https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96298
Bug ID: 96298
Summary: [11 Regression] wrong code with -O -fno-tree-forwprop
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: powerpc64-unknown-linux-gnu
Created attachment 48920
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48920&action=edit
reduced testcase
Multiple targets are failing this testcase; x86_64-pc-linux-gnu doesn't fail.
$ powerpc64-unknown-linux-gnu-gcc -O -fno-tree-forwprop testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ powerpc64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-powerpc64/bin/powerpc64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-2284-20200723104325-g02cada26e47-checking-yes-rtl-df-extra-powerpc64/bin/../libexec/gcc/powerpc64-unknown-linux-gnu/11.0.0/lto-wrapper
Target: powerpc64-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/powerpc64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=powerpc64-unknown-linux-gnu
--with-ld=/usr/bin/powerpc64-unknown-linux-gnu-ld
--with-as=/usr/bin/powerpc64-unknown-linux-gnu-as --disable-multilib
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r11-2284-20200723104325-g02cada26e47-checking-yes-rtl-df-extra-powerpc64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.0.0 20200723 (experimental) (GCC)
