[CodeView] Initial support for emitting S_THUNK32 symbols for compiler...

When emitting CodeView debug information, compiler-generated thunk routines
should be emitted using S_THUNK32 symbols instead of S_GPROC32_ID symbols so
Visual Studio can properly step into the user code.  This initial support only
handles standard thunk ordinals.

Differential Revision: https://reviews.llvm.org/D43838

llvm-svn: 330132

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/CodeView/SymbolDumper.cpp b/llvm/lib/DebugInfo/CodeView/SymbolDumper.cpp
index df75f52661e..af249adc977 100644
--- a/llvm/lib/DebugInfo/CodeView/SymbolDumper.cpp
+++ b/llvm/lib/DebugInfo/CodeView/SymbolDumper.cpp
@@ -129,6 +129,7 @@ Error CVSymbolDumperImpl::visitKnownRecord(CVSymbol &CVR, BlockSym &Block) {
 }
 
 Error CVSymbolDumperImpl::visitKnownRecord(CVSymbol &CVR, Thunk32Sym &Thunk) {
+  W.printString("Name", Thunk.Name);
   W.printNumber("Parent", Thunk.Parent);
   W.printNumber("End", Thunk.End);
   W.printNumber("Next", Thunk.Next);