[llvm] [IVDescriptors] Remove function FMF attribute check for FP min/max reduction (PR #183523)

Mon Mar 2 01:14:02 PST 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux` running on `sanitizer-buildbot1` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/66/builds/27202

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

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:255: warning: COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=ON, but this test suite does not support testing the just-built runtime libraries when the test compiler is configured to use different runtime libraries. Either modify this test suite to support this test configuration, or set COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=OFF to test the runtime libraries included in the compiler instead.
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:266: note: Testing using libraries in "/home/b/sanitizer-x86_64-linux/build/build_default/./lib/../lib/clang/23/lib/i386-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:244: warning: Compiler lib dir != compiler-rt lib dir
Compiler libdir:     "/home/b/sanitizer-x86_64-linux/build/build_default/lib/clang/23/lib/i386-unknown-linux-gnu"
compiler-rt libdir:  "/home/b/sanitizer-x86_64-linux/build/build_default/lib/clang/23/lib/x86_64-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:255: warning: COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=ON, but this test suite does not support testing the just-built runtime libraries when the test compiler is configured to use different runtime libraries. Either modify this test suite to support this test configuration, or set COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=OFF to test the runtime libraries included in the compiler instead.
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:266: note: Testing using libraries in "/home/b/sanitizer-x86_64-linux/build/build_default/./lib/../lib/clang/23/lib/x86_64-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 5397 of 11420 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80..
FAIL: ThreadSanitizer-x86_64 :: bench_threads.cpp (4751 of 5397)
******************** TEST 'ThreadSanitizer-x86_64 :: bench_threads.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/home/b/sanitizer-x86_64-linux/build/build_default/./bin/clang  --driver-mode=g++ -fsanitize=thread -Wall  -m64  -msse4.2   -gline-tables-only -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_x86_64/include/c++/v1 /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp -o /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# executed command: /home/b/sanitizer-x86_64-linux/build/build_default/./bin/clang --driver-mode=g++ -fsanitize=thread -Wall -m64 -msse4.2 -gline-tables-only -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_x86_64/include/c++/v1 /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp -o /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp 2>&1 | FileCheck /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# executed command: /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# note: command had no output on stdout or stderr
# error: command failed with exit status: 66
# executed command: FileCheck /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# .---command stderr------------
# | /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp:45:11: error: CHECK: expected string not found in input
# | // CHECK: DONE
# |           ^
# | <stdin>:1:1: note: scanning from here
# | ThreadSanitizer: CHECK failed: tsan_platform.h:992 "((IsAppMemImpl::Apply<Mapping>(x))) != (0)" (0x0, 0x0) (tid=3046080)
# | ^
# | <stdin>:7:13: note: possible intended match here
# |  #5 __tsan::DontNeedShadowFor(unsigned long, unsigned long) /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/tsan/rtl/tsan_rtl.cpp (bench_threads.cpp.tmp+0xffc9b)
# |             ^
# | 
# | Input file: <stdin>
# | Check file: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             1: ThreadSanitizer: CHECK failed: tsan_platform.h:992 "((IsAppMemImpl::Apply<Mapping>(x))) != (0)" (0x0, 0x0) (tid=3046080) 
# | check:45'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# |             2:  #0 __tsan::CheckUnwind() /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/tsan/rtl/tsan_rtl.cpp:697:21 (bench_threads.cpp.tmp+0x10023f) 
# | check:45'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |             3:  #1 __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:86:5 (bench_threads.cpp.tmp+0x8b562) 
Step 11 (test compiler-rt debug) failure: test compiler-rt debug (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:255: warning: COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=ON, but this test suite does not support testing the just-built runtime libraries when the test compiler is configured to use different runtime libraries. Either modify this test suite to support this test configuration, or set COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=OFF to test the runtime libraries included in the compiler instead.
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:266: note: Testing using libraries in "/home/b/sanitizer-x86_64-linux/build/build_default/./lib/../lib/clang/23/lib/i386-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:244: warning: Compiler lib dir != compiler-rt lib dir
Compiler libdir:     "/home/b/sanitizer-x86_64-linux/build/build_default/lib/clang/23/lib/i386-unknown-linux-gnu"
compiler-rt libdir:  "/home/b/sanitizer-x86_64-linux/build/build_default/lib/clang/23/lib/x86_64-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:255: warning: COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=ON, but this test suite does not support testing the just-built runtime libraries when the test compiler is configured to use different runtime libraries. Either modify this test suite to support this test configuration, or set COMPILER_RT_TEST_STANDALONE_BUILD_LIBS=OFF to test the runtime libraries included in the compiler instead.
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:266: note: Testing using libraries in "/home/b/sanitizer-x86_64-linux/build/build_default/./lib/../lib/clang/23/lib/x86_64-unknown-linux-gnu"
llvm-lit: /home/b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 5397 of 11420 tests, 64 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80..
FAIL: ThreadSanitizer-x86_64 :: bench_threads.cpp (4751 of 5397)
******************** TEST 'ThreadSanitizer-x86_64 :: bench_threads.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/home/b/sanitizer-x86_64-linux/build/build_default/./bin/clang  --driver-mode=g++ -fsanitize=thread -Wall  -m64  -msse4.2   -gline-tables-only -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_x86_64/include/c++/v1 /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp -o /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# executed command: /home/b/sanitizer-x86_64-linux/build/build_default/./bin/clang --driver-mode=g++ -fsanitize=thread -Wall -m64 -msse4.2 -gline-tables-only -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -std=c++11 -I/home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/../ -nostdinc++ -I/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/lib/tsan/libcxx_tsan_x86_64/include/c++/v1 /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp -o /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
/home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp 2>&1 | FileCheck /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# executed command: /home/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/tsan/X86_64Config/Output/bench_threads.cpp.tmp
# note: command had no output on stdout or stderr
# error: command failed with exit status: 66
# executed command: FileCheck /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# .---command stderr------------
# | /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp:45:11: error: CHECK: expected string not found in input
# | // CHECK: DONE
# |           ^
# | <stdin>:1:1: note: scanning from here
# | ThreadSanitizer: CHECK failed: tsan_platform.h:992 "((IsAppMemImpl::Apply<Mapping>(x))) != (0)" (0x0, 0x0) (tid=3046080)
# | ^
# | <stdin>:7:13: note: possible intended match here
# |  #5 __tsan::DontNeedShadowFor(unsigned long, unsigned long) /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/tsan/rtl/tsan_rtl.cpp (bench_threads.cpp.tmp+0xffc9b)
# |             ^
# | 
# | Input file: <stdin>
# | Check file: /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/tsan/bench_threads.cpp
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             1: ThreadSanitizer: CHECK failed: tsan_platform.h:992 "((IsAppMemImpl::Apply<Mapping>(x))) != (0)" (0x0, 0x0) (tid=3046080) 
# | check:45'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# |             2:  #0 __tsan::CheckUnwind() /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/tsan/rtl/tsan_rtl.cpp:697:21 (bench_threads.cpp.tmp+0x10023f) 
# | check:45'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |             3:  #1 __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) /home/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:86:5 (bench_threads.cpp.tmp+0x8b562) 

```

</details>

https://github.com/llvm/llvm-project/pull/183523