Tidy up claimed supported CPUs and OSes.

 * Remove arbitrary mention of certain endianness and bitness variants;
   it's enough to say that applicable variants are expected to work.
 * List RISC-V (known to work, being tested).
 * List SuperH and M88K (code exists, unknown status, like M68K).
 * De-list VAX and remove code (known not to work).
 * Remove stray trace of Alpha (support was removed years ago).
 * List illumos, DragonFlyBSD (known to work, being tested).
 * No need to single Windows out by listing a specific version, when we
   don't do that for other OSes; it's enough to say that we support
   current versions of the listed OSes (when 16 ships, that'll be
   Windows 10+).

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Greg Stark <stark@mit.edu>
Discussion: https://postgr.es/m/CA%2BhUKGKk7NZO1UnJM0PyixcZPpCGqjBXW_0bzFZpJBGAf84XKg%40mail.gmail.com

diff --git a/contrib/pgcrypto/crypt-blowfish.c b/contrib/pgcrypto/crypt-blowfish.c
index a663852ccf90c36d0d1962ff5f0d29e3aaf95983..1264eccb3f248deece4896939e952f37bc799f07 100644 (file)
--- a/contrib/pgcrypto/crypt-blowfish.c
+++ b/contrib/pgcrypto/crypt-blowfish.c
@@ -41,7 +41,7 @@
 #ifdef __i386__
 #define BF_ASM             0   /* 1 */
 #define BF_SCALE           1
-#elif defined(__x86_64__) || defined(__alpha__) || defined(__hppa__)
+#elif defined(__x86_64__) || defined(__hppa__)
 #define BF_ASM             0
 #define BF_SCALE           1
 #else

diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index 1a1343a008e6764cd86dcc5676565a1fc12c8913..dec13eaa936deeb2520a072e413b2b802c9024c0 100644 (file)
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -2125,18 +2125,19 @@ export MANPATH
 
   <para>
    In general, <productname>PostgreSQL</productname> can be expected to work on
-   these CPU architectures: x86, x86_64, PowerPC,
-   PowerPC 64, S/390, S/390x, Sparc, Sparc 64, ARM, MIPS, MIPSEL,
-   and PA-RISC.  Code support exists for M68K, M32R, and VAX, but these
+   these CPU architectures: x86, PowerPC, S/390, Sparc, ARM, MIPS, RISC-V,
+   and PA-RISC, including
+   big-endian, little-endian, 32-bit, and 64-bit variants where applicable.
+   Code support exists for M68K, M88K, M32R, and SuperH, but these
    architectures are not known to have been tested recently.  It is often
    possible to build on an unsupported CPU type by configuring with
    <option>--disable-spinlocks</option>, but performance will be poor.
   </para>
 
   <para>
-   <productname>PostgreSQL</productname> can be expected to work on these operating
-   systems: Linux (all recent distributions), Windows (10 and later),
-   FreeBSD, OpenBSD, NetBSD, macOS, AIX, and Solaris.
+   <productname>PostgreSQL</productname> can be expected to work on current
+   versions of these operating systems: Linux, Windows,
+   FreeBSD, OpenBSD, NetBSD, DragonFlyBSD, macOS, AIX, Solaris, and illumos.
    Other Unix-like systems may also work but are not currently
    being tested.  In most cases, all CPU architectures supported by
    a given operating system will work.  Look in

diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
index c4a19b2f433ffcb3e2c2c65fe5e234dac1aec7a1..1f5394ef7f86af8e8d3d8901e3c4b9e341d6e008 100644 (file)
--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -548,36 +548,6 @@ tas(volatile slock_t *lock)
 #endif  /* __m88k__ */
 
 
-/*
- * VAXen -- even multiprocessor ones
- * (thanks to Tom Ivar Helbekkmo)
- */
-#if defined(__vax__)
-#define HAS_TEST_AND_SET
-
-typedef unsigned char slock_t;
-
-#define TAS(lock) tas(lock)
-
-static __inline__ int
-tas(volatile slock_t *lock)
-{
-   register int    _res;
-
-   __asm__ __volatile__(
-       "   movl    $1, %0          \n"
-       "   bbssi   $0, (%2), 1f    \n"
-       "   clrl    %0              \n"
-       "1: \n"
-:      "=&r"(_res), "+m"(*lock)
-:      "r"(lock)
-:      "memory");
-   return _res;
-}
-
-#endif  /* __vax__ */
-
-
 #if defined(__mips__) && !defined(__sgi)   /* non-SGI MIPS */
 #define HAS_TEST_AND_SET