https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105744
Bug ID: 105744
Summary: [11/12/13 Regression] wrong code with
-fexpensive-optimizations -flive-range-shrinkage on
powerpc64le-unknown-linux-gnu
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Created attachment 53040
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53040&action=edit
reduced testcase
Output:
$ powerpc64le-unknown-linux-gnu-gcc -fexpensive-optimizations
-flive-range-shrinkage testcase.c -static
$ qemu-ppc64le -- ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
(gdb) p/x a
$5 = {0x0, 0x0, 0x0, 0x0}
(gdb) p/x b
$6 = {0x0, 0x0, 0x0, 0x0}
(gdb) p/x c
$7 = {0xffff00, 0x0, 0x0, 0x0}
(gdb) p/x d
$8 = {0x0, 0x0, 0x0, 0x0}
(gdb) p/x e
$9 = {0x0, 0x0, 0x0, 0x0}
(gdb) p/x u
$10 = {0x1 <repeats 32 times>}
$ powerpc64le-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-powerpc64le/bin/powerpc64le-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r13-771-20220526001630-g3dff965cae6-checking-yes-rtl-df-extra-powerpc64le/bin/../libexec/gcc/powerpc64le-unknown-linux-gnu/13.0.0/lto-wrapper
Target: powerpc64le-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/powerpc64le-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=powerpc64le-unknown-linux-gnu
--with-ld=/usr/bin/powerpc64le-unknown-linux-gnu-ld
--with-as=/usr/bin/powerpc64le-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r13-771-20220526001630-g3dff965cae6-checking-yes-rtl-df-extra-powerpc64le
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20220526 (experimental) (GCC)
