[SystemZ] Add support for the "o" inline asm constraint
We don't really need any special handling of "offsettable"
memory addresses, but since some existing code uses inline
asm statements with the "o" constraint, add support for this
constraint for compatibility purposes.
llvm-svn: 317807
diff --git a/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp b/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
index cd2f708..6ad8932 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelDAGToDAG.cpp
@@ -1379,8 +1379,11 @@
break;
case InlineAsm::Constraint_T:
case InlineAsm::Constraint_m:
+ case InlineAsm::Constraint_o:
// Accept an address with a long displacement and an index.
// m works the same as T, as this is the most general case.
+ // We don't really have any special handling of "offsettable"
+ // memory addresses, so just treat o the same as m.
Form = SystemZAddressingMode::FormBDXNormal;
DispRange = SystemZAddressingMode::Disp20Only;
break;