[llvm] [LLVM][Instrumentation] Add numerical sanitizer (PR #85916)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-a-1` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/822

Here is the relevant piece of the build log for the reference:
```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
[1409/1414] Building CXX object unittests/Transforms/Scalar/CMakeFiles/ScalarTests.dir/LoopPassManagerTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1410/1414] Linking CXX executable unittests/Transforms/Scalar/ScalarTests
[1410/1414] Running the LLVM regression tests
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using ld.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/ld.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using lld-link: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/lld-link
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using ld64.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/ld64.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using wasm-ld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/wasm-ld
-- Testing: 54601 tests, 60 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50
FAIL: LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll (30030 of 54601)
******************** TEST 'LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 2: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -S /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll | /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -S /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
********************
Failed Tests (1):
  LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll


Testing Time: 73.15s

Total Discovered Tests: 60233
  Skipped          :    33 (0.05%)
  Unsupported      : 16416 (27.25%)
  Passed           : 43717 (72.58%)
  Expectedly Failed:    66 (0.11%)
  Failed           :     1 (0.00%)
[1411/1414] Building CXX object tools/clang/unittests/Tooling/CMakeFiles/ToolingTests.dir/SourceCodeTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1412/1414] Linking CXX executable tools/clang/unittests/Tooling/ToolingTests
FAILED: test/CMakeFiles/check-llvm /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test/CMakeFiles/check-llvm 
cd /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test && /usr/bin/python3.10 /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/./bin/llvm-lit -sv /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test
ninja: build stopped: subcommand failed.
['ninja', '-C', '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt', 'check-llvm', 'check-clang', 'check-lld'] exited with return code 1.
@@@STEP_FAILURE@@@
Step 7 (check) failure: check (failure)
...
[1409/1414] Building CXX object unittests/Transforms/Scalar/CMakeFiles/ScalarTests.dir/LoopPassManagerTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1410/1414] Linking CXX executable unittests/Transforms/Scalar/ScalarTests
[1410/1414] Running the LLVM regression tests
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using ld.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/ld.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using lld-link: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/lld-link
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using ld64.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/ld64.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:508: note: using wasm-ld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/wasm-ld
-- Testing: 54601 tests, 60 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50
FAIL: LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll (30030 of 54601)
******************** TEST 'LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 2: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -S /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll | /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -S /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll --check-prefixes=CHECK,DQQ

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
********************
Failed Tests (1):
  LLVM :: Instrumentation/NumericalStabilitySanitizer/basic.ll


Testing Time: 73.15s

Total Discovered Tests: 60233
  Skipped          :    33 (0.05%)
  Unsupported      : 16416 (27.25%)
  Passed           : 43717 (72.58%)
  Expectedly Failed:    66 (0.11%)
  Failed           :     1 (0.00%)
[1411/1414] Building CXX object tools/clang/unittests/Tooling/CMakeFiles/ToolingTests.dir/SourceCodeTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1412/1414] Linking CXX executable tools/clang/unittests/Tooling/ToolingTests
FAILED: test/CMakeFiles/check-llvm /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test/CMakeFiles/check-llvm 
cd /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test && /usr/bin/python3.10 /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/./bin/llvm-lit -sv /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt/test
ninja: build stopped: subcommand failed.
['ninja', '-C', '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-pdinhvtt', 'check-llvm', 'check-clang', 'check-lld'] exited with return code 1.
program finished with exit code 0
elapsedTime=996.481886

```

https://github.com/llvm/llvm-project/pull/85916