
+    }
   }
   
   DOUT << "\t\tregister with min weight: "