[llvm-commits] [llvm] r107840 - /llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp

[Dan Gohman]

Author: djg
Date: Wed Jul  7 18:52:58 2010
New Revision: 107840

URL: http://llvm.org/viewvc/llvm-project?rev=107840&view=rev
Log:
Don't forward-declare registers for static allocas, which we'll
prefer to materialize as local constants. This fixes the clang
bootstrap abort.

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

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp?rev=107840&r1=107839&r2=107840&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp Wed Jul  7 18:52:58 2010
@@ -120,7 +120,9 @@
 
   // In bottom-up mode, just create the virtual register which will be used
   // to hold the value. It will be materialized later.
-  if (isa<Instruction>(V)) {
+  if (isa<Instruction>(V) &&
+      (!isa<AllocaInst>(V) ||
+       !FuncInfo.StaticAllocaMap.count(cast<AllocaInst>(V)))) {
     Reg = createResultReg(TLI.getRegClassFor(VT));
     FuncInfo.ValueMap[V] = Reg;
     return Reg;