https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63683
Bug ID: 63683
Summary: m32c-rtems ICE unable to find spill register compiling
libgcc
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: joel at gcc dot gnu.org
gcc 4.9 branch in git at 1d2b7cdfcb9376a6ee98964b11cf73fe14154e13
newlib head
m32c fails with ICE
Configured as follows:
../${GCC}/configure \
--prefix=${PREFIX} \
--bindir=${PREFIX}/bin \
--exec_prefix=${PREFIX} \
--includedir=${PREFIX}/include \
--libdir=${PREFIX}/lib \
--libexecdir=${PREFIX}/libexec \
--mandir=${PREFIX}/share/man \
--infodir=${PREFIX}/share/info \
--datadir=${PREFIX}/share \
--target=${TARGET} \
--disable-sjlj-exceptions \
--disable-libstdcxx-pch \
--with-gnu-as --with-gnu-ld --verbose \
--with-newlib \
--with-system-zlib \
--disable-nls --without-included-gettext \
--disable-win32-registry \
--enable-version-specific-runtime-libs \
--disable-lto \
--enable-newlib-io-c99-formats \
--enable-newlib-iconv \
--enable-newlib-iconv-encodings=big5,cp775,cp850,cp852,cp855,\
cp866,euc_jp,euc_kr,euc_tw,iso_8859_1,iso_8859_10,iso_8859_11,\
iso_8859_13,iso_8859_14,iso_8859_15,iso_8859_2,iso_8859_3,\
iso_8859_4,iso_8859_5,iso_8859_6,iso_8859_7,iso_8859_8,iso_8859_9,\
iso_ir_111,koi8_r,koi8_ru,koi8_u,koi8_uni,ucs_2,ucs_2_internal,\
ucs_2be,ucs_2le,ucs_4,ucs_4_internal,ucs_4be,ucs_4le,us_ascii,\
utf_16,utf_16be,utf_16le,utf_8,win_1250,win_1251,win_1252,\
win_1253,win_1254,win_1255,win_1256,win_1257,win_1258 \
--enable-threads \
--disable-plugin \
--enable-languages="c"
/users/joel/test-gcc/b-m32c-rtems4.11-gcc/./gcc/xgcc
-B/users/joel/test-gcc/b-m32c-rtems4.11-gcc/./gcc/ -nostdinc
-B/users/joel/test-gcc/b-m32c-rtems4.11-gcc/m32c-rtems4.11/newlib/ -isystem
/users/joel/test-gcc/b-m32c-rtems4.11-gcc/m32c-rtems4.11/newlib/targ-include
-isystem /users/joel/test-gcc/gcc/newlib/libc/include
-B/users/joel/test-gcc/install-head/m32c-rtems4.11/bin/
-B/users/joel/test-gcc/install-head/m32c-rtems4.11/lib/ -isystem
/users/joel/test-gcc/install-head/m32c-rtems4.11/include -isystem
/users/joel/test-gcc/install-head/m32c-rtems4.11/sys-include -g -O2
-mcpu=m32cm -O2 -I../../../../gcc/libgcc/../newlib/libc/sys/rtems/include -g
-O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition -isystem ./include -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -Dinhibit_libc -I. -I. -I../../.././gcc
-I../../../../gcc/libgcc -I../../../../gcc/libgcc/.
-I../../../../gcc/libgcc/../gcc -I../../../../gcc/libgcc/../include
-DHAVE_CC_TLS -DUSE_EMUTLS -o _ffssi2.o -MT _ffssi2.o -MD -MP -MF _ffssi2.dep
-DL_ffssi2 -c ../../../../gcc/libgcc/libgcc2.c -fvisibility=hidden
-DHIDE_EXPORTS
../../../../gcc/libgcc/libgcc2.c: In function '__ffssi2':
../../../../gcc/libgcc/libgcc2.c:522:1: error: unable to find a register to
spill in class 'A_REGS'
}
^
../../../../gcc/libgcc/libgcc2.c:522:1: error: this is the insn:
(insn 62 60 63 10 (set (reg:HI 0 r0 [49])
(zero_extend:HI (mem/u/j:QI (plus:PSI (subreg:PSI (reg:SI 45 [ D.2964
]) 0)
(symbol_ref:PSI ("__clz_tab") [flags 0x40] <var_decl
0x7f5d80ddcc78 __clz_tab>)) [0 __clz_tab S1 A8])))
../../../../gcc/libgcc/libgcc2.c:520 115 {zero_extendqihi2}
(expr_list:REG_DEAD (reg:SI 45 [ D.2964 ])
(nil)))
../../../../gcc/libgcc/libgcc2.c:522: confused by earlier errors, bailing out
make[4]: *** [_ffssi2.o] Error 1
