[llvm] [llvm-calc-occupancy] Add an AMDGPU occupancy calculator tool (PR #208727)

Thu Jul 30 06:22:16 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `amdgpu-hip-blender` running on `AMD-bb-w-04` while building `llvm` at step 3 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/232/builds/4388

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

```
Step 3 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/hip-build.sh --jobs=' (failure)
...
-- For x86_64 builtins preferring x86_64/floatdidf.c to floatdidf.c
-- For x86_64 builtins preferring x86_64/floatdisf.c to floatdisf.c
-- For x86_64 builtins preferring x86_64/floatundidf.S to floatundidf.c
-- For x86_64 builtins preferring x86_64/floatundisf.S to floatundisf.c
-- For x86_64 builtins preferring x86_64/floatdixf.c to floatdixf.c
-- For x86_64 builtins preferring x86_64/floatundixf.S to floatundixf.c
-- Configuring done (1.4s)
-- Generating done (0.0s)
-- Build files have been written to: /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/runtimes/builtins-bins
[5624/5651] Building CXX object tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o
FAILED: tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o 
ccache /opt/rh/gcc-toolset-13/root/usr/bin/c++ -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/tools/llvm-calc-occupancy -I/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/include -I/home/botworker/bbot/hip-blender/llvm-project/llvm/include -I/home/botworker/bbot/hip-blender/llvm-project/llvm/lib/Target/AMDGPU -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/lib/Target/AMDGPU -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o -MF tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o.d -o tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o -c /home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp
/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp: In function ‘int main(int, char**)’:
/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp:229: error: ‘getAddressableNumSGPRs’ is not a member of ‘llvm::AMDGPU::IsaInfo’; did you mean ‘getAddressableNumVGPRs’?
  229 |   unsigned AddrSGPRs = AMDGPU::IsaInfo::getAddressableNumSGPRs(STI);
      | 
[5625/5651] Linking CXX executable bin/clangd
ninja: build stopped: subcommand failed.
Step 7 (Building LLVM) failure: Building LLVM (failure)
...
-- For x86_64 builtins preferring x86_64/floatdidf.c to floatdidf.c
-- For x86_64 builtins preferring x86_64/floatdisf.c to floatdisf.c
-- For x86_64 builtins preferring x86_64/floatundidf.S to floatundidf.c
-- For x86_64 builtins preferring x86_64/floatundisf.S to floatundisf.c
-- For x86_64 builtins preferring x86_64/floatdixf.c to floatdixf.c
-- For x86_64 builtins preferring x86_64/floatundixf.S to floatundixf.c
-- Configuring done (1.4s)
-- Generating done (0.0s)
-- Build files have been written to: /home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/runtimes/builtins-bins
[5624/5651] Building CXX object tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o
FAILED: tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o 
ccache /opt/rh/gcc-toolset-13/root/usr/bin/c++ -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/tools/llvm-calc-occupancy -I/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/include -I/home/botworker/bbot/hip-blender/llvm-project/llvm/include -I/home/botworker/bbot/hip-blender/llvm-project/llvm/lib/Target/AMDGPU -I/home/botworker/bbot/hip-blender/botworker/amdgpu-hip-blender/llvm/lib/Target/AMDGPU -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o -MF tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o.d -o tools/llvm-calc-occupancy/CMakeFiles/llvm-calc-occupancy.dir/llvm-calc-occupancy.cpp.o -c /home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp
/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp: In function ‘int main(int, char**)’:
/home/botworker/bbot/hip-blender/llvm-project/llvm/tools/llvm-calc-occupancy/llvm-calc-occupancy.cpp:229: error: ‘getAddressableNumSGPRs’ is not a member of ‘llvm::AMDGPU::IsaInfo’; did you mean ‘getAddressableNumVGPRs’?
  229 |   unsigned AddrSGPRs = AMDGPU::IsaInfo::getAddressableNumSGPRs(STI);
      | 
[5625/5651] Linking CXX executable bin/clangd
ninja: build stopped: subcommand failed.
program finished with exit code 1
elapsedTime=68.519177

```

</details>

https://github.com/llvm/llvm-project/pull/208727