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Age	Commit message (Collapse)	Author
2024-07-12	[libc] Implement (v\|f)printf on the GPU (#96369)	Joseph Huber
	Summary: This patch implements the `printf` family of functions on the GPU using the new variadic support. This patch adapts the old handling in the `rpc_fprintf` placeholder, but adds an extra RPC call to get the size of the buffer to copy. This prevents the GPU from needing to parse the string. While it's theoretically possible for the pass to know the size of the struct, it's prohibitively difficult to do while maintaining ABI compatibility with NVIDIA's varargs. Depends on https://github.com/llvm/llvm-project/pull/96015.
2024-04-02	[libc] Implement temporary `printf` on the GPU (#85331)	Joseph Huber
	Summary: This patch adds a temporary implementation that uses a struct-based interface in lieu of varargs support. Once varargs support exists we will move this implementation to the "real" printf implementation. Conceptually, this patch has the client copy over its format string and arguments to the server. The server will then scan the format string searching for any specifiers that are actually a string. If it is a string then we will send the pointer back to the server to tell it to copy it back. This copied value will then replace the pointer when the final formatting is done. This will require a built-in extension to the varargs support to get access to the underlying struct. The varargs used on the GPU will simply be a struct wrapped in a varargs ABI.