diff --git a/configure b/configure
index cf2c4b85fe..35dcfbb709 100755
--- a/configure
+++ b/configure
@@ -15423,39 +15423,7 @@ $as_echo "#define HAVE_X86_64_POPCNTQ 1" >>confdefs.h
     fi
   ;;
   ppc*|powerpc*)
-    # On PPC, check if assembler supports LWARX instruction's mutex hint bit
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether assembler supports lwarx hint bit" >&5
-$as_echo_n "checking whether assembler supports lwarx hint bit... " >&6; }
-if ${pgac_cv_have_ppc_mutex_hint+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-int a = 0; int *p = &a; int r;
-	 __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  pgac_cv_have_ppc_mutex_hint=yes
-else
-  pgac_cv_have_ppc_mutex_hint=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_have_ppc_mutex_hint" >&5
-$as_echo "$pgac_cv_have_ppc_mutex_hint" >&6; }
-    if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then
-
-$as_echo "#define HAVE_PPC_LWARX_MUTEX_HINT 1" >>confdefs.h
-
-    fi
-    # Check if compiler accepts "i"(x) when __builtin_constant_p(x).
+    # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether __builtin_constant_p(x) implies \"i\"(x) acceptance" >&5
 $as_echo_n "checking whether __builtin_constant_p(x) implies \"i\"(x) acceptance... " >&6; }
 if ${pgac_cv_have_i_constraint__builtin_constant_p+:} false; then :
diff --git a/configure.ac b/configure.ac
index b5798bcb0a..a2aa725455 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1687,18 +1687,7 @@ case $host_cpu in
     fi
   ;;
   ppc*|powerpc*)
-    # On PPC, check if assembler supports LWARX instruction's mutex hint bit
-    AC_CACHE_CHECK([whether assembler supports lwarx hint bit],
-                   [pgac_cv_have_ppc_mutex_hint],
-    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
-	[int a = 0; int *p = &a; int r;
-	 __asm__ __volatile__ (" lwarx %0,0,%1,1\n" : "=&r"(r) : "r"(p));])],
-	[pgac_cv_have_ppc_mutex_hint=yes],
-	[pgac_cv_have_ppc_mutex_hint=no])])
-    if test x"$pgac_cv_have_ppc_mutex_hint" = xyes ; then
-	AC_DEFINE(HAVE_PPC_LWARX_MUTEX_HINT, 1, [Define to 1 if the assembler supports PPC's LWARX mutex hint bit.])
-    fi
-    # Check if compiler accepts "i"(x) when __builtin_constant_p(x).
+    # On PPC, check if compiler accepts "i"(x) when __builtin_constant_p(x).
     AC_CACHE_CHECK([whether __builtin_constant_p(x) implies "i"(x) acceptance],
                    [pgac_cv_have_i_constraint__builtin_constant_p],
     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index fc5ad5fd65..049c2d204f 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -349,9 +349,6 @@
 /* Define to 1 if you have the `posix_fallocate' function. */
 #undef HAVE_POSIX_FALLOCATE
 
-/* Define to 1 if the assembler supports PPC's LWARX mutex hint bit. */
-#undef HAVE_PPC_LWARX_MUTEX_HINT
-
 /* Define to 1 if you have the `ppoll' function. */
 #undef HAVE_PPOLL
 
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
index 5ee2c46267..ffd385765c 100644
--- a/src/include/pg_config_manual.h
+++ b/src/include/pg_config_manual.h
@@ -236,11 +236,9 @@
  * which should be safe in nearly all cases.  You might want to override
  * this if you are building 32-bit code for a known-recent PPC machine.
  */
-#ifdef HAVE_PPC_LWARX_MUTEX_HINT	/* must have assembler support in any case */
 #if defined(__ppc64__) || defined(__powerpc64__)
 #define USE_PPC_LWARX_MUTEX_HINT
 #endif
-#endif
 
 /*
  * On PPC machines, decide whether to use LWSYNC instructions in place of
diff --git a/src/tools/msvc/Solution.pm b/src/tools/msvc/Solution.pm
index cc82668457..243c5fa824 100644
--- a/src/tools/msvc/Solution.pm
+++ b/src/tools/msvc/Solution.pm
@@ -313,7 +313,6 @@ sub GenerateFiles
 		HAVE_PAM_PAM_APPL_H         => undef,
 		HAVE_POSIX_FADVISE          => undef,
 		HAVE_POSIX_FALLOCATE        => undef,
-		HAVE_PPC_LWARX_MUTEX_HINT   => undef,
 		HAVE_PPOLL                  => undef,
 		HAVE_PS_STRINGS             => undef,
 		HAVE_PTHREAD                => undef,