[llvm] [PGO] Add llvm.loop.estimated_trip_count metadata (PR #152775)

Thu Sep 11 13:23:47 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `cross-project-tests-sie-ubuntu` running on `doug-worker-1a` while building `llvm` at step 6 "test-build-unified-tree-check-cross-project".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/181/builds/27713

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

```
Step 6 (test-build-unified-tree-check-cross-project) failure: test (failure)
******************** TEST 'cross-project-tests :: debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
clang++ -O0 -glldb -std=gnu++11 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp -o /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/Output/dex-continue.cpp.tmp # RUN: at line 11
+ clang++ -O0 -glldb -std=gnu++11 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp -o /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/Output/dex-continue.cpp.tmp
"/usr/bin/python3.8" "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/dexter.py" test --fail-lt 1.0 -w -v --debugger lldb-dap --lldb-executable "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/lldb-dap" -v --binary /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/Output/dex-continue.cpp.tmp -- /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp 2>&1 | /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp # RUN: at line 12
+ /usr/bin/python3.8 /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/dexter.py test --fail-lt 1.0 -w -v --debugger lldb-dap --lldb-executable /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/lldb-dap -v --binary /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/projects/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/Output/dex-continue.cpp.tmp -- /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp
+ /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/FileCheck /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp
[1m/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp:55:16: [0m[0;1;31merror: [0m[1mCHECK-NEXT: expected string not found in input
[0m// CHECK-NEXT: . [0, "a(int)", "{{.*}}dex-continue.cpp", 31, 3, "StopReason.BREAKPOINT", "StepKind.FUNC", []]
[0;1;32m               ^
[0m[1m<stdin>:16:12: [0m[0;1;30mnote: [0m[1mscanning from here
[0m## BEGIN ##
[0;1;32m           ^
[0m[1m<stdin>:20:150: [0m[0;1;30mnote: [0m[1mpossible intended match here
[0m. . . [3, "c(int)", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp", 16, 3, "StopReason.BREAKPOINT", "StepKind.FUNC", []]
[0;1;32m                                                                                                                                                     ^
[0m
Input file: <stdin>
Check file: /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp

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

Input was:
<<<<<<
[1m[0m[0;1;30m           1: [0m[1m[0;1;46mnote: Opening DAP server: /home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/build/bin/lldb-dap [0m
[0;1;30m           2: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: $__lldb_version [0m
[0;1;30m           3: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: completionTriggerCharacters [0m
[0;1;30m           4: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: exceptionBreakpointFilters [0m
[0;1;30m           5: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportTerminateDebuggee [0m
[0;1;30m           6: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsBreakpointLocationsRequest [0m
[0;1;30m           7: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsCompletionsRequest [0m
[0;1;30m           8: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsDelayedStackTraceLoading [0m
[0;1;30m           9: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsExceptionFilterOptions [0m
[0;1;30m          10: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsExceptionInfoRequest [0m
[0;1;30m          11: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: supportsModuleSymbolsRequest [0m
[0;1;30m          12: [0m[1m[0;1;46mwarning: DAP: Unknown support flag: capabilities [0m
[0;1;30m          13: [0m[1m[0;1;46mnote: Successfully disconnected from DAP server. [0m
[0;1;30m          14: [0m[1m[0;1;46mdex-continue.cpp: (nan) [0m
[0;1;30m          15: [0m[1m[0;1;46m [0m
[0;1;30m          16: [0m[1m[0;1;46m[0m## BEGIN ##[0;1;46m [0m
[0;1;32mcheck:54      ^~~~~~~~~~~
[0m[0;1;31mnext:55'0                X error: no match found
[0m[0;1;30m          17: [0m[1m[0;1;46m. [0, "__GI__dl_debug_state", "/build/glibc-B3wQXB/glibc-2.31/elf/dl-debug.c", 73, 1, "StopReason.BREAKPOINT", "StepKind.FUNC_UNKNOWN", []] [0m
[0;1;31mnext:55'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m          18: [0m[1m[0;1;46m. [1, "a(int)", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp", 31, 3, "StopReason.STEP", "StepKind.VERTICAL_BACKWARD", []] [0m
[0;1;31mnext:55'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m          19: [0m[1m[0;1;46m. [2, "a(int)", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu/llvm-project/cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/control/dex-continue.cpp", 32, 5, "StopReason.STEP", "StepKind.VERTICAL_FORWARD", []] [0m
...

```

</details>

https://github.com/llvm/llvm-project/pull/152775