[llvm] [VPlan] Extend tryToFoldLiveIns to fold binary intrinsics (PR #161703)

Fri Oct 24 03:53:55 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-quick` running on `linaro-clang-aarch64-quick` while building `llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/65/builds/24471

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'Clangd Unit Tests :: ./ClangdTests/290/335' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests-Clangd Unit Tests-2231686-290-335.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=335 GTEST_SHARD_INDEX=290 /home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests
--

Note: This is test shard 291 of 335.
[==========] Running 4 tests from 4 test suites.
[----------] Global test environment set-up.
[----------] 1 test from BuildCompilerInvocation
[ RUN      ] BuildCompilerInvocation.EmptyArgs
[       OK ] BuildCompilerInvocation.EmptyArgs (1 ms)
[----------] 1 test from BuildCompilerInvocation (1 ms total)

[----------] 1 test from HeaderSourceSwitchTest
[ RUN      ] HeaderSourceSwitchTest.ClangdServerIntegration
ASTWorker building file /clangd-test/src/lib/test.cpp version null with command 
[/clangd-test/src/lib]
clang -I/clangd-test/src/include /clangd-test/src/lib/test.cpp
Driver produced command: cc1 -cc1 -triple aarch64-unknown-linux-gnu -fsyntax-only -disable-free -clear-ast-before-backend -main-file-name test.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=non-leaf -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -enable-tlsdesc -target-cpu generic -target-feature +v8a -target-feature +fp-armv8 -target-feature +neon -target-abi aapcs -debugger-tuning=gdb -fdebug-compilation-dir=/clangd-test/src/lib -fcoverage-compilation-dir=/clangd-test/src/lib -resource-dir lib/clang/22 -I /clangd-test/src/include -internal-isystem lib/clang/22/include -internal-isystem /usr/local/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -ferror-limit 19 -fno-signed-char -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -no-round-trip-args -target-feature -fmv -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x c++ /clangd-test/src/lib/test.cpp
Building first preamble for /clangd-test/src/lib/test.cpp version null
Built preamble of size 820676 for file /clangd-test/src/lib/test.cpp version null in 0.39 seconds
indexed preamble AST for /clangd-test/src/lib/test.cpp version null:
  symbol slab: 1 symbols, 4448 bytes
  ref slab: 0 symbols, 0 refs, 128 bytes
  relations slab: 0 relations, 24 bytes
Build dynamic index for header symbols with estimated memory usage of 6956 bytes
not idle after addDocument
UNREACHABLE executed at ../llvm/clang-tools-extra/clangd/unittests/SyncAPI.cpp:22!
 #0 0x0000b11a43f06234 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd06234)
 #1 0x0000b11a43f03d24 llvm::sys::RunSignalHandlers() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd03d24)
 #2 0x0000b11a43f07074 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #3 0x0000ef37878228f8 (linux-vdso.so.1+0x8f8)
 #4 0x0000ef3787342008 __pthread_kill_implementation ./nptl/./nptl/pthread_kill.c:44:76
 #5 0x0000ef37872fa83c gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #6 0x0000ef37872e7134 abort ./stdlib/./stdlib/abort.c:81:7
 #7 0x0000b11a43eb22e8 llvm::RTTIRoot::anchor() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xcb22e8)
 #8 0x0000b11a43d48f34 clang::clangd::runCodeComplete(clang::clangd::ClangdServer&, llvm::StringRef, clang::clangd::Position, clang::clangd::CodeCompleteOptions) (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xb48f34)
 #9 0x0000b11a43b1caf8 clang::clangd::(anonymous namespace)::HeaderSourceSwitchTest_ClangdServerIntegration_Test::TestBody() HeaderSourceSwitchTests.cpp:0:0
#10 0x0000b11a43f6082c testing::Test::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd6082c)
#11 0x0000b11a43f61b3c testing::TestInfo::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd61b3c)
#12 0x0000b11a43f62704 testing::TestSuite::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd62704)
#13 0x0000b11a43f7344c testing::internal::UnitTestImpl::RunAllTests() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd7344c)
#14 0x0000b11a43f72db8 testing::UnitTest::Run() (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd72db8)
#15 0x0000b11a43f4cc18 main (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0xd4cc18)
#16 0x0000ef37872e7400 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#17 0x0000ef37872e74d8 call_init ./csu/../csu/libc-start.c:128:20
#18 0x0000ef37872e74d8 __libc_start_main ./csu/../csu/libc-start.c:379:5
#19 0x0000b11a43693df0 _start (/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests+0x493df0)

...

```

</details>

https://github.com/llvm/llvm-project/pull/161703