[llvm-commits] [llvm] r90815 - /llvm/trunk/lib/CodeGen/MachineInstr.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Dec  7 17:10:34 2009
New Revision: 90815

URL: http://llvm.org/viewvc/llvm-project?rev=90815&view=rev
Log:
Follow up to 90488. Turn a check into an assertion.

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

Modified: llvm/trunk/lib/CodeGen/MachineInstr.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineInstr.cpp?rev=90815&r1=90814&r2=90815&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/MachineInstr.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineInstr.cpp Mon Dec  7 17:10:34 2009
@@ -1064,8 +1064,8 @@
 unsigned MachineInstr::isConstantValuePHI() const {
   if (getOpcode() != TargetInstrInfo::PHI)
     return 0;
-  if (getNumOperands() <= 1)
-    return 0;
+  assert(getNumOperands() >= 3 &&
+         "It's illegal to have a PHI without source operands");
 
   unsigned Reg = getOperand(1).getReg();
   for (unsigned i = 3, e = getNumOperands(); i < e; i += 2)