vendor/llvm/llvm-trunk-r351319

1 files changed, 62 insertions, 0 deletions

diff --git a/include/llvm/DebugInfo/CodeView/SymbolRecordHelpers.h b/include/llvm/DebugInfo/CodeView/SymbolRecordHelpers.h
new file mode 100644
index 000000000000..3713fe118eaa
--- /dev/null
+++ b/include/llvm/DebugInfo/CodeView/SymbolRecordHelpers.h
@@ -0,0 +1,62 @@
+//===- SymbolRecordHelpers.h ------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_SYMBOLRECORDHELPERS_H
+#define LLVM_DEBUGINFO_CODEVIEW_SYMBOLRECORDHELPERS_H
+
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+
+namespace llvm {
+namespace codeview {
+/// Return true if this symbol opens a scope. This implies that the symbol has
+/// "parent" and "end" fields, which contain the offset of the S_END or
+/// S_INLINESITE_END record.
+inline bool symbolOpensScope(SymbolKind Kind) {
+  switch (Kind) {
+  case SymbolKind::S_GPROC32:
+  case SymbolKind::S_LPROC32:
+  case SymbolKind::S_LPROC32_ID:
+  case SymbolKind::S_GPROC32_ID:
+  case SymbolKind::S_BLOCK32:
+  case SymbolKind::S_SEPCODE:
+  case SymbolKind::S_THUNK32:
+  case SymbolKind::S_INLINESITE:
+  case SymbolKind::S_INLINESITE2:
+    return true;
+  default:
+    break;
+  }
+  return false;
+}
+
+/// Return true if this ssymbol ends a scope.
+inline bool symbolEndsScope(SymbolKind Kind) {
+  switch (Kind) {
+  case SymbolKind::S_END:
+  case SymbolKind::S_PROC_ID_END:
+  case SymbolKind::S_INLINESITE_END:
+    return true;
+  default:
+    break;
+  }
+  return false;
+}
+
+/// Given a symbol P for which symbolOpensScope(P) == true, return the
+/// corresponding end offset.
+uint32_t getScopeEndOffset(const CVSymbol &Symbol);
+uint32_t getScopeParentOffset(const CVSymbol &Symbol);
+
+CVSymbolArray limitSymbolArrayToScope(const CVSymbolArray &Symbols,
+                                      uint32_t ScopeBegin);
+
+} // namespace codeview
+} // namespace llvm
+
+#endif