[llvm] [InstCombine] When rewriting GEPs, check that the types match. (PR #186886)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-aarch64-ubuntu-clang` running on `bolt-worker-aarch64` while building `llvm` at step 5 "build-clang-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/128/builds/11782

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

```
Step 5 (build-clang-bolt) failure: build (failure)
...
29.753 [7/3/3388] Linking CXX static library lib/libclangExtractAPI.a
30.155 [7/2/3389] Linking CXX static library lib/libclangDriver.a
30.200 [6/2/3390] Linking CXX static library lib/libclangCrossTU.a
30.679 [5/2/3391] Linking CXX static library lib/libclangStaticAnalyzerCore.a
30.720 [4/2/3392] Linking CXX static library lib/libclangCodeGen.a
31.550 [4/1/3393] Linking CXX static library lib/libclangStaticAnalyzerCheckers.a
31.620 [3/1/3394] Linking CXX static library lib/libclangStaticAnalyzerFrontend.a
31.670 [2/1/3395] Linking CXX static library lib/libclangFrontendTool.a
32.504 [1/1/3396] Linking CXX executable bin/clang-23
171.851 [0/1/3397] Creating executable symlink bin/clang
FAILED: bin/clang 
/usr/bin/cmake -E cmake_symlink_executable bin/clang-23 bin/clang && cd /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver && /usr/bin/cmake -E create_symlink clang-23 /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/clang++ && cd /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver && /usr/bin/cmake -E create_symlink clang-23 /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/clang-cl && cd /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver && /usr/bin/cmake -E create_symlink clang-23 /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/clang-cpp && cd /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver && /usr/bin/python3 /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/llvm-project/clang/tools/driver/../../utils/perf-training/perf-helper.py bolt-optimize --method INSTRUMENT --input /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/clang-23 --instrumented-output /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/clang-bolt.inst --fdata /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver/../../utils/perf-training/prof.fdata --perf-training-binary-dir /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver/../../utils/perf-training --readelf /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/llvm-readobj --bolt /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/llvm-bolt --lit /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/llvm-lit --merge-fdata /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/merge-fdata
Running: /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/llvm-bolt /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/bin/clang-23 -o /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/./bin/clang-bolt.inst -instrument --instrumentation-file-append-pid --instrumentation-file=/home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver/../../utils/perf-training/prof.fdata
BOLT-INFO: shared object or position-independent executable detected
BOLT-INFO: Target architecture: aarch64
BOLT-INFO: BOLT version: <unknown>
BOLT-INFO: first alloc address is 0x0
BOLT-INFO: creating new program header table at address 0x8e00000, offset 0x8e00000
BOLT-INFO: enabling relocation mode
BOLT-INFO: forcing -jump-tables=move for instrumentation
BOLT-INFO: PointerAuthCFIAnalyzer ran on 2 functions. Ignored 0 functions (0.00%) because of CFI inconsistencies
BOLT-INFO: number of removed linker-inserted veneers: 0
BOLT-INFO: 0 out of 159163 functions in the binary (0.0%) have non-empty execution profile
BOLT-INSTRUMENTER: Number of indirect call site descriptors: 58440
BOLT-INSTRUMENTER: Number of indirect call target descriptors: 156906
BOLT-INSTRUMENTER: Number of function descriptors: 156893
BOLT-INSTRUMENTER: Number of branch counters: 2040936
BOLT-INSTRUMENTER: Number of ST leaf node counters: 1042338
BOLT-INSTRUMENTER: Number of direct call counters: 0
BOLT-INSTRUMENTER: Total number of counters: 3083274
BOLT-INSTRUMENTER: Total size of counters: 24666192 bytes (static alloc memory)
BOLT-INSTRUMENTER: Total size of string table emitted: 16530738 bytes in file
BOLT-INSTRUMENTER: Total size of descriptors: 228551792 bytes in file
BOLT-INSTRUMENTER: Profile will be saved to file /home/buildbot/workspace/bolt-aarch64-ubuntu-clang/build/tools/clang/tools/driver/../../utils/perf-training/prof.fdata
BOLT-INFO: removed 20632 empty blocks
BOLT-INFO: merged 6 duplicate CFG edges
BOLT-INFO: Starting stub-insertion pass
BOLT-INFO: Inserted 1429 stubs in the hot area and 0 stubs in the cold area. Shared 185667 times, iterated 4 times.
BOLT-INFO: rewritten pac-ret DWARF info in 2 out of 159461 functions (0.00%).
BOLT-INFO: padding code to 0x13600000 to accommodate hot text
BOLT-INFO: output linked against instrumentation runtime library, lib entry point is 0x16308950
BOLT-INFO: clear procedure is 0x16307570
BOLT-INFO: patched build-id (flipped last bit)
BOLT-INFO: setting __bolt_runtime_start to 0x16308950
BOLT-INFO: setting __bolt_runtime_fini to 0x163089f0
BOLT-INFO: setting __hot_start to 0x9000000
BOLT-INFO: setting __hot_end to 0x135de420
BOLT-INFO: runtime library finalization was hooked via DT_FINI, set to 0x163089f0
BOLT-INFO: runtime library initialization was hooked via ELF Header Entry Point, set to 0x16308950

```

</details>

https://github.com/llvm/llvm-project/pull/186886