[clang] [clang][CodeGen] Remove redundant bitcast(NFC) (PR #173809)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-ppc64le-linux` running on `ppc64le-sanitizer` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/72/builds/16794

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

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure) (timed out)
...
[108/114] Generating MSAN_INST_GTEST.gtest-all.cc.powerpc64le-with-call.o
[109/114] Generating MSAN_INST_GTEST.gtest-all.cc.powerpc64le.o
[110/114] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.powerpc64le-with-call.o
[111/114] Generating Msan-powerpc64le-with-call-Test
[112/114] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.powerpc64le.o
[113/114] Generating Msan-powerpc64le-Test
[113/114] Running compiler_rt regression tests
-- Testing: 5293 tests, 1152 workers --
llvm-lit: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/llvm/utils/lit/lit/discovery.py:273: warning: input '/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/test/interception/Unit' contained no tests
llvm-lit: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/llvm/utils/lit/lit/discovery.py:273: warning: input '/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/test/sanitizer_common/Unit' contained no tests
command timed out: 1800 seconds without output running [b'python', b'../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=12715.953506
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
Step 14 (test standalone compiler-rt) failure: test standalone compiler-rt (failure)
...
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/unordered_map.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/unordered_set.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/utility.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/valarray.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/variant.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/vector.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/version.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cassert.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cctype.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cerrno.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cfenv.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cfloat.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cinttypes.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/climits.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/clocale.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cmath.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/csetjmp.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/csignal.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdarg.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstddef.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdint.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdio.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdlib.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstring.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/ctime.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cuchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwctype.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/lib/libc++.modules.json
[104/114] Generating libmsan_loadable.powerpc64le-with-call.so
[106/114] Generating MSAN_INST_TEST_OBJECTS.msan_test_main.cpp.powerpc64le.o
[107/114] Generating MSAN_INST_TEST_OBJECTS.msan_test_main.cpp.powerpc64le-with-call.o
[108/114] Generating MSAN_INST_GTEST.gtest-all.cc.powerpc64le-with-call.o
[109/114] Generating MSAN_INST_GTEST.gtest-all.cc.powerpc64le.o
[110/114] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.powerpc64le-with-call.o
[111/114] Generating Msan-powerpc64le-with-call-Test
[112/114] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.powerpc64le.o
[113/114] Generating Msan-powerpc64le-Test
[113/114] Running compiler_rt regression tests
-- Testing: 5293 tests, 1152 workers --
llvm-lit: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/llvm/utils/lit/lit/discovery.py:273: warning: input '/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/test/interception/Unit' contained no tests
llvm-lit: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/llvm-project/llvm/utils/lit/lit/discovery.py:273: warning: input '/home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/test/sanitizer_common/Unit' contained no tests

command timed out: 1800 seconds without output running [b'python', b'../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=12715.953506
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90

```

</details>

https://github.com/llvm/llvm-project/pull/173809