Since the change r14-383-gfaf8bea79b6256 "Enable LRA on
several ports", mmix has been broken building libstdc++-v3:
libtool: compile: /obj/./gcc/xgcc -shared-libgcc -B/obj/./gcc
-nostdinc++ -L/obj/mmix/libstdc++-v3/src
-L/obj/mmix/libstdc++-v3/src/.libs
-L/obj/mmix/libstdc++-v3/libsupc++/.libs -nostdinc -B/obj/mmix/newlib/
-isystem /obj/mmix/newlib/targ-include -isystem
/gcctop/newlib/libc/include -B/obj/mmix/libgloss/mmix
-L/obj/mmix/libgloss/libnosys -L/gcctop/libgloss/mmix
-B/home/hp/tmp/mmix230811-00/pre/mmix/bin/
-B/home/hp/tmp/mmix230811-00/pre/mmix/lib/ -isystem
/home/hp/tmp/mmix230811-00/pre/mmix/include -isystem
/home/hp/tmp/mmix230811-00/pre/mmix/sys-include
-I/gcctop/libstdc++-v3/../libgcc -I/obj/mmix/libstdc++-v3/include/mmix
-I/obj/mmix/libstdc++-v3/include -I/gcctop/libstdc++-v3/libsupc++
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual
-Wabi=2 -fdiagnostics-show-location=once -ffunction-sections
-fdata-sections -frandom-seed=eh_type.lo -g -O2 -c
/gcctop/libstdc++-v3/libsupc++/eh_type.cc -o eh_type.o
/gcctop/libstdc++-v3/libsupc++/eh_terminate.cc: In function 'void
__cxxabiv1::__terminate(std::terminate_handler)':
/gcctop/libstdc++-v3/libsupc++/eh_terminate.cc:53:1: error: unable to
generate reloads for:
53 | }
| ^
(insn 31 36 44 4 (parallel [
(unspec_volatile [
(plus:DI (reg/f:DI 253 $253)
(const_int 24 [0x18]))
] 1)
(clobber (reg:DI 275))
(clobber (reg:DI 259 rJ))
]) "/gcctop/libstdc++-v3/libsupc++/eh_terminate.cc":51:3
discrim 1 63 {*nonlocal_goto_receiver_expanded}
(expr_list:REG_UNUSED (reg:DI 275)
(expr_list:REG_UNUSED (reg:DI 259 rJ)
(nil))))
during RTL pass: reload
/gcctop/libstdc++-v3/libsupc++/eh_terminate.cc:53:1:
internal compiler error: in curr_insn_transform, at lra-constraints.cc:4281
This commit temporarily reverts the MMIX part of
r14-383-gfaf8bea79b6256 back to reload.
* config/mmix/mmix.cc: Disable LRA for MMIX.
---
gcc/config/mmix/mmix.cc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/config/mmix/mmix.cc b/gcc/config/mmix/mmix.cc
index 347430927499..5160794d9d03 100644
--- a/gcc/config/mmix/mmix.cc
+++ b/gcc/config/mmix/mmix.cc
@@ -274,6 +274,9 @@ static HOST_WIDE_INT mmix_starting_frame_offset (void);
#undef TARGET_PREFERRED_OUTPUT_RELOAD_CLASS
#define TARGET_PREFERRED_OUTPUT_RELOAD_CLASS mmix_preferred_output_reload_class
+#undef TARGET_LRA_P
+#define TARGET_LRA_P hook_bool_void_false
+
#undef TARGET_LEGITIMATE_ADDRESS_P
#define TARGET_LEGITIMATE_ADDRESS_P mmix_legitimate_address_p
#undef TARGET_LEGITIMATE_CONSTANT_P
--
2.30.2
