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* Trim trailing whitespace
* Ensure final new lines
* Convert line endings from CRLF to LF
* Replace tabs with spaces
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* #52 Update chapter8 to align with chapter7
* #52 Update chapter8 to align with chapter7
* #52 Fix spacing
* #51 get started on break and continue
* #51 get started on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* break & continue scopes are made lazily, and merged into as discovered
Drop ContBreak.
Drop ScopeNode.addScope.
Add a simple mergeScopes.
Simplify Region.inProgress; drop from child classes, use in Region.
Add a ConstantNode.XCONTROL shortcut.
* Fix some regressions
* Error on dead code after break/continue
* A more robust dead-def check
* Fix for dead loop-back path
* Fix scope shadowing bug with continue/break
Turn on LAZY phis by default; fix minor golden test results
* Fix a case with both break & continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 fix erroneous push of scope
* #51 fix import
* #51 update test expected results
* #51 Start Chapter8 writeup
* #51 Start Chapter8 writeup
* #51 _scope needs killing after continue
* Add graph evaluator (#56)
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 update code comments / add assertion
* #51 revert assertion
* #51 evaluate graph to verify test outcome
* #51 add code snippets
* #51 add examples
* Cleanup README
Comment for usefullness of true Loops.
Try to distiguish `PhiNode` as the programming construct from `phi` as the mathematically SSA notation.
Flow long lines.
Remove LAZY flag, set as `true`. Fold up true tests.
* minor comment
* #51 Check _breakScope is not null when parsing break or continue to detect use outside of loop
* #51 in parseComparison we need to move the op= version above the op version, since at this time using <= and >= does not work since they are parsed as > and < with a preceeding = which causes an error
* #51 Update main README to link to chapter 8
* Remove useless test
* Fix regression for dead infinite loop
Add shortcut to fancy IRPrettyPrint
---------
Co-authored-by: Cliff Click <cliffc@acm.org>
Co-authored-by: XmiliaH <45106915+XmiliaH@users.noreply.github.com>
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Also fix broken links in README
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* #52 Update chapter8 to align with chapter7
* #52 Update chapter8 to align with chapter7
* #52 Fix spacing
* #51 get started on break and continue
* #51 get started on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* break & continue scopes are made lazily, and merged into as discovered
Drop ContBreak.
Drop ScopeNode.addScope.
Add a simple mergeScopes.
Simplify Region.inProgress; drop from child classes, use in Region.
Add a ConstantNode.XCONTROL shortcut.
* Fix some regressions
* Error on dead code after break/continue
* A more robust dead-def check
* Fix for dead loop-back path
* Fix scope shadowing bug with continue/break
Turn on LAZY phis by default; fix minor golden test results
* Fix a case with both break & continue
* #51 more on break and continue
* #51 more on break and continue
* #51 more on break and continue
* #51 fix erroneous push of scope
* #51 fix import
* #51 update test expected results
* #51 Start Chapter8 writeup
* #51 Start Chapter8 writeup
* #51 _scope needs killing after continue
* Add graph evaluator (#56)
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 wip writeup
* #51 update code comments / add assertion
* #51 revert assertion
* #51 evaluate graph to verify test outcome
* #51 add code snippets
* #51 add examples
* Cleanup README
Comment for usefullness of true Loops.
Try to distiguish `PhiNode` as the programming construct from `phi` as the mathematically SSA notation.
Flow long lines.
Remove LAZY flag, set as `true`. Fold up true tests.
* minor comment
* #51 Check _breakScope is not null when parsing break or continue to detect use outside of loop
* #51 in parseComparison we need to move the op= version above the op version, since at this time using <= and >= does not work since they are parsed as > and < with a preceeding = which causes an error
* #51 Update main README to link to chapter 8
* Remove useless test
---------
Co-authored-by: Cliff Click <cliffc@acm.org>
Co-authored-by: XmiliaH <45106915+XmiliaH@users.noreply.github.com>
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* #52 Update chapter8 to align with chapter7
* #52 Update chapter8 to align with chapter7
* #52 Fix spacing
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* #44 Start on chapter 7
* #44
Temp hack on printing to not break on cycles.
Parse while statement.
* #44 Remove unnecessary method
* #44 Remove unnecessary phi map
* #44 Phi should have existing nodes from both scopes as input
* #44 We need to only insert phis once for each name that is looked up. To do so,
we need to know when a named is looked up first time inside the loop body.
The phi must have its second input added later on after the loop is fully parsed.
* #44 Add phi also when update() is called.
Only add phi if name was known at loop start
* #44 Only create phi in loop body if var binding in head != body.
During finish() lookup in body directly.
