aix: Remove AIX 6.1 support.

AIX 6.1 is past end of life and extended support.  This patch removes
the configuration option and references to AIX 6.1.

contrib/ChangeLog:

	* config-list.mk: Remove rs6000-ibm-aix6.1.
	Rename rs6000-ibm-aix7.1 to powerpc-ibm-aix7.1.
	Add powerpc-ibm-aix7.2.

gcc/ChangeLog:

	* config.gcc (powerpc-ibm-aix6.*): Remove.
	* config/rs6000/aix61.h: Delete.

2 files changed, 0 insertions, 223 deletions

diff --git a/gcc/config.gcc b/gcc/config.gcc
index a020e08..e49e40f 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -3122,15 +3122,6 @@ pru*-*-*)
 	extra_objs="pru-pragma.o pru-passes.o"
 	use_gcc_stdint=wrap
 	;;
-rs6000-ibm-aix6.* | powerpc-ibm-aix6.*)
-	tm_file="${tm_file} rs6000/aix.h rs6000/aix61.h rs6000/xcoff.h rs6000/aix-stdint.h"
-	tmake_file="rs6000/t-aix52 t-slibgcc"
-	extra_options="${extra_options} rs6000/aix64.opt"
-	use_collect2=yes
-	thread_file='aix'
-	use_gcc_stdint=wrap
-	default_use_cxa_atexit=yes
-	;;
 rs6000-ibm-aix7.1.* | powerpc-ibm-aix7.1.*)
 	tmake_file="rs6000/t-aix52 t-slibgcc"
 	if test x$cpu_is_64bit = xyes; then
diff --git a/gcc/config/rs6000/aix61.h b/gcc/config/rs6000/aix61.h
deleted file mode 100644
index 78c179b..0000000
--- a/gcc/config/rs6000/aix61.h
+++ /dev/null
@@ -1,214 +0,0 @@
-/* Definitions of target machine for GNU compiler,
-   for IBM RS/6000 POWER running AIX V6.1.
-   Copyright (C) 2002-2021 Free Software Foundation, Inc.
-   Contributed by David Edelsohn (edelsohn@gnu.org).
-
-   This file is part of GCC.
-
-   GCC is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3, or (at your
-   option) any later version.
-
-   GCC is distributed in the hope that it will be useful, but WITHOUT
-   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
-   License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with GCC; see the file COPYING3.  If not see
-   <http://www.gnu.org/licenses/>.  */
-
-/* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
-   get control in TARGET_OPTION_OVERRIDE.  */
-
-#define SUBTARGET_OVERRIDE_OPTIONS					\
-do {									\
-  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
-    {									\
-      rs6000_isa_flags |= OPTION_MASK_POWERPC64;			\
-      warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
-    }									\
-  if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)			\
-    {									\
-      rs6000_long_double_type_size = 64;				\
-      if (global_options_set.x_rs6000_long_double_type_size)		\
-	warning (0, "soft-float and long-double-128 are incompatible");	\
-    }									\
-  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
-    {									\
-      error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
-    }									\
-  if ((rs6000_isa_flags_explicit					\
-       & OPTION_MASK_MINIMAL_TOC) != 0)					\
-    {									\
-      if (global_options_set.x_rs6000_current_cmodel			\
-	  && rs6000_current_cmodel != CMODEL_SMALL)			\
-	error ("%<-mcmodel%> incompatible with other toc options"); 	\
-      SET_CMODEL (CMODEL_SMALL);					\
-    }									\
-  if (rs6000_current_cmodel != CMODEL_SMALL)				\
-    {									\
-      TARGET_NO_FP_IN_TOC = 1;						\
-      TARGET_NO_SUM_IN_TOC = 1;						\
-    }									\
-  if (rs6000_current_cmodel == CMODEL_MEDIUM)				\
-    {									\
-      rs6000_current_cmodel = CMODEL_LARGE;				\
-    }									\
-} while (0)
-
-#undef ASM_SPEC
-#define ASM_SPEC "-u %{maix64:-a64 %{!mcpu*:-mppc64}} %(asm_cpu)"
-
-/* Common ASM definitions used by ASM_SPEC amongst the various targets for
-   handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.c to
-   provide the default assembler options if the user uses -mcpu=native, so if
-   you make changes here, make them there also.  */
-#undef ASM_CPU_SPEC
-#define ASM_CPU_SPEC \
-"%{!mcpu*: %{!maix64: \
-  %{mpowerpc64: -mppc64} \
-  %{maltivec: -m970} \
-  %{!maltivec: %{!mpowerpc64: %(asm_default)}}}} \
-%{mcpu=native: %(asm_cpu_native)} \
-%{mcpu=power3: -m620} \
-%{mcpu=power4: -mpwr4} \
-%{mcpu=power5: -mpwr5} \
-%{mcpu=power5+: -mpwr5x} \
-%{mcpu=power6: -mpwr6} \
-%{mcpu=power6x: -mpwr6} \
-%{mcpu=power7: -mpwr7} \
-%{mcpu=power8: -mpwr8} \
-%{mcpu=power9: -mpwr9} \
-%{mcpu=powerpc: -mppc} \
-%{mcpu=rs64a: -mppc} \
-%{mcpu=603: -m603} \
