llvm-project.git/libc/src/stdlib/gpu/realloc.cpp, branch users/mingmingl-llvm/samplefdo-profile-format Unnamed repository; edit this file 'description' to name the repository. [libc] Efficiently implement 'realloc' for AMDGPU devices (#145960) 2025-06-30T13:39:40+00:00 Joseph Huber huberjn@outlook.com 2025-06-30T13:39:40+00:00 10445acfa64a80800272e09f70be4799877a237f Summary: Now that we have `malloc` we can implement `realloc` efficiently. This uses the known chunk sizes to avoid unnecessary allocations. We just return nullptr for NVPTX. I'd remove the list for the entrypoint but then the libc++ code would stop working. When someone writes the NVPTX support this will be trivial. 
Summary:
Now that we have `malloc` we can implement `realloc` efficiently. This
uses the known chunk sizes to avoid unnecessary allocations. We just
return nullptr for NVPTX. I'd remove the list for the entrypoint but
then the libc++ code would stop working. When someone writes the NVPTX
support this will be trivial.
 [libc] Implement placeholder memory functions on the GPU (#101082) 2024-07-30T15:15:30+00:00 Joseph Huber huberjn@outlook.com 2024-07-30T15:15:30+00:00 bf42a7860a208439a0a29f5dcc7a33949c484efb Summary: These functions are needed for `libc++` to link successfully. We can't implement them well currently, so simply provide some stand-in implementations. `realloc` will currently copy garbage and potentially fault and `aligned_alloc` will work unless your alignment is more than 4K alignment. However, these should work in practice to get tests running. I will write a real allocator soon™. 
Summary:
These functions are needed for `libc++` to link successfully. We can't
implement them well currently, so simply provide some stand-in
implementations. `realloc` will currently copy garbage and potentially
fault and `aligned_alloc` will work unless your alignment is more than
4K alignment. However, these should work in practice to get tests
running. I will write a real allocator soon™.