[llvm] [NFC] Add comment to describe the intention use of newly added `avail-extern-gv-in-addrspace-to-local` (PR #144911)

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Fri Jun 20 16:10:49 PDT 2025 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-b-1` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/17770

<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/fuchsia-linux.py ...' (failure)
...
[192/2505] Copying CXX header __random/generate_canonical.h
[193/2505] Copying CXX header __random/geometric_distribution.h
[194/2505] Copying CXX header __random/independent_bits_engine.h
[195/2505] Copying CXX header __random/is_seed_sequence.h
[196/2505] Copying CXX header __random/is_valid.h
[197/2505] Copying CXX header __random/knuth_b.h
[198/2505] Copying CXX header __random/linear_congruential_engine.h
[199/2505] Copying CXX header __atomic/atomic_lock_free.h
[200/2505] Copying CXX header __algorithm/ranges_count.h
[201/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj
FAILED: libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/./bin/clang++ --target=armv6m-none-eabi -DLIBC_NAMESPACE=__llvm_libc_21_0_0_git -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/include/armv6m-unknown-none-eabi --target=armv6m-none-eabi -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" -D_LIBCPP_PRINT=1 -mthumb -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/runtimes/runtimes-armv6m-none-eabi-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG --target=armv6m-none-eabi -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_TYPES_TIME_T_IS_32_BIT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_EXTERNAL -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj -MF libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj.d -o libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:22:18: error: unknown type name 'int32_t'
   22 | constexpr static int32_t b64_char_to_int(char ch) {
      |                  ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:47:3: error: unknown type name 'int32_t'
   47 |   int32_t result = 0;
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:50:5: error: unknown type name 'int32_t'
   50 |     int32_t cur_val = b64_char_to_int(s[i]);
      |     ^
3 errors generated.
[202/2505] Generating header stdckdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdckdint.yaml
[203/2505] Generating header float.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/float.yaml
[204/2505] Building CXX object libc/src/stdlib/baremetal/CMakeFiles/libc.src.stdlib.baremetal.abort.dir/abort.cpp.obj
[205/2505] Generating header assert.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/assert.yaml
[206/2505] Copying CXX header __bit/invert_if.h
[207/2505] Copying CXX header __atomic/atomic.h
[208/2505] Generating header stdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdint.yaml
[209/2505] Generating header complex.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/complex.yaml
[210/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memccpy.dir/memccpy.cpp.obj
[211/2505] Generating header inttypes.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/inttypes.yaml
[212/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcoll.dir/strcoll.cpp.obj
[213/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcoll_l.dir/strcoll_l.cpp.obj
[214/2505] Generating header errno.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/errno.yaml
[215/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memrchr.dir/memrchr.cpp.obj
[216/2505] Generating header features.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/features.yaml
[217/2505] Generating header limits.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/limits.yaml
[218/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.rand_util.dir/rand_util.cpp.obj
[219/2505] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.inv_trigf_utils.dir/inv_trigf_utils.cpp.obj
[220/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memmem.dir/memmem.cpp.obj
[221/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcmp.dir/strcmp.cpp.obj
[222/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.labs.dir/labs.cpp.obj
[223/2505] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj
[224/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncmp.dir/strncmp.cpp.obj
[225/2505] Copying CXX header __bit/blsr.h
[226/2505] Generating header locale.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/locale.yaml
[227/2505] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.fini.dir/fini.cpp.obj
[228/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.llabs.dir/llabs.cpp.obj
Step 6 (build) failure: build (failure)
...
