Process each multidef declared in a multiclass. Iterate through the
list and instantiate a def in the multiclass for each item, resolving
the list item to the temporary iterator (possibly) used in the
multidef ObjectBody. We then process each generated def in the normal
way.
llvm-svn: 141233
Add parser support to recognize multidefs. No processing on the
multidef is done at this point. The grammar is:
MultiDef = MULTIDEF ObjectName < Value, Declaration, Value > ObjectBody
The first Value must be resolveable to a list and the second Value
must be resolveable to an integer. The Declaration is a temporary
value used as an iterator to refer to list items during processing.
It may be passed into the ObjectBody where it will be substituted with
the list value used to instantiate each def.
llvm-svn: 141232
Move the code to instantiate a multiclass def, bind its arguments and
resolve its members into three helper functions. These will be reused
to support a new kind of multiclass def: a multidef.
llvm-svn: 141229
When resolving an operator list element reference, resolve all
operator operands and try to fold the operator first. This allows the
operator to collapse to a list which may then be indexed.
Before, it was not possible to do this:
class D<int a, int b> { ... }
class C<list<int> A> : D<A[0], A[1]>;
class B<list<int> b> : C<!foreach(...,b)>;
Now it is.
llvm-svn: 141101
This patch adds a preprocessor that can expand nested for-loops for
saving some copy-n-paste in *.td files.
The preprocessor is not yet integrated with TGParser, and so it has
no direct effect on *.td inputs. However, you may preprocess an td
input (and only preprocess it).
To test the proprecessor, type:
tblgen -E -o $@ $<
llvm-svn: 141079
David Greene