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ssair: Correctly handle stmt insertion at end of basic block #50528

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merged 1 commit into from
Jul 13, 2023

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@topolarity topolarity commented Jul 12, 2023

In the presence of attach_after insertions, we have to be careful to extend the basic block to include everything up to the last insertion. We were accounting for "new" nodes (before the compaction point), but not "pending" nodes (after the compaction point).

This also adds a small bit of documentation to the API - I plan to follow up with more documentation later this week.

Fixes #50379
Fixes #50449

In the presence of `attach_after` insertions, we have to be careful to
extend the basic block to include everything up to the last insertion.
We were accounting for "new" nodes (before the compaction point), but
not "pending" nodes (after the compaction point).

Fixes JuliaLang#50379.
@topolarity topolarity requested review from maleadt and Keno July 12, 2023 20:10
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@nanosoldier runtests()

@maleadt maleadt added kind:bugfix This change fixes an existing bug compiler:optimizer Optimization passes (mostly in base/compiler/ssair/) status:merge me PR is reviewed. Merge when all tests are passing backport 1.10 Change should be backported to the 1.10 release labels Jul 13, 2023
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The package evaluation job you requested has completed - possible new issues were detected.
The full report is available.

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maleadt commented Jul 13, 2023

PkgEval failures are #50451, so this LGTM.

@maleadt maleadt merged commit cdec4c2 into JuliaLang:master Jul 13, 2023
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KristofferC pushed a commit that referenced this pull request Jul 17, 2023
In the presence of `attach_after` insertions, we have to be careful to
extend the basic block to include everything up to the last insertion.
We were accounting for "new" nodes (before the compaction point), but
not "pending" nodes (after the compaction point).

Fixes #50379.

(cherry picked from commit cdec4c2)
KristofferC added a commit that referenced this pull request Jul 24, 2023
Backported PRs:
- [x] #50411 <!-- Fix weird dispatch of * with zero arguments -->
- [x] #50202 <!-- Remove dynamic dispatch from _wait/wait2 -->
- [x] #50064 <!-- Fix numbered prompt with input only with comment -->
- [x] #50026 <!-- Store heapsnapshot files in tempdir() instead of
current directory -->
- [x] #50402 <!-- Add CPU feature helper function -->
- [x] #50387 <!-- update newpages pointer after actually sweeping pages
-->
- [x] #50424 <!-- avoid potential type-instability in _replace_(str,
...) -->
- [x] #50444 <!-- Optimize getfield lowering to avoid boxing in some
cases -->
- [x] #50474 <!-- docs: Fix a `!!! note` which was miscapitalized -->
- [x] #50466 <!-- relax assertion involving pg->nold to reflect that it
may be a bit in… -->
- [x] #50490 <!-- Fix compat annotation for italic printstyled -->
- [x] #50488 <!-- fix typo in `Base.isassigned` with `Tridiagonal` -->
- [x] #50476 <!-- Profile: Add specifying dir for `take_heap_snapshot`
and handling if current dir is unwritable -->
- [x] #50461 <!-- fix typo in the --gcthreads argument description -->
- [x] #50528 <!-- ssair: Correctly handle stmt insertion at end of basic
block -->
- [x] #50533 <!-- ensure internal_obj_base_ptr checks whether objects
past freelist pointer are in freelist -->
- [x] #49322 <!-- improve cat design / performance -->
- [x] #50540 <!-- gc: remove over-eager assertion -->
- [x] #50542 <!-- gf: remove unnecessary assert cycle==depth -->
- [x] #50559 <!-- Expand kwcall lowering positional default check to
vararg -->
- [x] #50058 <!-- Add unwrapping mechanism for triangular mul and solves
-->
- [x] #50551 <!-- typeintersect: also record chained `innervars` -->
- [x] #50552 <!-- read(io, Char): fix read with too many leading ones
-->
- [x] #50541 <!-- precompile: ensure globals are not accidentally
created where disallowed -->
- [x] #50576 <!-- use atomic compare exchange when setting the GC
mark-bit -->
- [x] #50578 <!-- gf: make method overwrite/delete an error during
precompile -->
- [x] #50516 <!-- Fix visibility of assert on GCC12/13 -->
- [x] #50597 <!-- Fix memory corruption if task is launched inside
finalizer -->
- [x] #50591 <!-- build: fix various makefile bugs -->
- [x] #50599 <!-- faster invalid object lookup in conservative gc -->
- [x] #50634 <!-- 🤖 [master] Bump the SparseArrays stdlib from b4b0e72
to 99c99b4 -->
- [x] #50639 <!-- Backport LLVM patches to fix various issues. -->
- [x] #50546 <!-- Revert storage of method instance in LineInfoNode -->
- [x] #50631 <!-- Shift DCE pass to optimize imaging mode code better
-->
- [x] #50525 <!-- only check that values are finite in `generic_lufact`
when `check=true` -->
- [x] #50587 <!-- isassigned for ranges with BigInt indices -->
- [x] #50144 <!-- Page based heap size heuristics -->


Need manual backport:
- [ ] #50595 <!-- Rename ENV variable `JULIA_USE_NEW_PARSER` ->
`JULIA_USE_FLISP_PARSER` -->



Non-merged PRs with backport label:
- [ ] #50637 <!-- Remove SparseArrays legacy code -->
- [ ] #50618 <!-- inference: continue const-prop' when concrete-eval
returns non-inlineable -->
- [ ] #50598 <!-- only limit types in stack traces in the REPL -->
- [ ] #50594 <!-- Disallow non-index Integer types in isassigned -->
- [ ] #50568 <!-- `Array(::AbstractRange)` should return an `Array` -->
- [ ] #50523 <!-- Avoid generic call in most cases for getproperty -->
- [ ] #50172 <!-- print feature flags used for matching pkgimage -->
@KristofferC KristofferC removed the backport 1.10 Change should be backported to the 1.10 release label Jul 24, 2023
@brenhinkeller brenhinkeller removed the status:merge me PR is reviewed. Merge when all tests are passing label Aug 8, 2023
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