[192/2505] Copying CXX header __random/generate_canonical.h
[193/2505] Copying CXX header __random/geometric_distribution.h
[194/2505] Copying CXX header __random/independent_bits_engine.h
[195/2505] Copying CXX header __random/is_seed_sequence.h
[196/2505] Copying CXX header __random/is_valid.h
[197/2505] Copying CXX header __random/knuth_b.h
[198/2505] Copying CXX header __random/linear_congruential_engine.h
[199/2505] Copying CXX header __atomic/atomic_lock_free.h
[200/2505] Copying CXX header __algorithm/ranges_count.h
[201/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj
FAILED: libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj 
/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/./bin/clang++ --target=armv6m-none-eabi -DLIBC_NAMESPACE=__llvm_libc_21_0_0_git -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc -isystem /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/include/armv6m-unknown-none-eabi --target=armv6m-none-eabi -Wno-atomic-alignment "-Dvfprintf(stream, format, vlist)=vprintf(format, vlist)" "-Dfprintf(stream, format, ...)=printf(format)" -D_LIBCPP_PRINT=1 -mthumb -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-5mtex8or/runtimes/runtimes-armv6m-none-eabi-bins=../../../../llvm-project -ffile-prefix-map=/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/= -no-canonical-prefixes -Os -DNDEBUG --target=armv6m-none-eabi -DLIBC_QSORT_IMPL=LIBC_QSORT_HEAP_SORT -DLIBC_TYPES_TIME_T_IS_32_BIT -DLIBC_ADD_NULL_CHECKS "-DLIBC_MATH=(LIBC_MATH_SKIP_ACCURATE_PASS | LIBC_MATH_SMALL_TABLES)" -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_EXTERNAL -fpie -ffreestanding -DLIBC_FULL_BUILD -nostdlibinc -ffixed-point -fno-builtin -fno-exceptions -fno-lax-vector-conversions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -ftrivial-auto-var-init=pattern -fno-omit-frame-pointer -Wall -Wextra -Werror -Wconversion -Wno-sign-conversion -Wdeprecated -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wimplicit-fallthrough -Wwrite-strings -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wstrict-prototypes -Wthread-safety -Wglobal-constructors -DLIBC_COPT_PUBLIC_PACKAGING -MD -MT libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj -MF libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj.d -o libc/src/stdlib/CMakeFiles/libc.src.stdlib.a64l.dir/a64l.cpp.obj -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:22:18: error: unknown type name 'int32_t'
   22 | constexpr static int32_t b64_char_to_int(char ch) {
      |                  ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:47:3: error: unknown type name 'int32_t'
   47 |   int32_t result = 0;
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/libc/src/stdlib/a64l.cpp:50:5: error: unknown type name 'int32_t'
   50 |     int32_t cur_val = b64_char_to_int(s[i]);
      |     ^
3 errors generated.
[202/2505] Generating header stdckdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdckdint.yaml
[203/2505] Generating header float.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/float.yaml
[204/2505] Building CXX object libc/src/stdlib/baremetal/CMakeFiles/libc.src.stdlib.baremetal.abort.dir/abort.cpp.obj
[205/2505] Generating header assert.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/assert.yaml
[206/2505] Copying CXX header __bit/invert_if.h
[207/2505] Copying CXX header __atomic/atomic.h
[208/2505] Generating header stdint.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/stdint.yaml
[209/2505] Generating header complex.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/complex.yaml
[210/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memccpy.dir/memccpy.cpp.obj
[211/2505] Generating header inttypes.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/inttypes.yaml
[212/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcoll.dir/strcoll.cpp.obj
[213/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcoll_l.dir/strcoll_l.cpp.obj
[214/2505] Generating header errno.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/errno.yaml
[215/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memrchr.dir/memrchr.cpp.obj
[216/2505] Generating header features.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/features.yaml
[217/2505] Generating header limits.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/limits.yaml
[218/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.rand_util.dir/rand_util.cpp.obj
[219/2505] Building CXX object libc/src/math/generic/CMakeFiles/libc.src.math.generic.inv_trigf_utils.dir/inv_trigf_utils.cpp.obj
[220/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.memmem.dir/memmem.cpp.obj
[221/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strcmp.dir/strcmp.cpp.obj
[222/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.labs.dir/labs.cpp.obj
[223/2505] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.init.dir/init.cpp.obj
[224/2505] Building CXX object libc/src/string/CMakeFiles/libc.src.string.strncmp.dir/strncmp.cpp.obj
[225/2505] Copying CXX header __bit/blsr.h
[226/2505] Generating header locale.h from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/runtimes/../libc/include/locale.yaml
[227/2505] Building CXX object libc/startup/baremetal/CMakeFiles/libc.startup.baremetal.fini.dir/fini.cpp.obj
[228/2505] Building CXX object libc/src/stdlib/CMakeFiles/libc.src.stdlib.llabs.dir/llabs.cpp.obj

```

</details>

https://github.com/llvm/llvm-project/pull/144911

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