diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index 9e9e28f06730..18026d69e87c 100644
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -28,7 +28,6 @@ check_include_file(dlfcn.h HAVE_DLFCN_H)
 check_include_file(errno.h HAVE_ERRNO_H)
 check_include_file(fcntl.h HAVE_FCNTL_H)
 check_include_file(link.h HAVE_LINK_H)
-check_include_file(malloc.h HAVE_MALLOC_H)
 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
 if( NOT PURE_WINDOWS )
   check_include_file(pthread.h HAVE_PTHREAD_H)
diff --git a/llvm/include/llvm/Config/config.h.cmake b/llvm/include/llvm/Config/config.h.cmake
index a66d0fa070a3..53e6c202d13a 100644
--- a/llvm/include/llvm/Config/config.h.cmake
+++ b/llvm/include/llvm/Config/config.h.cmake
@@ -127,9 +127,6 @@
 /* Define to 1 if you have the `mallinfo' function. */
 #cmakedefine HAVE_MALLINFO ${HAVE_MALLINFO}
 
-/* Define to 1 if you have the <malloc.h> header file. */
-#cmakedefine HAVE_MALLOC_H ${HAVE_MALLOC_H}
-
 /* Define to 1 if you have the <malloc/malloc.h> header file. */
 #cmakedefine HAVE_MALLOC_MALLOC_H ${HAVE_MALLOC_MALLOC_H}
 
diff --git a/llvm/lib/Support/Unix/Process.inc b/llvm/lib/Support/Unix/Process.inc
index 4597ea4fa91e..7c834f971146 100644
--- a/llvm/lib/Support/Unix/Process.inc
+++ b/llvm/lib/Support/Unix/Process.inc
@@ -32,10 +32,7 @@
 #if HAVE_SIGNAL_H
 #include <signal.h>
 #endif
-// DragonFlyBSD, and OpenBSD have deprecated <malloc.h> for
-// <stdlib.h> instead. Unix.h includes this for us already.
-#if defined(HAVE_MALLOC_H) && !defined(__DragonFly__) && \
-    !defined(__OpenBSD__) 
+#if defined(HAVE_MALLINFO)
 #include <malloc.h>
 #endif
 #if defined(HAVE_MALLCTL)
diff --git a/llvm/utils/gn/secondary/llvm/include/llvm/Config/BUILD.gn b/llvm/utils/gn/secondary/llvm/include/llvm/Config/BUILD.gn
index 0bf598d0d3d1..ebeb6f365d39 100644
--- a/llvm/utils/gn/secondary/llvm/include/llvm/Config/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/include/llvm/Config/BUILD.gn
@@ -159,7 +159,6 @@ write_cmake_config("config") {
       "HAVE_CRASHREPORTER_INFO=1",
       "HAVE_DECL_ARC4RANDOM=1",
       "HAVE_DLADDR=1",
-      "HAVE_MALLOC_H=",
       "HAVE_MACH_MACH_H=1",
       "HAVE_MALLOC_MALLOC_H=1",
       "HAVE_MALLOC_ZONE_STATISTICS=1",
@@ -171,7 +170,6 @@ write_cmake_config("config") {
       "HAVE_DECL_ARC4RANDOM=",
       "HAVE_DLADDR=",
       "HAVE_MACH_MACH_H=",
-      "HAVE_MALLOC_H=1",
       "HAVE_MALLOC_MALLOC_H=",
       "HAVE_MALLOC_ZONE_STATISTICS=",
       "HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC=",