[libc] Remove old RPC host call extension for GPU

[jhuber6]

Summary:
This was originally a hacked together function that served to just
implement some features for OpenMP. That has been moved into OpenMP
itself now that we have exported RPC properly. This can now be deleted.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Joseph Huber (jhuber6)

Changes

Summary:
This was originally a hacked together function that served to just
implement some features for OpenMP. That has been moved into OpenMP
itself now that we have exported RPC properly. This can now be deleted.

---

Full diff: https://github.com/llvm/llvm-project/pull/120800.diff

6 Files Affected:

• (modified) libc/config/gpu/entrypoints.txt (-3)
• (modified) libc/config/gpu/headers.txt (-3)
• (removed) libc/hdrgen/yaml/gpu/rpc.yaml (-23)
• (modified) libc/include/CMakeLists.txt (-13)
• (removed) libc/include/gpu/rpc.h.def (-18)
• (modified) libc/src/__support/RPC/CMakeLists.txt (-1)

diff --git a/libc/config/gpu/entrypoints.txt b/libc/config/gpu/entrypoints.txt
index 28317c656d4be4..b008e0e6684fdd 100644
--- a/libc/config/gpu/entrypoints.txt
+++ b/libc/config/gpu/entrypoints.txt
@@ -271,9 +271,6 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.locale.newlocale
     libc.src.locale.setlocale
     libc.src.locale.uselocale
-
-    # gpu/rpc.h entrypoints
-    libc.src.gpu.rpc_host_call
 )
 
 set(TARGET_LIBM_ENTRYPOINTS
diff --git a/libc/config/gpu/headers.txt b/libc/config/gpu/headers.txt
index adbd014fba6c18..fa8ad7c11ba8b1 100644
--- a/libc/config/gpu/headers.txt
+++ b/libc/config/gpu/headers.txt
@@ -18,7 +18,4 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.uchar
     libc.include.features
     libc.include.locale
-
-    # Header for RPC extensions
-    libc.include.gpu_rpc
 )
diff --git a/libc/hdrgen/yaml/gpu/rpc.yaml b/libc/hdrgen/yaml/gpu/rpc.yaml
deleted file mode 100644
index da4f6afb7856d2..00000000000000
--- a/libc/hdrgen/yaml/gpu/rpc.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-header: gpu-rpc.h
-macros: []
-types: []
-enums: []
-objects: []
-functions:
-  - name: rpc_fprintf
-    standards:
-      - GPUExtensions
-    return_type: int
-    arguments:
-      - type: ::FILE *__restrict
-      - type: const char *__restrict
-      - type: void *
-      - type: size_t
-  - name: rpc_host_call
-    standards:
-      - GPUExtensions
-    return_type: unsigned long long
-    arguments:
-      - type: void *
-      - type: void *
-      - type: size_t
diff --git a/libc/include/CMakeLists.txt b/libc/include/CMakeLists.txt
index 18ce8e22d1a0ac..3a05c01abba5a4 100644
--- a/libc/include/CMakeLists.txt
+++ b/libc/include/CMakeLists.txt
@@ -750,19 +750,6 @@ add_header_macro(
     .llvm-libc-types.struct_lconv
 )
 
-if(LIBC_TARGET_OS_IS_GPU)
-  file(MAKE_DIRECTORY ${LIBC_INCLUDE_DIR}/gpu)
-
-  add_header_macro(
-    gpu_rpc
-    ../libc/hdrgen/yaml/gpu/rpc.yaml
-    gpu/rpc.h.def
-    gpu/rpc.h
-    DEPENDS
-      .llvm_libc_common_h
-  )
-endif()
-
 if(NOT LLVM_LIBC_FULL_BUILD)
   # We don't install headers in non-fullbuild mode.
   return()
diff --git a/libc/include/gpu/rpc.h.def b/libc/include/gpu/rpc.h.def
deleted file mode 100644
index 060650345e1fb1..00000000000000
--- a/libc/include/gpu/rpc.h.def
+++ /dev/null
@@ -1,18 +0,0 @@
-//===-- GPU header rpc.h --------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIBC_GPU_RPC_H
-#define LLVM_LIBC_GPU_RPC_H
-
-#include "__llvm-libc-common.h"
-
-#include "../llvm-libc-types/rpc_opcodes_t.h"
-
-%%public_api()
-
-#endif // LLVM_LIBC_GPU_RPC_H
diff --git a/libc/src/__support/RPC/CMakeLists.txt b/libc/src/__support/RPC/CMakeLists.txt
index 0a7141fb60bf03..cac9c4e05e3698 100644
--- a/libc/src/__support/RPC/CMakeLists.txt
+++ b/libc/src/__support/RPC/CMakeLists.txt
@@ -9,6 +9,5 @@ add_object_library(
   HDRS
     rpc_client.h
   DEPENDS
-    libc.include.gpu_rpc
     libc.src.__support.GPU.utils
 )