From: Frederic Riss <friss@apple.com>
Date: Wed, 8 Oct 2014 14:59:44 +0000 (+0000)
Subject: Update dwarf::ApplePropertyAttributes enum to meaningful values.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=6c54948916e4bd2d7e025fa32e0c8e21127c7d0c;p=oota-llvm.git

Update dwarf::ApplePropertyAttributes enum to meaningful values.

Summary:
We currently emit an DW_AT_APPLE_property_attribute with a value that is a
bitfield describing the various attributes applied to an ObjectiveC property.
While trying to add testing to one of my dwarfdump patches that would pretty
print that, I realized this information looks totally broken and has maybe
never been correct.

As with every DWARF info, we have some enum in Dwarf.h that describes this
attribute (enum ApplePropertyAttributes). It seems however that the attribute
value is set from another definition of these flags in Sema/DeclSpec.h (enum
ObjCPropertyAttributeKind). And these 2 enums aren't in sync.

This patch updates the Dwarf.h values to the ones we are (and have been for
a very long time) emitting. We change some publicly (and even documented
in SourceLevelDebugging.rst) values, but I doubt this could be an issue as
the information has been wrong for so long...

Reviewers: echristo, dblaikie, aprantl

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5653

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219311 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/docs/SourceLevelDebugging.rst b/docs/SourceLevelDebugging.rst
index ad1888cd403..3a5fa6ef24b 100644
--- a/docs/SourceLevelDebugging.rst
+++ b/docs/SourceLevelDebugging.rst
@@ -1214,21 +1214,33 @@ New DWARF Attributes
 New DWARF Constants
 ^^^^^^^^^^^^^^^^^^^
 
-+--------------------------------+-------+
-| Name                           | Value |
-+================================+=======+
-| DW_AT_APPLE_PROPERTY_readonly  | 0x1   |
-+--------------------------------+-------+
-| DW_AT_APPLE_PROPERTY_readwrite | 0x2   |
-+--------------------------------+-------+
-| DW_AT_APPLE_PROPERTY_assign    | 0x4   |
-+--------------------------------+-------+
-| DW_AT_APPLE_PROPERTY_retain    | 0x8   |
-+--------------------------------+-------+
-| DW_AT_APPLE_PROPERTY_copy      | 0x10  |
-+--------------------------------+-------+
-| DW_AT_APPLE_PROPERTY_nonatomic | 0x20  |
-+--------------------------------+-------+
++--------------------------------------+-------+
+| Name                                 | Value |
++======================================+=======+
+| DW_APPLE_PROPERTY_readonly           | 0x01  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_getter             | 0x02  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_assign             | 0x04  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_readwrite          | 0x08  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_retain             | 0x10  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_copy               | 0x20  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_nonatomic          | 0x40  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_setter             | 0x80  |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_atomic             | 0x100 |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_weak               | 0x200 |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_strong             | 0x400 |
++--------------------------------------+-------+
+| DW_APPLE_PROPERTY_unsafe_unretained  | 0x800 |
++--------------------------------+-----+-------+
 
 Name Accelerator Tables
 -----------------------
diff --git a/include/llvm/Support/Dwarf.h b/include/llvm/Support/Dwarf.h
index eeaebc7c582..c38a3474dee 100644
--- a/include/llvm/Support/Dwarf.h
+++ b/include/llvm/Support/Dwarf.h
@@ -780,14 +780,22 @@ enum LocationListEntry : unsigned char {
   DW_LLE_offset_pair_entry
 };
 
+/// Contstants for the DW_APPLE_PROPERTY_attributes attribute.
+/// Keep this list in sync with clang's DeclSpec.h ObjCPropertyAttributeKind.
 enum ApplePropertyAttributes {
   // Apple Objective-C Property Attributes
   DW_APPLE_PROPERTY_readonly = 0x01,
-  DW_APPLE_PROPERTY_readwrite = 0x02,
+  DW_APPLE_PROPERTY_getter = 0x02,
   DW_APPLE_PROPERTY_assign = 0x04,
-  DW_APPLE_PROPERTY_retain = 0x08,
-  DW_APPLE_PROPERTY_copy = 0x10,
-  DW_APPLE_PROPERTY_nonatomic = 0x20
+  DW_APPLE_PROPERTY_readwrite = 0x08,
+  DW_APPLE_PROPERTY_retain = 0x10,
+  DW_APPLE_PROPERTY_copy = 0x20,
+  DW_APPLE_PROPERTY_nonatomic = 0x40,
+  DW_APPLE_PROPERTY_setter = 0x80,
+  DW_APPLE_PROPERTY_atomic = 0x100,
+  DW_APPLE_PROPERTY_weak =   0x200,
+  DW_APPLE_PROPERTY_strong = 0x400,
+  DW_APPLE_PROPERTY_unsafe_unretained = 0x800
 };
 
 /// TagString - Return the string for the specified tag.