[tablegen] Add !listconcat operator with the similar semantics as !strconcat
Summary:
It concatenates two or more lists. In addition to the !strconcat semantics
the lists must have the same element type.
My overall aim is to make it easy to append to Instruction.Predicates
rather than override it. This can be done by concatenating lists passed as
arguments, or by concatenating lists passed in additional fields.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: hfinkel, llvm-commits
Differential Revision: http://reviews.llvm.org/D3506
llvm-svn: 208183
diff --git a/llvm/docs/TableGen/LangIntro.rst b/llvm/docs/TableGen/LangIntro.rst
index 5b6094f..3e74dff 100644
--- a/llvm/docs/TableGen/LangIntro.rst
+++ b/llvm/docs/TableGen/LangIntro.rst
@@ -160,6 +160,12 @@
remaining elements in the list may be arbitrary other values, including
nested ```dag``' values.
+``!listconcat(a, b, ...)``
+ A list value that is the result of concatenating the 'a' and 'b' lists.
+ The lists must have the same element type.
+ More than two arguments are accepted with the result being the concatenation
+ of all the lists given.
+
``!strconcat(a, b, ...)``
A string value that is the result of concatenating the 'a' and 'b' strings.
More than two arguments are accepted with the result being the concatenation