While lowering dbg_declare, emit DBG_VALUE machine instruction if alloca matching llvm.dbg.declare intrinsic is missing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102513 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 8aa37a0..49bfbff 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -342,17 +342,17 @@
// Don't handle byval struct arguments or VLAs, for example.
// Note that if we have a byval struct argument, fast ISel is turned off;
// those are handled in SelectionDAGBuilder.
- if (!AI) break;
- DenseMap<const AllocaInst*, int>::iterator SI =
- StaticAllocaMap.find(AI);
- if (SI == StaticAllocaMap.end()) break; // VLAs.
- int FI = SI->second;
- if (!DI->getDebugLoc().isUnknown())
- MF.getMMI().setVariableDbgInfo(DI->getVariable(), FI, DI->getDebugLoc());
-
- // Building the map above is target independent. Generating DBG_VALUE
- // inline is target dependent; do this now.
- (void)TargetSelectInstruction(cast<Instruction>(I));
+ if (AI) {
+ DenseMap<const AllocaInst*, int>::iterator SI =
+ StaticAllocaMap.find(AI);
+ if (SI == StaticAllocaMap.end()) break; // VLAs.
+ int FI = SI->second;
+ if (!DI->getDebugLoc().isUnknown())
+ MF.getMMI().setVariableDbgInfo(DI->getVariable(), FI, DI->getDebugLoc());
+ } else
+ // Building the map above is target independent. Generating DBG_VALUE
+ // inline is target dependent; do this now.
+ (void)TargetSelectInstruction(cast<Instruction>(I));
return true;
}
case Intrinsic::dbg_value: {