* #44 Update the print output to make it similar to that in Xmilia's fork
* #44 Disable peephole for phis & region involved in while loop
* Fix broken tests
Remove "disablePeephole" set in some tests, and remaining set for other tests, so a bulk test-all fails because disablePeephole is true for all.
Reset disablePeephole in Node.reset
Switch HashSet for BitSet (touches all).
* Restructure Node class
Group printing, group node & edge manipulations, group optimizations.
Also, fix LoopRegion idom, it does not use Region idom but uses the original
* #44 Node printing
* #44 Node printing
* #44 Fix control edges in loop region
Change label of loop region
Fix the output count in dump
* #44 Revise dump output
* #44 When a LoopRegionNode is duplicated, ensure the dupe is also a LoopRegionNode
* #44 When a LoopScopeNode is merged, we merge the names set too
* #44 When a LoopScopeNode is merged, we merge the names set too
* #44 Fix print1() on RegionNode to use label()
* #44 Fix bug caused by incorrect comparison of nodes between body and head of loop; the check must be performed before any phis are created
* Revert "#44 Fix bug caused by incorrect comparison of nodes between body and head of loop; the check must be performed before any phis are created"
This reverts commit 5f729709855046c5c10904f08385fd1aec9a298a.
* #44 Fix bug caused by incorrect comparison of nodes between body and head of loop; the check must be performed before any phis are created
* #44 when we create a phi incrementally for a loop region, all scopes that are cloned from the original must get the same phi update
* #44 test case
* #44 test case
* Squashed commit of the following:
commit 15666e287e6bbc39b3fcc49939165a1e908d43b2
Author: Cliff Click <cliffc@acm.org>
Date: Mon Nov 27 09:45:40 2023 -0800
lazy/eager phis
Eager phis by default, but can flip Parser.LAZY to switch to lazy phis. Several tests golden answers change when flipping this flag due to minor node renumbering.
Phi combines same_inputs and singleUniqueInput.
Fancier basic-block-like printing. Uses isMultiHead & isMultiTail which show up in many Nodes.
Remove blanks in triple-quote strings.
commit 6ea70182a92b7db4fe5a1fdc2c4491842ef77ee5
Author: Cliff Click <cliffc@acm.org>
Date: Sun Nov 26 11:13:22 2023 -0800
Remove dead scopes
Add a debug find
commit a52c06a47bf1e56866d8b4d043290838f053ad76
Author: Cliff Click <cliffc@acm.org>
Date: Sun Nov 26 10:21:48 2023 -0800
No constraints on backedges
nicer loopy graphs
commit b5ab550098355f0b66bf24b40adf2e5ba4d86e4e
Author: Cliff Click <cliffc@acm.org>
Date: Sun Nov 26 10:13:22 2023 -0800
Fix regression
commit 30a7f5c734c686c02d3ca479914c9427b65cc469
Author: Cliff Click <cliffc@acm.org>
Date: Sat Nov 25 21:51:47 2023 -0800
minor cleanup
commit ad742b795ce0c93cfc82b2b11740261cfd923d02
Author: Cliff Click <cliffc@acm.org>
Date: Sat Nov 25 21:47:05 2023 -0800
Fixes lazy phi
Scope now takes a 'loop' option on dupping; the dup'ed Scope is filled with "Lazy Phi" sentinels - markers to indicate a Phi is need if this variable is ever referenced. If its never referenced, at the loop exit the "Lazy Phi" unwinds back to the original value. Lookup and update calls lazily insert concrete Phis over "Lazy Phis" at first touch.
Rename _allScopes to _xScopes its "active" not "all" scopes now.
Remove try/finally block at end, because a compiler bug throws, then attempts a GraphViz on a broken graph, then throws again, hiding the original bug.
Removed 1 extra layer of Scopes.
Scope printing now prints in edge order; added a reversemap for printing.
More touches to ascii printing.
* Remove flag to parseBlock
* Bugfix for lazy on empty loop body
Remove extra phi name-matching code
* Keep head alive until entire end_loop merging is done
* Create chapter 8 as a copy of chapter 7
* #44 Chapter 7 is now eager phis only (#46)
* #44 Chapter 7 is now eager phis only
* MOVE IR Printing to dedicated class to declutter Node. Remove Ary (#49)
* #44 Move IR printing to dedicated class to declutter Node, and remove Ary
* #44 refactor Node.delUse() to use common del()
* #44 Some cleanups
* #44 Some cleanups
* #44 Some cleanups
* #44 Some cleanups
* Revert "#44 Some cleanups"
This reverts commit 2702c338c8bdaa5ef2128000e26f1a8496baf34a.
* #44 Some cleanups
* #44 Some cleanups
* #44 Some cleanups
* #44 Fix typo
* #44 Fix markdown formatting
* #44 Remove line numbers from code snippets
---------
Co-authored-by: Cliff Click <cliffc@acm.org>
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