Path from Ashok Thirumurthi:

The attached patch adds eValueTypeVector to lldb_private::Value.  The nested struct Vector is patterned after RegisterValue::m_data.buffer.  This change to Value allows ClangExpressionDeclMap::LookupDecl to return vector register data for consumption by InterpreterStackFrame::ResolveValue.  Note that ResolveValue was tweaked slightly to allocate enough memory for vector registers.
 
An immediate result of this patch is that "expr $xmm0" generates the same results on Linux as on the Mac, which is good enough for TestRegisters.py.  In addition, the log of m_memory.PrintData(data_region.m_base, data_region.m_extent) shows that the register content has been resolved successfully.  On the other hand, the output is glaringly empty:
    runCmd: expr $xmm0
    output: (unsigned char __attribute__((ext_vector_type(16)))) $0 = {}
    Expecting sub string: vector_type
    Matched

llvm-svn: 167033

1 files changed, 7 insertions, 2 deletions

diff --git a/lldb/source/Expression/ClangExpressionDeclMap.cpp b/lldb/source/Expression/ClangExpressionDeclMap.cpp
index 940be042c3d..f8304b98b6b 100644
--- a/lldb/source/Expression/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Expression/ClangExpressionDeclMap.cpp
@@ -1083,8 +1083,13 @@ ClangExpressionDeclMap::LookupDecl (clang::NamedDecl *decl, ClangExpressionVaria
             Value ret;
             
             ret.SetContext(Value::eContextTypeRegisterInfo, reg_info);
-            if (!reg_value.GetScalarValue(ret.GetScalar()))
-                return Value();
+            if (reg_info->encoding == eEncodingVector) 
+			{
+                if (ret.SetVectorBytes((uint8_t *)reg_value.GetBytes(), reg_value.GetByteSize(), reg_value.GetByteOrder()))
+                    ret.SetScalarFromVector();
+            }
+            else if (!reg_value.GetScalarValue(ret.GetScalar()))
+				return Value();
             
             return ret;
         }