[ObjectYAML] Support for DW_FORM_implicit_const DWARF5 form

This patch adds support to the DWARF YAML reader and writer for the new DWARF5 abbreviation form, DW_FORM_implicit_const.

The attribute was added in r291599.

llvm-svn: 297091

2 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/ObjectYAML/DWARFEmitter.cpp b/llvm/lib/ObjectYAML/DWARFEmitter.cpp
index d3c244e808b..c1116a1be46 100644
--- a/llvm/lib/ObjectYAML/DWARFEmitter.cpp
+++ b/llvm/lib/ObjectYAML/DWARFEmitter.cpp
@@ -74,6 +74,8 @@ void DWARFYAML::EmitDebugAbbrev(raw_ostream &OS, const DWARFYAML::Data &DI) {
     for (auto Attr : AbbrevDecl.Attributes) {
       encodeULEB128(Attr.Attribute, OS);
       encodeULEB128(Attr.Form, OS);
+      if (Attr.Form == dwarf::DW_FORM_implicit_const)
+        encodeSLEB128(Attr.Value, OS);
     }
     encodeULEB128(0, OS);
     encodeULEB128(0, OS);
diff --git a/llvm/lib/ObjectYAML/DWARFYAML.cpp b/llvm/lib/ObjectYAML/DWARFYAML.cpp
index f55d59aff04..2a8cdd5fd4a 100644
--- a/llvm/lib/ObjectYAML/DWARFYAML.cpp
+++ b/llvm/lib/ObjectYAML/DWARFYAML.cpp
@@ -54,6 +54,8 @@ void MappingTraits<DWARFYAML::AttributeAbbrev>::mapping(
     IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev) {
   IO.mapRequired("Attribute", AttAbbrev.Attribute);
   IO.mapRequired("Form", AttAbbrev.Form);
+  if(AttAbbrev.Form == dwarf::DW_FORM_implicit_const)
+    IO.mapRequired("Value", AttAbbrev.Value);
 }
 
 void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(