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Poison address-exposed user variables in debug #54685

Merged
merged 12 commits into from
Jul 1, 2021
Merged

Poison address-exposed user variables in debug #54685

merged 12 commits into from
Jul 1, 2021

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jakobbotsch
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Fix #13072

@dotnet-issue-labeler dotnet-issue-labeler bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jun 24, 2021
@jakobbotsch jakobbotsch changed the title Poison debug variables Poison address-exposed user variables in debug Jun 24, 2021
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@sandreenko I hope I have addressed what we talked about some weeks ago.

  1. Now we only poison address exposed user locals
  2. The poison code is emitted in a scratch BB right after the prolog
  3. It's implemented for ARM/ARM64 as well

PTAL

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cc @dotnet/jit-contrib

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jakobbotsch commented Jun 24, 2021 •
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I want to run local tests first before I do some more testing in CI, not sure that this is quite ready yet.

sandreenko
sandreenko reviewed Jun 24, 2021
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LGTM, this is an elegant solution, a few nits/questions.

src/coreclr/jit/compiler.h Outdated Show resolved Hide resolved
src/coreclr/jit/flowgraph.cpp Show resolved Hide resolved
src/libraries/System.Private.CoreLib/src/System/Decimal.DecCalc.cs Show resolved Hide resolved
src/coreclr/jit/codegencommon.cpp Show resolved Hide resolved
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@runfoapp runfoapp bot mentioned this pull request Jun 25, 2021
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/azp run runtime

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@jakobbotsch jakobbotsch marked this pull request as ready for review June 28, 2021 23:09
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This should be ready for review. I believe the failing tests are #54778.
To make sure we do not allocate things to the scratch register being used for the immediate I have added a kill in register allocation when we see the scratch BB and know that we will emit poisoning. @kunalspathak can you take a look at this part?

cc @dotnet/jit-contrib

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kunalspathak reviewed Jun 29, 2021
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Could you also include a test for this?

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jakobbotsch and others added 3 commits June 29, 2021 20:25
@jakobbotsch
Add a test
3d9fd8c
@jakobbotsch @kunalspathak
Rephrase comment
8c56578 
Co-authored-by: Kunal Pathak <Kunal.Pathak@microsoft.com>
@jakobbotsch
Disable poisoning test on mono
302bfba
kunalspathak
kunalspathak approved these changes Jun 29, 2021
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LGTM

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jakobbotsch commented Jul 1, 2021 •
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I added a test. Failing tests are #54778 and some Mono failures (looks like https://github.com/dotnet/runtime/issues/53329#issuecomment-871039590). I'll wait for @echesakovMSFT review before merging.

sandreenko
sandreenko approved these changes Jul 1, 2021
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LGTM

echesakov
echesakov approved these changes Jul 1, 2021
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LGTM

@jakobbotsch jakobbotsch merged commit b8beed2 into dotnet:main Jul 1, 2021
@jakobbotsch jakobbotsch deleted the poison-debug-variables branch July 1, 2021 19:39
@sandreenko sandreenko mentioned this pull request Jul 2, 2021
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thaystg added a commit to thaystg/runtime that referenced this pull request Jul 2, 2021
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Merge remote-tracking branch 'origin/main' into thays_hot_reload_debug
946c391 
* origin/main: (27 commits)
  [mono][llvm] Only emit 'LLVM failed' messages on verbosity > 0. (dotnet#55060)
  Http2Stream throws a wrapped Http2ConnectionException on GO_AWAY (dotnet#54625)
  [main] Update dependencies from dnceng/internal/dotnet-optimization dotnet/arcade dotnet/xharness dotnet/hotreload-utils (dotnet#55007)
  disable a failing test. (dotnet#55063)
  [mono][wasm] Disable some tests which crash on AOT. (dotnet#55054)
  Fix fix_allocation_context for regions (dotnet#54931)
  Delete stale references to System.IO.FileSystem.Primitives (dotnet#55041)
  Add binplaced analyzers to ASP.NET transport package (dotnet#55042)
  [mono] Enable many HardwareIntrinsic tests on wasm
  Delete `compQuirkForPPP`. (dotnet#55050)
  [Mono] Condition Workload AOT import to be osx only (dotnet#55040)
  package native quic library (dotnet#54992)
  Make GlobalizationMode code consistent (dotnet#55039)
  Expand PerfMap format to support metadata for symbol indexation (dotnet#53792)
  [debugger]Componentize debugger (dotnet#54887)
  [Mono] Include loaded interpreter methods as EventPipe session rundown method events. (dotnet#54953)
  Delete stale ActiveIssue from HttpHeadersTest (dotnet#55027)
  Poison address-exposed user variables in debug (dotnet#54685)
  Recategorize emsdk dependency (dotnet#55028)
  Remove the the wasm AOT specific test project exclusions (dotnet#54988)
  ...
@karelz karelz mentioned this pull request Jul 28, 2021
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@sandreenko sandreenko sandreenko approved these changes

@kunalspathak kunalspathak kunalspathak approved these changes

@echesakov echesakov echesakov approved these changes

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Fill uninitialized address-taken locals with poison pattern in debug codegen
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@jakobbotsch @sandreenko @echesakov @kunalspathak