This patch has broken GCC bootstrap on AIX.  It appears to rely upon, or
complain about, the command "seq":

/nasfarm/edelsohn/install/GCC12/bin/g++ -std=c++11   -g -DIN_GCC
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-fno-common  -DHAVE_CONFIG_H  -DGENERATOR_FILE -static-libstdc++
-static-libgcc -Wl,-bbigtoc -Wl,-bmaxdata:0x40000000 -o build/genmatch \
    build/genmatch.o ../build-powerpc-ibm-aix7.2.5.0/libcpp/libcpp.a
build/errors.o build/vec.o build/hash-table.o build/sort.o
../build-powerpc-ibm-aix7.2.5.0/libiberty/libiberty.a
/usr/bin/bash: seq: command not found
/usr/bin/bash: seq: command not found
build/genmatch --gimple \
    --header=tmp-gimple-match-auto.h --include=gimple-match-auto.h \
    /nasfarm/edelsohn/src/src/gcc/match.pd

All of the match files are dumped to stdout.

Thanks, David