[llvm-commits] [llvm] r64184 - /llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Feb  9 16:47:36 2009
New Revision: 64184

URL: http://llvm.org/viewvc/llvm-project?rev=64184&view=rev
Log:
If the target cannot issue a copy for the given source and dest registers, abort instead of silently continue.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp?rev=64184&r1=64183&r2=64184&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodesEmit.cpp Mon Feb  9 16:47:36 2009
@@ -125,10 +125,11 @@
   } else {
     // Create the reg, emit the copy.
     VRBase = MRI.createVirtualRegister(DstRC);
-    bool Emitted =
-      TII->copyRegToReg(*BB, End, VRBase, SrcReg, DstRC, SrcRC);
-    Emitted = Emitted; // Silence compiler warning.
-    assert(Emitted && "Unable to issue a copy instruction!");
+    bool Emitted = TII->copyRegToReg(*BB, End, VRBase, SrcReg, DstRC, SrcRC);
+    if (!Emitted) {
+      cerr << "Unable to issue a copy instruction!\n";
+      abort();
+    }
   }
 
   SDValue Op(Node, ResNo);
@@ -529,7 +530,11 @@
     else
       DstTRC = TRI->getPhysicalRegisterRegClass(DestReg,
                                             Node->getOperand(1).getValueType());
-    TII->copyRegToReg(*BB, End, DestReg, SrcReg, DstTRC, SrcTRC);
+    bool Emitted = TII->copyRegToReg(*BB, End, DestReg, SrcReg, DstTRC, SrcTRC);
+    if (!Emitted) {
+      cerr << "Unable to issue a copy instruction!\n";
+      abort();
+    }
     break;
   }
   case ISD::CopyFromReg: {