16 Commits

Author SHA1 Message Date
River Riddle
de2d0dfbca Fold the functionality of OperationInst into Instruction. OperationInst still exists as a forward declaration and will be removed incrementally in a set of followup cleanup patches.
PiperOrigin-RevId: 232198540
2019-03-29 16:09:19 -07:00
River Riddle
36babbd781 Change the ForInst induction variable to be a block argument of the body instead of the ForInst itself. This is a necessary step in converting ForInst into an operation.
PiperOrigin-RevId: 231064139
2019-03-29 15:40:23 -07:00
River Riddle
4a7dfa7882 Add order bit to instructions to lazily track dominance queries. This improves the performance of dominance queries, which are used quite often within the compiler(especially within the verifier).
This reduced the execution time of a few internal tests from ~2 minutes to ~4 seconds.

PiperOrigin-RevId: 230819723
2019-03-29 15:35:23 -07:00
Uday Bondhugula
6e4f3e40c7 Fix outdated comments
PiperOrigin-RevId: 229300301
2019-03-29 15:16:08 -07:00
Uday Bondhugula
f12182157e Introduce PostDominanceInfo, fix properlyDominates() for Instructions
- introduce PostDominanceInfo in the right/complete way and use that for post
  dominance check in store-load forwarding
- replace all uses of Analysis/Utils::dominates/properlyDominates with
  DominanceInfo::dominates/properlyDominates
- drop all redundant copies of dominance methods in Analysis/Utils/
- in pipeline-data-transfer, replace dominates call with a much less expensive
  check; similarly, substitute dominates() in checkMemRefAccessDependence with
  a simpler check suitable for that context
- fix a bug in properlyDominates
- improve doc for 'for' instruction 'body'

PiperOrigin-RevId: 227320507
2019-03-29 14:48:44 -07:00
Uday Bondhugula
cea9f28a2c Fix dominates() for block's.
- dominates() for blocks was assuming that there was only a single block at the
  top level whenever there was a hierarchy of blocks (as in the case of 'for'/'if'
  instructions).
- fix the comments as well

PiperOrigin-RevId: 227319738
2019-03-29 14:48:28 -07:00
Chris Lattner
56e2a6cc3b Merge the verifier logic for all functions into a unified framework, this
requires enhancing DominanceInfo to handle the structure of an ML function,
which is required anyway.  Along the way, this also fixes a const correctness
problem with Instruction::getBlock().

This is step 24/n towards merging instructions and statements.

PiperOrigin-RevId: 227228900
2019-03-29 14:45:43 -07:00
Chris Lattner
456ad6a8e0 Standardize naming of statements -> instructions, revisting the code base to be
consistent and moving the using declarations over.  Hopefully this is the last
truly massive patch in this refactoring.

This is step 21/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227178245
2019-03-29 14:44:30 -07:00
Chris Lattner
315a466aed Rename BasicBlock and StmtBlock to Block, and make a pass cleaning it up. I did not make an effort to rename all of the 'bb' names in the codebase, since they are still correct and any specific missed once can be fixed up on demand.
The last major renaming is Statement -> Instruction, which is why Statement and
Stmt still appears in various places.

This is step 19/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227163082
2019-03-29 14:43:58 -07:00
Chris Lattner
69d9e990fa Eliminate the using decls for MLFunction and CFGFunction standardizing on
Function.

This is step 18/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227139399
2019-03-29 14:43:13 -07:00
Chris Lattner
d798f9bad5 Rename BBArgument -> BlockArgument, Op::getOperation -> Op::getInst(),
StmtResult -> InstResult, StmtOperand -> InstOperand, and remove the old names.

This is step 17/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227121537
2019-03-29 14:42:40 -07:00
Chris Lattner
3f190312f8 Merge SSAValue, CFGValue, and MLValue together into a single Value class, which
is the new base of the SSA value hierarchy.  This CL also standardizes all the
nomenclature and comments to use 'Value' where appropriate.  This also eliminates a large number of cast<MLValue>(x)'s, which is very soothing.

This is step 11/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227064624
2019-03-29 14:40:06 -07:00
Chris Lattner
776b035646 Eliminate the Instruction, BasicBlock, CFGFunction, MLFunction, and ExtFunction classes, using the Statement/StmtBlock hierarchy and Function instead.
This *only* changes the internal data structures, it does not affect the user visible syntax or structure of MLIR code.  Function gets new "isCFG()" sorts of predicates as a transitional measure.

This patch is gross in a number of ways, largely in an effort to reduce the amount of mechanical churn in one go.  It introduces a bunch of using decls to keep the old names alive for now, and a bunch of stuff needs to be renamed.

This is step 10/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227044402
2019-03-29 14:39:49 -07:00
River Riddle
8b6bc09f48 Merge OperationInst functionality into Instruction.
We do some limited renaming here but define an alias for OperationInst so that a follow up cl can solely perform the large scale renaming.

PiperOrigin-RevId: 221726963
2019-03-29 13:59:37 -07:00
River Riddle
503caf0722 Replace TerminatorInst with builtin terminator operations.
Note: Terminators will be merged into the operations list in a follow up patch.
PiperOrigin-RevId: 221670037
2019-03-29 13:58:55 -07:00
Chris Lattner
d6f8ec7bac Introduce [post]dominator tree and related infrastructure, use it in CFG func
verifier.  We get most of this infrastructure directly from LLVM, we just
need to adapt it to our CFG abstraction.

This has a few unrelated changes engangled in it:
 - getFunction() in various classes was const incorrect, fix it.
 - This moves Verifier.cpp to the analysis library, since Verifier depends on
   dominance and these are both really analyses.
 - IndexedAccessorIterator::reference was defined wrong, leading to really
   exciting template errors that were fun to diagnose.
 - This flips the boolean sense of the foldOperation() function in constant
   folding pass in response to previous patch feedback.

PiperOrigin-RevId: 214046593
2019-03-29 13:17:20 -07:00