[clang] [CMake][Fuchsia] Use standard spelling for Arm baremetal targets (PR #101302)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux` running on `sanitizer-buildbot1` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/66/builds/2446

Here is the relevant piece of the build log for the reference:
```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
[374/378] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.x86_64-with-call.o
[375/378] Generating Msan-x86_64-with-call-Test
[376/378] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.x86_64.o
[377/378] Generating Msan-x86_64-Test
[377/378] Running compiler_rt regression tests
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/rtsan/X86_64LinuxConfig' contained no tests
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 10098 tests, 88 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
TIMEOUT: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c (10098 of 10098)
******************** TEST 'SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c' FAILED ********************
Exit Code: -9
Timeout: Reached timeout of 900 seconds

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_default/./bin/clang  -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing  -m64 -funwind-tables  -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp && env HWASAN_OPTIONS=die_after_fork=0  /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ /b/sanitizer-x86_64-linux/build/build_default/./bin/clang -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing -m64 -funwind-tables -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ env HWASAN_OPTIONS=die_after_fork=0 /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
==1455388==ERROR: HWAddressSanitizer: tag-mismatch on address 0x681400005140 at pc 0x597bdcd3a0c7
READ of size 155 at 0x681400005140 tags: 02/00 (ptr/mem) in thread T0

=================================================================
==1454244==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 780 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e31d in calloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:127:3
    #1 0x597bdce0f541 in llvm::safe_calloc(unsigned long, unsigned long) llvm-link

Direct leak of 568 byte(s) in 3 object(s) allocated from:
    #0 0x597bdcd2e7d8 in malloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:151:3
    #1 0x597bdce86c9e in operator new(unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

Direct leak of 204 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e31d in calloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:127:3
    #1 0x597bdce0f541 in llvm::safe_calloc(unsigned long, unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

Indirect leak of 1792 byte(s) in 43 object(s) allocated from:
    #0 0x597bdcd2dcd9 in aligned_alloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:58:3
    #1 0x597bdce1ce2f in llvm::allocate_buffer(unsigned long, unsigned long) llvm-link

Indirect leak of 160 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e7d8 in malloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:151:3
    #1 0x597bdce86c9e in operator new(unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

SUMMARY: HWAddressSanitizer: 3504 byte(s) leaked in 49 allocation(s).
Step 9 (test compiler-rt symbolizer) failure: test compiler-rt symbolizer (failure)
...
[374/378] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.x86_64-with-call.o
[375/378] Generating Msan-x86_64-with-call-Test
[376/378] Generating MSAN_INST_TEST_OBJECTS.msan_test.cpp.x86_64.o
[377/378] Generating Msan-x86_64-Test
[377/378] Running compiler_rt regression tests
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/discovery.py:276: warning: input '/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/rtsan/X86_64LinuxConfig' contained no tests
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 10098 tests, 88 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
TIMEOUT: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c (10098 of 10098)
******************** TEST 'SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c' FAILED ********************
Exit Code: -9
Timeout: Reached timeout of 900 seconds

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_default/./bin/clang  -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing  -m64 -funwind-tables  -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp && env HWASAN_OPTIONS=die_after_fork=0  /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ /b/sanitizer-x86_64-linux/build/build_default/./bin/clang -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing -m64 -funwind-tables -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ env HWASAN_OPTIONS=die_after_fork=0 /b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
==1455388==ERROR: HWAddressSanitizer: tag-mismatch on address 0x681400005140 at pc 0x597bdcd3a0c7
READ of size 155 at 0x681400005140 tags: 02/00 (ptr/mem) in thread T0

=================================================================
==1454244==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 780 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e31d in calloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:127:3
    #1 0x597bdce0f541 in llvm::safe_calloc(unsigned long, unsigned long) llvm-link

Direct leak of 568 byte(s) in 3 object(s) allocated from:
    #0 0x597bdcd2e7d8 in malloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:151:3
    #1 0x597bdce86c9e in operator new(unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

Direct leak of 204 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e31d in calloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:127:3
    #1 0x597bdce0f541 in llvm::safe_calloc(unsigned long, unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

Indirect leak of 1792 byte(s) in 43 object(s) allocated from:
    #0 0x597bdcd2dcd9 in aligned_alloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:58:3
    #1 0x597bdce1ce2f in llvm::allocate_buffer(unsigned long, unsigned long) llvm-link

Indirect leak of 160 byte(s) in 1 object(s) allocated from:
    #0 0x597bdcd2e7d8 in malloc /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/lib/hwasan/hwasan_allocation_functions.cpp:151:3
    #1 0x597bdce86c9e in operator new(unsigned long) llvm-link
    #2 0x597bdcd24c84 in _start (/b/sanitizer-x86_64-linux/build/build_default/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp+0xeec84)

SUMMARY: HWAddressSanitizer: 3504 byte(s) leaked in 49 allocation(s).

```

https://github.com/llvm/llvm-project/pull/101302