vendor/llvm/llvm-trunk-r290819

1 files changed, 10 insertions, 8 deletions

diff --git a/lib/CodeGen/AsmPrinter/DebugHandlerBase.h b/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
index b8bbcec133fd..c00fa189d94a 100644
--- a/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
+++ b/lib/CodeGen/AsmPrinter/DebugHandlerBase.h
@@ -38,10 +38,12 @@ protected:
   MachineModuleInfo *MMI;
 
   /// Previous instruction's location information. This is used to
-  /// determine label location to indicate scope boundries in dwarf
-  /// debug info.
+  /// determine label location to indicate scope boundaries in debug info.
+  /// We track the previous instruction's source location (if not line 0),
+  /// whether it was a label, and its parent BB.
   DebugLoc PrevInstLoc;
   MCSymbol *PrevLabel = nullptr;
+  const MachineBasicBlock *PrevInstBB = nullptr;
 
   /// This location indicates end of function prologue and beginning of
   /// function body.
@@ -92,13 +94,13 @@ public:
   /// Return Label immediately following the instruction.
   MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
 
-  /// Determine the relative position of the pieces described by P1 and P2.
-  /// Returns  -1 if P1 is entirely before P2, 0 if P1 and P2 overlap,
-  /// 1 if P1 is entirely after P2.
-  static int pieceCmp(const DIExpression *P1, const DIExpression *P2);
+  /// Determine the relative position of the fragments described by P1 and P2.
+  /// Returns -1 if P1 is entirely before P2, 0 if P1 and P2 overlap, 1 if P1 is
+  /// entirely after P2.
+  static int fragmentCmp(const DIExpression *P1, const DIExpression *P2);
 
-  /// Determine whether two variable pieces overlap.
-  static bool piecesOverlap(const DIExpression *P1, const DIExpression *P2);
+  /// Determine whether two variable fragments overlap.
+  static bool fragmentsOverlap(const DIExpression *P1, const DIExpression *P2);
 
   /// If this type is derived from a base type then return base type size.
   static uint64_t getBaseTypeSize(const DITypeRef TyRef);