[llvm] [InterleavedLoadCombine] Index candidates to avoid quadratic matching (PR #213053)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-armv7-global-isel` running on `linaro-clang-armv7-global-isel` while building `llvm` at step 7 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/39/builds/12194

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

```
Step 7 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'Clangd Unit Tests :: ./ClangdTests/5/23' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests-Clangd Unit Tests-1506700-5-23.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=23 GTEST_SHARD_INDEX=5 /home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests
--

Script:
--
/home/tcwg-buildbot/worker/clang-armv7-global-isel/stage1/tools/clang/tools/extra/clangd/unittests/./ClangdTests --gtest_filter=CompletionTest.DynamicIndexIncludeInsertion
--
ASTWorker building file /clangd-test/foo_impl.cpp version null with command 
[/clangd-test]
clang -ffreestanding /clangd-test/foo_impl.cpp
Driver produced command: cc1 -cc1 -triple armv8a-unknown-linux-gnueabihf -fsyntax-only -disable-free -clear-ast-before-backend -main-file-name foo_impl.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -target-cpu generic -target-feature +read-tp-tpidruro -target-feature +vfp2 -target-feature +vfp2sp -target-feature +vfp3 -target-feature +vfp3d16 -target-feature +vfp3d16sp -target-feature +vfp3sp -target-feature +fp16 -target-feature +vfp4 -target-feature +vfp4d16 -target-feature +vfp4d16sp -target-feature +vfp4sp -target-feature +fp-armv8 -target-feature +fp-armv8d16 -target-feature +fp-armv8d16sp -target-feature +fp-armv8sp -target-feature -fullfp16 -target-feature +fp64 -target-feature +d32 -target-feature +sha2 -target-feature +aes -target-feature -fp16fml -target-feature +neon -target-abi aapcs-linux -mfloat-abi hard -debugger-tuning=gdb -fdebug-compilation-dir=/clangd-test -fcoverage-compilation-dir=/clangd-test -resource-dir lib/clang/24 -internal-isystem lib/clang/24/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 -faddrsig -fdwarf2-cfi-asm -x c++ /clangd-test/foo_impl.cpp
Building first preamble for /clangd-test/foo_impl.cpp version null
Built preamble of size 373816 for file /clangd-test/foo_impl.cpp version null in 7.91 seconds
indexed preamble AST for /clangd-test/foo_impl.cpp version null:
  symbol slab: 2 symbols, 4440 bytes
  ref slab: 0 symbols, 0 refs, 68 bytes
  relations slab: 0 relations, 12 bytes
Build dynamic index for header symbols with estimated memory usage of 6200 bytes
indexed ../llvm/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp:1154: Failure
Value of: Server.blockUntilIdleForTest()
  Actual: false
Expected: true

file AST for /clangd-test/foo_impl.cpp version null:
  symbol slab: 1 symbols, 4300 bytes
  ref slab: 2 symbols, 2 refs, 4196 bytes
  relations slab: 0 relations, 12 bytes
Build dynamic index for main-file symbols with estimated memory usage of 10492 bytes

../llvm/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp:1154
Value of: Server.blockUntilIdleForTest()
  Actual: false
Expected: true



********************


```

</details>

https://github.com/llvm/llvm-project/pull/213053