[DebugInfo] Add calling convention support for DWARF and CodeView

Summary:
Now DISubroutineType has a 'cc' field which should be a DW_CC_ enum.  If
it is present and non-zero, the backend will emit it as a
DW_AT_calling_convention attribute. On the CodeView side, we translate
it to the appropriate enum for the LF_PROCEDURE record.

I added a new LLVM vendor specific enum to the list of DWARF calling
conventions. DWARF does not appear to attempt to standardize these, so I
assume it's OK to do this until we coordinate with GCC on how to emit
vectorcall convention functions.

Reviewers: dexonsmith, majnemer, aaboud, amccarth

Subscribers: mehdi_amini, llvm-commits

Differential Revision: http://reviews.llvm.org/D21114

llvm-svn: 272197

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/IR/DIBuilder.cpp b/llvm/lib/IR/DIBuilder.cpp
index 9a61afb..0c1876a 100644
--- a/llvm/lib/IR/DIBuilder.cpp
+++ b/llvm/lib/IR/DIBuilder.cpp
@@ -420,8 +420,8 @@ DICompositeType *DIBuilder::createUnionType(
 }
 
 DISubroutineType *DIBuilder::createSubroutineType(DITypeRefArray ParameterTypes,
-                                                  unsigned Flags) {
-  return DISubroutineType::get(VMContext, Flags, ParameterTypes);
+                                                  unsigned Flags, unsigned CC) {
+  return DISubroutineType::get(VMContext, Flags, CC, ParameterTypes);
 }
 
 DICompositeType *DIBuilder::createExternalTypeRef(unsigned Tag, DIFile *File,