[llvm] [SandboxIR] Add more Instruction member functions (PR #98588)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-sles-build-only` running on `rocm-worker-hw-04-sles` while building `llvm` at step 8 "Add check check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/140/builds/2238

Here is the relevant piece of the build log for the reference:
```
Step 8 (Add check check-llvm) failure: test (failure)
******************** TEST 'LLVM-Unit :: SandboxIR/./SandboxIRTests/7/8' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests-LLVM-Unit-1251877-7-8.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=8 GTEST_SHARD_INDEX=7 /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests
--

Note: This is test shard 8 of 8.
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from SandboxIRTest
[ RUN      ] SandboxIRTest.Instruction
 #0 0x000000000061bdf8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x61bdf8)
 #1 0x00000000006198fc SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f5b1e456910 __restore_rt (/lib64/libpthread.so.0+0x16910)
 #3 0x0000000000507b0d llvm::DbgMarker::removeMarker() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x507b0d)
 #4 0x00000000005229de llvm::Instruction::eraseFromParent() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x5229de)
 #5 0x000000000047c04c llvm::sandboxir::Instruction::eraseFromParent() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x47c04c)
 #6 0x000000000041b6a8 SandboxIRTest_Instruction_Test::TestBody() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x41b6a8)
 #7 0x000000000062c998 testing::Test::Run() (.part.1013) gtest-all.cc:0:0
 #8 0x00000000006383e2 testing::TestInfo::Run() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x6383e2)
 #9 0x0000000000640037 testing::TestSuite::Run() (.part.1016) gtest-all.cc:0:0
#10 0x0000000000640add testing::internal::UnitTestImpl::RunAllTests() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x640add)
#11 0x0000000000640f81 testing::UnitTest::Run() (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x640f81)
#12 0x0000000000411555 main (/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests+0x411555)
#13 0x00007f5b1dd6f24d __libc_start_main (/lib64/libc.so.6+0x3524d)
#14 0x0000000000411dea _start /home/abuild/rpmbuild/BUILD/glibc-2.31/csu/../sysdeps/x86_64/start.S:122:0

--
exit: -7
--
shard JSON output does not exist: /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.build/unittests/SandboxIR/./SandboxIRTests-LLVM-Unit-1251877-7-8.json
********************


```

https://github.com/llvm/llvm-project/pull/98588