https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120507
Bug ID: 120507
Summary: ICE: in extract_insn, at recog.cc:2882 (unrecognizable
insn) with -mgeneral-regs-only -mfloat-abi=softfp
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Compiler output:
$ echo 'void foo(float f) {}' |
/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
-mgeneral-regs-only -mfloat-abi=softfp -xc -
<stdin>: In function 'foo':
<stdin>:1:20: error: unrecognizable insn:
(insn 2 4 3 2 (set (mem/c:SF (plus:SI (reg/f:SI 89 virtual-stack-vars)
(const_int -4 [0xfffffffffffffffc])) [1 f+0 S4 A32])
(reg:SF 0 r0 [ f ])) "<stdin>":1:19 -1
(nil))
during RTL pass: vregs
<stdin>:1:20: internal compiler error: in extract_insn, at recog.cc:2882
0x22d8d41 internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:517
0xaa9eeb fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostic.cc:1803
0x7ccf02 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.cc:108
0x7ccf7f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.cc:116
0x7bdb72 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.cc:2882
0xe2911f instantiate_virtual_regs_in_insn
/repo/gcc-trunk/gcc/function.cc:1609
0xe2911f instantiate_virtual_regs
/repo/gcc-trunk/gcc/function.cc:1987
0xe2911f execute
/repo/gcc-trunk/gcc/function.cc:2034
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20250602084730-r16-1047-gb0dc2324980bbb-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/16.0.0/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--enable-libsanitizer --with-float=hard --with-fpu=vfpv4 --with-arch=armv7-a
--with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20250602084730-r16-1047-gb0dc2324980bbb-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20250602 (experimental) (GCC)
