From 9f03e9de77b5ff11c7cbea4ee12e54b08223ebf9 Mon Sep 17 00:00:00 2001
From: Nico Weber <nicolasweber@gmx.de>
Date: Mon, 2 Apr 2018 14:18:13 +0000
Subject: [PATCH] Remove HAVE_WRITEV that's unused after r255837.

llvm-svn: 328977
---
 llvm/cmake/config-ix.cmake              | 4 ----
 llvm/include/llvm/Config/config.h.cmake | 6 ------
 llvm/lib/Support/raw_ostream.cpp        | 3 ---
 3 files changed, 13 deletions(-)

diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index e988fea89054..be4ecde72747 100644
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -47,7 +47,6 @@ check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
-check_include_file(sys/uio.h HAVE_SYS_UIO_H)
 check_include_file(termios.h HAVE_TERMIOS_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
@@ -198,9 +197,6 @@ check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
 endif()
-if( HAVE_SYS_UIO_H )
-  check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
-endif()
 set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
 check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
 set(CMAKE_REQUIRED_DEFINITIONS "")
diff --git a/llvm/include/llvm/Config/config.h.cmake b/llvm/include/llvm/Config/config.h.cmake
index 6250aa37054d..7ab9f55bc413 100644
--- a/llvm/include/llvm/Config/config.h.cmake
+++ b/llvm/include/llvm/Config/config.h.cmake
@@ -226,9 +226,6 @@
 /* Define to 1 if you have the <sys/types.h> header file. */
 #cmakedefine HAVE_SYS_TYPES_H ${HAVE_SYS_TYPES_H}
 
-/* Define to 1 if you have the <sys/uio.h> header file. */
-#cmakedefine HAVE_SYS_UIO_H ${HAVE_SYS_UIO_H}
-
 /* Define if the setupterm() function is supported this platform. */
 #cmakedefine HAVE_TERMINFO ${HAVE_TERMINFO}
 
@@ -244,9 +241,6 @@
 /* Define to 1 if you have the <valgrind/valgrind.h> header file. */
 #cmakedefine HAVE_VALGRIND_VALGRIND_H ${HAVE_VALGRIND_VALGRIND_H}
 
-/* Define to 1 if you have the `writev' function. */
-#cmakedefine HAVE_WRITEV ${HAVE_WRITEV}
-
 /* Define to 1 if you have the <zlib.h> header file. */
 #cmakedefine HAVE_ZLIB_H ${HAVE_ZLIB_H}
 
diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index e02611103080..5ecb18fc72fe 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -41,9 +41,6 @@
 #if defined(HAVE_UNISTD_H)
 # include <unistd.h>
 #endif
-#if defined(HAVE_SYS_UIO_H) && defined(HAVE_WRITEV)
-#  include <sys/uio.h>
-#endif
 
 #if defined(__CYGWIN__)
 #include <io.h>