[llvm] [MachinePipeliner] Add an abstract layer to manipulate Data Dependenc… (PR #109918)

Mon Dec 23 17:23:15 PST 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu` running on `sie-linux-worker3` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/10572

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llvm-mc -triple=x86_64-apple-macosx10.9 -filetype=obj -o /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/test/ExecutionEngine/JITLink/x86-64/Output/LocalDependencyPropagation.s.tmp /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llvm-mc -triple=x86_64-apple-macosx10.9 -filetype=obj -o /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/test/ExecutionEngine/JITLink/x86-64/Output/LocalDependencyPropagation.s.tmp /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s
RUN: at line 3: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llvm-jitlink -debug-only=orc -noexec -abs _external_func=0x1    -entry=_foo /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/test/ExecutionEngine/JITLink/x86-64/Output/LocalDependencyPropagation.s.tmp 2>&1 | /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/llvm-jitlink -debug-only=orc -noexec -abs _external_func=0x1 -entry=_foo /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/test/ExecutionEngine/JITLink/x86-64/Output/LocalDependencyPropagation.s.tmp
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s
[1m/home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s:13:10: [0m[0;1;31merror: [0m[1mCHECK: expected string not found in input
[0m# CHECK: In main emitting {{.*}}_foo{{.*}}
[0;1;32m         ^
[0m[1m<stdin>:1:1: [0m[0;1;30mnote: [0m[1mscanning from here
[0mDefining MU <Absolute Symbols> for main (tracker: 0x0, default will be used)
[0;1;32m^
[0m[1m<stdin>:38:1: [0m[0;1;30mnote: [0m[1mpossible intended match here
[0mIn main defining materializing symbols { }
[0;1;32m^
[0m
Input file: <stdin>
Check file: /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/LocalDependencyPropagation.s

-dump-input=help explains the following input dump.

Input was:
<<<<<<
[1m[0m[0;1;30m            1: [0m[1m[0;1;46mDefining MU <Absolute Symbols> for main (tracker: 0x0, default will be used) [0m
[0;1;31mcheck:13'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
[0m[0;1;30m            2: [0m[1m[0;1;46m { ("_external_func", [Data]) } [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            3: [0m[1m[0;1;46mDefining MU /home/buildbot/buildbot-root/llvm-clang-x86_64-gcc-ubuntu/build/test/ExecutionEngine/JITLink/x86-64/Output/LocalDependencyPropagation.s.tmp for main (tracker: default) { ("_baz", [Callable]), ("_foo", [Callable]) } [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            4: [0m[1m[0;1;46mLooking up { (_foo, RequiredSymbol) } in [ ("main", MatchAllSymbols), ("Process", MatchExportedSymbolsOnly) ] (required state: Ready) [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            5: [0m[1m[0;1;46mDispatching MaterializationUnits... [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            6: [0m[1m[0;1;46mDone dispatching MaterializationUnits. [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            7: [0m[1m[0;1;46mEntering OL_applyQueryPhase1: [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            8: [0m[1m[0;1;46m Lookup kind: Static [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m            9: [0m[1m[0;1;46m Search order: [ ("main", MatchAllSymbols), ("Process", MatchExportedSymbolsOnly) ], Current index = 0 (entering new JITDylib) [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           10: [0m[1m[0;1;46m Lookup set: { (_foo, RequiredSymbol) } [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           11: [0m[1m[0;1;46m Definition generator candidates: { (_foo, RequiredSymbol) } [0m
[0;1;31mcheck:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           12: [0m[1m[0;1;46m Definition generator non-candidates: { } [0m
...

```

</details>

https://github.com/llvm/llvm-project/pull/109918