commit cf3a4487c0627d15d03fb6fedc10b58f6e2c9ebe
author Devang Patel <dpatel@apple.com> Thu Jan 15 23:41:32 2009 +0000
committer Devang Patel <dpatel@apple.com> Thu Jan 15 23:41:32 2009 +0000
tree b99fd06b4586d9db5e2df2549e1d6f9ec64707bd
parent fa9c5eac33bef67e2faef166c902e3bb16efa30f

Validate dbg_* intrinsics before lowering them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62286 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index 49b7ad8..241ad00 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -3746,7 +3746,7 @@
   case Intrinsic::dbg_stoppoint: {
     DwarfWriter *DW = DAG.getDwarfWriter();
     DbgStopPointInst &SPI = cast<DbgStopPointInst>(I);
-    if (DW && SPI.getContext())
+    if (DW && SPI.getContext() && DW->ValidDebugInfo(SPI.getContext()))
       DAG.setRoot(DAG.getDbgStopPoint(getRoot(),
                                       SPI.getLine(),
                                       SPI.getColumn(),
@@ -3756,7 +3756,7 @@
   case Intrinsic::dbg_region_start: {
     DwarfWriter *DW = DAG.getDwarfWriter();
     DbgRegionStartInst &RSI = cast<DbgRegionStartInst>(I);
-    if (DW && RSI.getContext()) {
+    if (DW && RSI.getContext() && DW->ValidDebugInfo(RSI.getContext())) {
       unsigned LabelID = 
         DW->RecordRegionStart(cast<GlobalVariable>(RSI.getContext()));
       DAG.setRoot(DAG.getLabel(ISD::DBG_LABEL, getRoot(), LabelID));
@@ -3767,7 +3767,7 @@
   case Intrinsic::dbg_region_end: {
     DwarfWriter *DW = DAG.getDwarfWriter();
     DbgRegionEndInst &REI = cast<DbgRegionEndInst>(I);
-    if (DW && REI.getContext()) {
+    if (DW && REI.getContext() && DW->ValidDebugInfo(REI.getContext())) {
       unsigned LabelID = 
         DW->RecordRegionEnd(cast<GlobalVariable>(REI.getContext()));
       DAG.setRoot(DAG.getLabel(ISD::DBG_LABEL, getRoot(), LabelID));
@@ -3780,7 +3780,7 @@
     if (!DW) return 0;
     DbgFuncStartInst &FSI = cast<DbgFuncStartInst>(I);
     Value *SP = FSI.getSubprogram();
-    if (SP) {
+    if (SP && DW->ValidDebugInfo(SP)) {
       // llvm.dbg.func.start implicitly defines a dbg_stoppoint which is
       // what (most?) gdb expects.
       DISubprogram Subprogram(cast<GlobalVariable>(SP));
@@ -3802,7 +3802,7 @@
     DwarfWriter *DW = DAG.getDwarfWriter();
     DbgDeclareInst &DI = cast<DbgDeclareInst>(I);
     Value *Variable = DI.getVariable();
-    if (DW && Variable)
+    if (DW && Variable && DW->ValidDebugInfo(Variable))
       DAG.setRoot(DAG.getNode(ISD::DECLARE, MVT::Other, getRoot(),
                               getValue(DI.getAddress()), getValue(Variable)));
     return 0;