an operand mapping, which simplifies it a bit. Implement cloning for IfStmt,
rename getThenClause() to getThen() which is unambiguous and less repetitive in
use cases.
PiperOrigin-RevId: 207915990
- introduce affine integer sets into the IR
- parse and print affine integer sets (both inline or outlined) similar to
affine maps
- use integer set for IfStmt's conditional, and implement parsing of IfStmt's
conditional
- fixed an affine expr paren omission bug while one this.
TODO: parse/represent/print MLValue operands to affine integer set references.
PiperOrigin-RevId: 207779408
encapsulates an operation that is yet to be created. This is a patch towards
custom ops providing create methods that don't need to be templated, allowing
them to move out of line in the future.
PiperOrigin-RevId: 207725557
- fix/complete forStmt cloning for unrolling to work for outer loops
- create IV const's only when needed
- test outer loop unrolling by creating a short trip count unroll pass for
loops with trip counts <= <parameter>
- add unrolling test cases for multiple op results, outer loop unrolling
- fix/clean up StmtWalker class while on this
- switch unroll loop iterator values from i32 to affineint
PiperOrigin-RevId: 207645967
Unrelated minor change - remove OperationStmt::dropReferences(). Since MLFunction does not have cyclic operand references (it's an AST) destruction can be safely done w/o a special pass to drop references.
PiperOrigin-RevId: 207583024
- Implement a diagnostic hook in one of the paths in mlir-opt which
captures and reports the diagnostics nicely.
- Have the parser capture simple location information from the parser
indicating where each op came from in the source .mlir file.
- Add a verifyDominance() method to MLFuncVerifier to demo this, resolving b/112086163
- Add some PrettyStackTrace handlers to make crashes in the testsuite easier
to track down.
PiperOrigin-RevId: 207488548
- deal with non-operation stmt's (if/for stmt's) in loops being unrolled
(unrolling of non-innermost loops works).
- update uses in unrolled bodies to use results of new operations that may be
introduced in the unrolled bodies.
Unrolling now works for all kinds of loop nests - perfect nests, imperfect
nests, loops at any depth, and with any kind of operation in the body. (IfStmt
support not done, hence untested there).
Added missing dump/print method for StmtBlock.
TODO: add test case for outer loop unrolling.
PiperOrigin-RevId: 207314286
Add create function on builder to make it easier to create ops of registered types. Enables doing `builder.create<AddFOp>(lhs, rhs)` as well as having default values on the build method.
This CL does not add a default build method (i.e., create<DimOp>(...) would fail).
PiperOrigin-RevId: 207268882
MLFunctions.
- MLStmt cloning and IV replacement
- While at this, fix the innermostLoopGatherer to actually gather all the
innermost loops (it was stopping its walk at the first innermost loop it
found)
- Improve comments for MLFunction statement classes, fix inheritance order.
- Fixed StmtBlock destructor.
PiperOrigin-RevId: 207049173
- simplify operations with identity elements (multiply by 1, add with 0).
- simplify successive add/mul: fold constants, propagate constants to the
right.
- simplify floordiv and ceildiv when divisors are constants, and the LHS is a
multiply expression with RHS constant.
- fix an affine expression printing bug on paren emission.
- while on this, fix affine-map test cases file (memref's using layout maps
that were duplicates of existing ones should be emitted pointing to the
unique'd one).
PiperOrigin-RevId: 207046738
This CL adds:
* One graphdef extracted from the TF test suite. More will come.
* Scaffolding for the "graphdef2mlir" tool.
* Importing of simple graphs. Type inference is not yet working, and attributes do not work either.
* A fix for CFGFunction::~CFGFunction to not die if the function was destroyed without a terminator (for example if we exit early due to an error).
PiperOrigin-RevId: 206965992
generalize the asmprinters handling of pretty names to allow arbitrary sugar to
be dumped on various constructs. Give CFG function arguments nice "arg0" names
like MLFunctions get, and give constant integers pretty names like %c37 for a
constant 377
PiperOrigin-RevId: 206953080
handlers and to feed them with errors and warnings produced by the compiler.
Enhance Operation to be able to get its own MLIRContext on demand, simplifying
some clients. Change the verifier to emit certain errors with the diagnostic
handler.
This is steps towards reworking the verifier and diagnostic propagation but is
itself not particularly useful. More to come.
PiperOrigin-RevId: 206948643
Fix b/112039912 - we were recording 'i' instead of '%i' for loop induction variables causing "use of undefined SSA value" error.
PiperOrigin-RevId: 206884644
Two problems: 1) we didn't visit the types in ops correctly, and 2) the
general "T" version of the OpAsmPrinter inserter would match things like
MemRefType& and print it directly.
PiperOrigin-RevId: 206863642
This is doing it in a suboptimal manner by recombining [integer period literal] into a string literal and parsing that via to_float.
PiperOrigin-RevId: 206855106
This is still (intentionally) generating redundant parens for nested tightly
binding expressions, but I think that is reasonable for readability sake.
This also print x-y instead of x-(y*1)
PiperOrigin-RevId: 206847212
createOperation needs to insert the operation at 'insertPoint', which can be
anywhere (not necessarily at the end of 'statements').
PiperOrigin-RevId: 206827159
Induction variables are implemented by inheriting ForStmt from MLValue. ForStmt provides APIs that make this design decision invisible to the ForStmt users.
This CL in combination with cl/206253643 resolves http://b/111769060.
PiperOrigin-RevId: 206655937
* TensorFlow Control Flow supports variadic number of control inputs, add variant of NOperands to support at least N operands;
* Update example:
- All ops will produce control output;
- Use tf$name for mapping back to TensorFlow (a op can have a name as well as an attribute _name, using tf$name disambiguates that);
PiperOrigin-RevId: 206621280
- Generalize TwoOperands and TwoResults to NOperands and NResults, which can
be used for any fixed N.
- Rename OpImpl namespace to OpTrait, OpImpl::Base to OpBase, and TraitImpl to
TraitBase to better reflect what these are.
PiperOrigin-RevId: 206588634
and control edges. Wire the TensorFlow tests into the harness properly. Fix a bug in the CFGBuilder (not inserting at the insertion point) and flesh it out a bit more.
PiperOrigin-RevId: 206511270
- Sketch out a TensorFlow/IR directory that will hold op definitions and common TF support logic. We will eventually have TensorFlow/TF2HLO, TensorFlow/Grappler, TensorFlow/TFLite, etc.
- Add sketches of a Switch/Merge op definition, including some missing stuff like the TwoResults trait. Add a skeleton of a pass to raise this form.
- Beef up the Pass/FunctionPass definitions slightly, moving the common code out of LoopUnroll.cpp into a new IR/Pass.cpp file.
- Switch ConvertToCFG.cpp to be a ModulePass.
- Allow _ to start bare identifiers, since this is important for TF attributes.
PiperOrigin-RevId: 206502517
and OtherType. Other type is now the thing that holds AffineInt, Control,
eventually Resource, Variant, String, etc. FloatType holds the floating point
types, and allows convenient query of isa<FloatType>().
This fixes issues where we allowed control to be the element type of tensor,
memref, vector. At the same time, ban AffineInt from being an element of a
vector/memref/tensor as well since we don't need it.
I updated the spec to match this as well.
PiperOrigin-RevId: 206361942
* Add tf_control as primitive type;
* Allow $ in bare-id to allow attributes with $ (to make it trivially to mangle a TF attribute);
PiperOrigin-RevId: 206342642
Chris Lattner