[llvm-commits] [llvm] r119861 - /llvm/trunk/lib/Target/ARM/ARMFastISel.cpp

[Eric Christopher]

Author: echristo
Date: Fri Nov 19 16:37:58 2010
New Revision: 119861

URL: http://llvm.org/viewvc/llvm-project?rev=119861&view=rev
Log:
Update comment.

Modified:
    llvm/trunk/lib/Target/ARM/ARMFastISel.cpp

Modified: llvm/trunk/lib/Target/ARM/ARMFastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMFastISel.cpp?rev=119861&r1=119860&r2=119861&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMFastISel.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMFastISel.cpp Fri Nov 19 16:37:58 2010
@@ -609,9 +609,8 @@
   const User *U = NULL;
   unsigned Opcode = Instruction::UserOp1;
   if (const Instruction *I = dyn_cast<Instruction>(Obj)) {
-    // Don't walk into other basic blocks; it's possible we haven't
-    // visited them yet, so the instructions may not yet be assigned
-    // virtual registers.
+    // Don't walk into other basic blocks unless the object is an alloca from
+    // another block, otherwise it may not have a virtual register assigned.
     if (FuncInfo.StaticAllocaMap.count(static_cast<const AllocaInst *>(Obj)) ||
         FuncInfo.MBBMap[I->getParent()] == FuncInfo.MBB) {
       Opcode = I->getOpcode();