[Bug target/115010] m68k: invalid subl instruction generated

[admin@tho-otto.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115010

--- Comment #6 from Thorsten Otto <admin@tho-otto.de> ---
Oh, yes, of course.

command line that failed:
m68k-atari-mint-g++-14.1.0 -m68020-60 "-fno-PIE" "-c" "-O2"
"-fomit-frame-pointer" "-DIN_GCC" "-fno-exceptions" "-fno-rtti"
"-fasynchronous-unwind-tables" "-W" "-Wall" "-Wno-narrowing" "-Wwrite-strings"
"-Wcast-qual" "-Wmissing-format-attribute" "-Wconditionally-supported"
"-Woverloaded-virtual" "-pedantic" "-Wno-long-long" "-Wno-variadic-macros"
"-Wno-overlength-strings" "-DHAVE_CONFIG_H" "-fno-PIE" "-I." "-I."
"-I/home/sebilla/m68k-atari-mint-gcc/gcc"
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/."
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/../include"
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/../libcpp/include"
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/../libcody"
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/../libdecnumber"
"-I/home/sebilla/m68k-atari-mint-gcc/gcc/../libdecnumber/dpd"
"-I../libdecnumber" "-I/home/sebilla/m68k-atari-mint-gcc/gcc/../libbacktrace"
"-o" "tree-data-ref.o" "-save-temps"
"/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc"

(where /home/sebilla/m68k-atari-mint-gcc is the source directory of the repo)

The original cross-compiler (m68k-atari-mint-g++-14.1.0) was configured with:

/home/sebilla/m68k-atari-mint-gcc/configure --target=m68k-atari-mint
--build=x86_64-suse-linux-gnu --prefix=/usr --libdir=/usr/lib64
--bindir=/usr/bin --libexecdir='' 'CFLAGS_FOR_BUILD=-O2 -fomit-frame-pointer
-include /home/sebilla/m68k-atari-mint-gcc/gcc/libcwrap.h' CFLAGS='-O2
-fomit-frame-pointer -include /home/sebilla/m68k-atari-mint-gcc/gcc/libcwrap.h'
'CXXFLAGS_FOR_BUILD=-O2 -fomit-frame-pointer ' CXXFLAGS='-O2
-fomit-frame-pointer' 'BOOT_CFLAGS=-O2 -fomit-frame-pointer'
'CFLAGS_FOR_TARGET=-O2 -fomit-frame-pointer' 'CXXFLAGS_FOR_TARGET=-O2
-fomit-frame-pointer' LDFLAGS_FOR_BUILD= LDFLAGS= GNATMAKE_FOR_HOST=gnatmake-14
GNATBIND_FOR_HOST=gnatbind-14 GNATLINK_FOR_HOST=gnatlink-14
--with-pkgversion='MiNT 20240507' --disable-libcc1 --disable-werror
--with-gxx-include-dir=/usr/m68k-atari-mint/sys-root/usr/include/c++/14
--with-libstdcxx-zoneinfo=/usr/share/zoneinfo --with-gcc-major-version-only
--with-gcc --with-gnu-as --with-gnu-ld --with-system-zlib
--without-static-standard-libraries --without-stage1-ldflags --disable-libgomp
--without-libatomic --without-newlib --disable-libstdcxx-pch --disable-threads
--disable-win32-registry --disable-lto --enable-ssp --enable-libssp
--disable-plugin --disable-decimal-float --disable-nls
--with-libiconv-prefix=/usr --with-libintl-prefix=/usr
--with-sysroot=/usr/m68k-atari-mint/sys-root
--enable-languages=c,c++,fortran,ada,d,m2

The compiler that i'm trying to build was configured with:

'--target=m68k-atari-mint' '--host=m68k-atari-mint'
'--build=x86_64-suse-linux-gnu' '--prefix=/usr' '--libdir=/usr/lib'
'--bindir=/usr/bin' '--libexecdir=${libdir}' '--with-pkgversion=MiNT 20240507'
'--disable-libcc1' '--disable-werror'
'--with-gxx-include-dir=/usr/include/c++/14'
'--with-libstdcxx-zoneinfo=/usr/share/zoneinfo' '--with-gcc-major-version-only'
'--with-gcc' '--with-gnu-as' '--with-gnu-ld' '--with-system-zlib'
'--disable-libgomp' '--without-newlib' '--disable-libstdcxx-pch'
'--disable-threads' '--disable-win32-registry' '--disable-lto' '--enable-ssp'
'--enable-libssp' '--disable-plugin' '--disable-decimal-float' '--disable-nls'
'--with-cpu=m68020-60' '--with-build-sysroot=/usr/m68k-atari-mint/sys-root'
'build_alias=x86_64-suse-linux-gnu' 'host_alias=m68k-atari-mint'
'target_alias=m68k-atari-mint' 'CC=m68k-atari-mint-gcc-14.1.0 -m68020-60'
'CFLAGS=-O2 -fomit-frame-pointer' 'LDFLAGS=-Wl,-stack,512k'
'CXX=m68k-atari-mint-g++-14.1.0 -m68020-60' 'CXXFLAGS=-O2 -fomit-frame-pointer'
'CC_FOR_TARGET=m68k-atari-mint-gcc-14.1.0'
'CXX_FOR_TARGET=m68k-atari-mint-g++-14.1.0'
'GCC_FOR_TARGET=m68k-atari-mint-gcc-14.1.0'
'GFORTRAN_FOR_TARGET=m68k-atari-mint-gfortran-14.1.0'
'GOC_FOR_TARGET=m68k-atari-mint-goc-14.1.0'
'AS_FOR_TARGET=/home/sebilla/mintstd/binary7-package/usr/bin/m68k-atari-mint-as'
'RANLIB_FOR_TARGET=m68k-atari-mint-ranlib'
'STRIP_FOR_TARGET=m68k-atari-mint-strip' '--enable-languages=c,c++'

compiler output was:

/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc: In function 'bool
siv_subscript_p(const_tree, const_tree)':
/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc:3587:15: warning: this
statement may fall through [-Wimplicit-fallthrough=]
 3587 |               if (CHREC_VARIABLE (chrec_a) != CHREC_VARIABLE (chrec_b))
      |               ^~
/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc:3591:13: note: here
 3591 |             default:
      |             ^~~~~~~
/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc: In function 'bool
get_references_in_stmt(gimple*, vec<data_ref_loc, va_heap>*)':
/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc:5888:25: warning: this
statement may fall through [-Wimplicit-fallthrough=]
 5888 |             ref.is_read = true;
      |             ~~~~~~~~~~~~^~~~~~
/home/sebilla/m68k-atari-mint-gcc/gcc/tree-data-ref.cc:5890:11: note: here
 5890 |           case IFN_MASK_STORE:
      |           ^~~~
tree-data-ref.s: Assembler messages:
tree-data-ref.s:16664: Error: operands mismatch -- statement `sub.l
-402(%fp),-446(%fp)' ignored
tree-data-ref.s:16813: Error: operands mismatch -- statement `sub.l
-274(%fp),-302(%fp)' ignored