-%{mcpu=603e: -m603} \
-%{mcpu=604: -m604} \
-%{mcpu=604e: -m604} \
-%{mcpu=620: -m620} \
-%{mcpu=630: -m620} \
-%{mcpu=970: -m970} \
-%{mcpu=G5: -m970} \
-%{mvsx: %{!mcpu*: -mpwr6}} \
--many"
-
-#undef	ASM_DEFAULT_SPEC
-#define ASM_DEFAULT_SPEC "-mpwr4"
-
-#undef TARGET_OS_CPP_BUILTINS
-#define TARGET_OS_CPP_BUILTINS()     \
-  do                                 \
-    {                                \
-      builtin_define ("_AIX43");     \
-      builtin_define ("_AIX51");     \
-      builtin_define ("_AIX52");     \
-      builtin_define ("_AIX53");     \
-      builtin_define ("_AIX61");     \
-      TARGET_OS_AIX_CPP_BUILTINS (); \
-    }                                \
-  while (0)
-
-#undef CPP_SPEC
-#define CPP_SPEC "%{posix: -D_POSIX_SOURCE}	\
-  %{ansi: -D_ANSI_C_SOURCE}			\
-  %{maix64: -D__64BIT__}			\
-  %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
-  %{pthread: -D_THREAD_SAFE}"
-
-/* The GNU C++ standard library requires that these macros be 
-   defined.  Synchronize with libstdc++ os_defines.h.  */
-#undef CPLUSPLUS_CPP_SPEC                       
-#define CPLUSPLUS_CPP_SPEC			\
-  "-D_ALL_SOURCE -D__COMPATMATH__		\
-   %{maix64: -D__64BIT__}			\
-   %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
-   %{pthread: -D_THREAD_SAFE}"
-
-#undef  TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_PPC_GPOPT | MASK_PPC_GFXOPT | MASK_MFCRF)
-
-#undef  PROCESSOR_DEFAULT
-#define PROCESSOR_DEFAULT PROCESSOR_POWER7
-#undef  PROCESSOR_DEFAULT64
-#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
-
-/* AIX 6.1 kernel and assembler have necessary support for Altivec and VSX.  */
-#undef OS_MISSING_ALTIVEC
-
-/* Define this macro as a C expression for the initializer of an
-   array of string to tell the driver program which options are
-   defaults for this target and thus do not need to be handled
-   specially when using `MULTILIB_OPTIONS'.
-
-   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
-   the target makefile fragment or if none of the options listed in
-   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
-
-#undef	MULTILIB_DEFAULTS
-
-#undef LIB_SPEC
-#define LIB_SPEC "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
-   %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
-   %{!maix64:%{!shared:%{g*:-lg}}}\
-   %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
-   %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
-   %{mlong-double-128:-lc128}\
-   %{pthread:-lpthreads} -lc"
-
-#undef LINK_SPEC
-#define LINK_SPEC "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
-   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
-   %{!maix64:%{!shared:%{g*: %(link_libg) }}} %{maix64:-b64}\
-   %{mpe:-binitfini:poe_remote_main}"
-
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "%{!shared:\
-   %{maix64:%{pg:gcrt0_64%O%s}%{!pg:%{p:mcrt0_64%O%s}%{!p:crt0_64%O%s}}}\
-   %{!maix64:\
-     %{pthread:%{pg:gcrt0_r%O%s}%{!pg:%{p:mcrt0_r%O%s}%{!p:crt0_r%O%s}}}\
-     %{!pthread:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}}}\
-   %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s"
-
-/* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
-
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "long int"
-
-/* Type used for wchar_t, as a string used in a declaration.  */
-#undef  WCHAR_TYPE
-#define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
-
-/* Width of wchar_t in bits.  */
-#undef  WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
-
-/* AIX 4.2 and above provides initialization and finalization function
-   support from linker command line.  */
-#undef HAS_INIT_SECTION
-#define HAS_INIT_SECTION
-
-#undef LD_INIT_SWITCH
-#define LD_INIT_SWITCH "-binitfini"
-
-#ifndef _AIX52
-extern long long int    atoll(const char *);  
-#endif
-
-/* This target uses the aix64.opt file.  */
-#define TARGET_USES_AIX64_OPT 1
-
-/* Large TOC Support */
-#ifdef HAVE_LD_LARGE_TOC
-#undef TARGET_CMODEL
-#define TARGET_CMODEL rs6000_current_cmodel
-#define SET_CMODEL(opt) rs6000_current_cmodel = opt
-#else
-#define SET_CMODEL(opt) do {} while (0)
-#endif
-
-/* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
-   but does not have crtbegin/end.  */
-
-#define TARGET_AIX_VERSION 61