Don't forward-declare registers for static allocas, which we'll
prefer to materialize as local constants. This fixes the clang
bootstrap abort.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107840 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 5a24512..5b566f6 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -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;