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author | Dan Gohman <gohman@apple.com> | 2009-07-17 17:16:59 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2009-07-17 17:16:59 +0000 |
commit | 9491c16e14f9fb56d5d71cd855c2d8c315fbb5ae (patch) | |
tree | 9d11324dc2c7b002aeae1439c140e8831d4253ff /include/llvm/Value.h | |
parent | 445c89a83c97176179c54bf5fbc344a597f0ed38 (diff) | |
download | llvm-9491c16e14f9fb56d5d71cd855c2d8c315fbb5ae.tar.gz llvm-9491c16e14f9fb56d5d71cd855c2d8c315fbb5ae.tar.bz2 llvm-9491c16e14f9fb56d5d71cd855c2d8c315fbb5ae.tar.xz |
Add a SubclassOptionalData field to Value. See the doxygen comment for
details.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76189 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Value.h')
-rw-r--r-- | include/llvm/Value.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/Value.h b/include/llvm/Value.h index a38d8cb8d9..35a30a81d5 100644 --- a/include/llvm/Value.h +++ b/include/llvm/Value.h @@ -62,6 +62,12 @@ class Value { const unsigned char SubclassID; // Subclass identifier (for isa/dyn_cast) unsigned char HasValueHandle : 1; // Has a ValueHandle pointing to this? protected: + /// SubclassOptionalData - This member is similar to SubclassData, however it + /// is for holding information which may be used to aid optimization, but + /// which may be cleared to zero without affecting conservative + /// interpretation. + unsigned char SubclassOptionalData : 7; + /// SubclassData - This member is defined by this class, but is not used for /// anything. Subclasses can use it to hold whatever state they find useful. /// This field is initialized to zero by the ctor. |