[llvm] [AMDGPU] Fix eliminateFrameIndex assertion when reusing the frame register. (PR #215182)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `libc-x86_64-debian-dbg-bootstrap-build` running on `libc-x86_64-debian` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/200/builds/35207

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/libc-linux.py ...' (failure)
...
-- Skipping test for 'libc.src.string.memset_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.strings.bcmp_x86_64_opt_avx512' insufficient host cpu features 'AVX512BW'
-- Skipping test for 'libc.src.strings.bzero_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Configuring done
-- Generating done
-- Build files have been written to: /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins
[4/5] cd /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins && /usr/bin/cmake --build /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins/ --target check-libc --config Debug
[0/1] Running libc tests via lit
-- Testing: 3818 tests, 32 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/__support/OSUtil/linux/libc.test.src.__support.OSUtil.linux.sysinfo_test.__build__ (383 of 3818)
******************** TEST 'libc :: src/__support/OSUtil/linux/libc.test.src.__support.OSUtil.linux.sysinfo_test.__build__' FAILED ********************
[==========] Running 4 tests from 1 test suite.
[ RUN      ] LlvmLibcOSUtilSysinfoTest.PossibleCpuCountSmokeTest
[       OK ] LlvmLibcOSUtilSysinfoTest.PossibleCpuCountSmokeTest (53 us)
[ RUN      ] LlvmLibcOSUtilSysinfoTest.OnlineCpuCountSmokeTest
[       OK ] LlvmLibcOSUtilSysinfoTest.OnlineCpuCountSmokeTest (27 us)
[ RUN      ] LlvmLibcOSUtilSysinfoTest.SyntheticCpuLists
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/llvm-project/libc/test/src/__support/OSUtil/linux/sysinfo_test.cpp:76: FAILURE
      Expected: static_cast<bool>(parsed)
      Which is: 0
To be equal to: static_cast<bool>(test_case.expected)
      Which is: 1
[  FAILED  ] LlvmLibcOSUtilSysinfoTest.SyntheticCpuLists
[ RUN      ] LlvmLibcOSUtilSysinfoTest.NonexistentPath
[       OK ] LlvmLibcOSUtilSysinfoTest.NonexistentPath (17 us)
Ran 4 tests.  PASS: 3  FAIL: 1

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__unit__.__build__ (422 of 3818)
******************** TEST 'libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__unit__.__build__' FAILED ********************
[==========] Running 3 tests from 1 test suite.
[ RUN      ] LlvmLibcUniStd.PWriteAndPReadBackTest
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/llvm-project/libc/test/src/unistd/pread_pwrite_test.cpp:60: FAILURE
      Expected: read_buf
      Which is: lo
To be equal to: HELLO
      Which is: hello
[  FAILED  ] LlvmLibcUniStd.PWriteAndPReadBackTest
[ RUN      ] LlvmLibcUniStd.PWriteFails
[       OK ] LlvmLibcUniStd.PWriteFails (3 us)
[ RUN      ] LlvmLibcUniStd.PReadFails
[       OK ] LlvmLibcUniStd.PReadFails (2 us)
Ran 3 tests.  PASS: 2  FAIL: 1

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__build__ (430 of 3818)
Step 7 (check-libc) failure: check-libc (failure)
...
-- Skipping test for 'libc.src.string.memset_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Skipping test for 'libc.src.strings.bcmp_x86_64_opt_avx512' insufficient host cpu features 'AVX512BW'
-- Skipping test for 'libc.src.strings.bzero_x86_64_opt_avx512' insufficient host cpu features 'AVX512F'
-- Configuring done
-- Generating done
-- Build files have been written to: /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins
[4/5] cd /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins && /usr/bin/cmake --build /home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/build/runtimes/runtimes-bins/ --target check-libc --config Debug
[0/1] Running libc tests via lit
-- Testing: 3818 tests, 32 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/__support/OSUtil/linux/libc.test.src.__support.OSUtil.linux.sysinfo_test.__build__ (383 of 3818)
******************** TEST 'libc :: src/__support/OSUtil/linux/libc.test.src.__support.OSUtil.linux.sysinfo_test.__build__' FAILED ********************
[==========] Running 4 tests from 1 test suite.
[ RUN      ] LlvmLibcOSUtilSysinfoTest.PossibleCpuCountSmokeTest
[       OK ] LlvmLibcOSUtilSysinfoTest.PossibleCpuCountSmokeTest (53 us)
[ RUN      ] LlvmLibcOSUtilSysinfoTest.OnlineCpuCountSmokeTest
[       OK ] LlvmLibcOSUtilSysinfoTest.OnlineCpuCountSmokeTest (27 us)
[ RUN      ] LlvmLibcOSUtilSysinfoTest.SyntheticCpuLists
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/llvm-project/libc/test/src/__support/OSUtil/linux/sysinfo_test.cpp:76: FAILURE
      Expected: static_cast<bool>(parsed)
      Which is: 0
To be equal to: static_cast<bool>(test_case.expected)
      Which is: 1
[  FAILED  ] LlvmLibcOSUtilSysinfoTest.SyntheticCpuLists
[ RUN      ] LlvmLibcOSUtilSysinfoTest.NonexistentPath
[       OK ] LlvmLibcOSUtilSysinfoTest.NonexistentPath (17 us)
Ran 4 tests.  PASS: 3  FAIL: 1

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__unit__.__build__ (422 of 3818)
******************** TEST 'libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__unit__.__build__' FAILED ********************
[==========] Running 3 tests from 1 test suite.
[ RUN      ] LlvmLibcUniStd.PWriteAndPReadBackTest
/home/llvm-libc-buildbot/buildbot-worker/libc-x86_64-debian/libc-x86_64-debian-dbg-bootstrap-build/llvm-project/libc/test/src/unistd/pread_pwrite_test.cpp:60: FAILURE
      Expected: read_buf
      Which is: lo
To be equal to: HELLO
      Which is: hello
[  FAILED  ] LlvmLibcUniStd.PWriteAndPReadBackTest
[ RUN      ] LlvmLibcUniStd.PWriteFails
[       OK ] LlvmLibcUniStd.PWriteFails (3 us)
[ RUN      ] LlvmLibcUniStd.PReadFails
[       OK ] LlvmLibcUniStd.PReadFails (2 us)
Ran 3 tests.  PASS: 2  FAIL: 1

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 
FAIL: libc :: src/unistd/libc.test.src.unistd.pread_pwrite_test.__build__ (430 of 3818)

```

</details>

https://github.com/llvm/llvm-project/pull/215182