[codeview] Add DISubprogram::ThisAdjustment

Summary:
This represents the adjustment applied to the implicit 'this' parameter
in the prologue of a virtual method in the MS C++ ABI. The adjustment is
always zero unless multiple inheritance is involved.

This increases the size of DISubprogram by 8 bytes, unfortunately. The
adjustment really is a signed 32-bit integer. If this size increase is
too much, we could probably win it back by splitting out a subclass with
info specific to virtual methods (virtuality, vindex, thisadjustment,
containingType).

Reviewers: aprantl, dexonsmith

Subscribers: aaboud, amccarth, llvm-commits

Differential Revision: http://reviews.llvm.org/D21614

llvm-svn: 274325

1 files changed, 11 insertions, 11 deletions

diff --git a/llvm/lib/IR/DebugInfoMetadata.cpp b/llvm/lib/IR/DebugInfoMetadata.cpp
index ea4ebf088c1..c58e3685b3c 100644
--- a/llvm/lib/IR/DebugInfoMetadata.cpp
+++ b/llvm/lib/IR/DebugInfoMetadata.cpp
@@ -412,22 +412,22 @@ DISubprogram *DISubprogram::getImpl(
     MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type,
     bool IsLocalToUnit, bool IsDefinition, unsigned ScopeLine,
     Metadata *ContainingType, unsigned Virtuality, unsigned VirtualIndex,
-    unsigned Flags, bool IsOptimized, Metadata *Unit, Metadata *TemplateParams,
-    Metadata *Declaration, Metadata *Variables, StorageType Storage,
-    bool ShouldCreate) {
+    int ThisAdjustment, unsigned Flags, bool IsOptimized, Metadata *Unit,
+    Metadata *TemplateParams, Metadata *Declaration, Metadata *Variables,
+    StorageType Storage, bool ShouldCreate) {
   assert(isCanonical(Name) && "Expected canonical MDString");
   assert(isCanonical(LinkageName) && "Expected canonical MDString");
-  DEFINE_GETIMPL_LOOKUP(DISubprogram,
-                        (Scope, Name, LinkageName, File, Line, Type,
-                         IsLocalToUnit, IsDefinition, ScopeLine, ContainingType,
-                         Virtuality, VirtualIndex, Flags, IsOptimized, Unit,
-                         TemplateParams, Declaration, Variables));
+  DEFINE_GETIMPL_LOOKUP(
+      DISubprogram,
+      (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit, IsDefinition,
+       ScopeLine, ContainingType, Virtuality, VirtualIndex, ThisAdjustment,
+       Flags, IsOptimized, Unit, TemplateParams, Declaration, Variables));
   Metadata *Ops[] = {File,           Scope,       Name,           Name,
                      LinkageName,    Type,        ContainingType, Unit,
                      TemplateParams, Declaration, Variables};
-  DEFINE_GETIMPL_STORE(DISubprogram,
-                       (Line, ScopeLine, Virtuality, VirtualIndex, Flags,
-                        IsLocalToUnit, IsDefinition, IsOptimized),
+  DEFINE_GETIMPL_STORE(DISubprogram, (Line, ScopeLine, Virtuality, VirtualIndex,
+                                      ThisAdjustment, Flags, IsLocalToUnit,
+                                      IsDefinition, IsOptimized),
                        Ops);
 }