Commit Graph

4 Commits

Author SHA1 Message Date
Owen Anderson
6b31d4ea36 Teach tblgen's set theory "sequence" operator to support an optional stride operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157416 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-24 21:37:08 +00:00
Jakob Stoklund Olesen
5b52f6d655 Add an (interleave A, B, ...) SetTheory operator.
This will interleave the elements from two or more lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148824 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-24 18:06:05 +00:00
Peter Collingbourne
5d5c0624d0 s/tblgen/llvm-tblgen/g in a few missed places, including the tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141294 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-06 13:39:59 +00:00
Jakob Stoklund Olesen
1de99829b6 Teach TableGen to evaluate DAG expressions as set operations.
A TableGen backend can define how certain classes can be expanded into
ordered sets of defs, typically by evaluating a specific field in the
record. The SetTheory class can then evaluate DAG expressions that refer
to these named sets.

A number of standard set and list operations are predefined, and the
backend can add more specialized operators if needed. The -print-sets
backend is used by SetTheory.td to provide examples.

This is intended to simplify how register classes are defined:

  def GR32_NOSP : RegisterClass<"X86", [i32], 32, (sub GR32, ESP)>;

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132621 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-04 04:11:37 +00:00