Bug#1051772: Fwd: ia64 generates wrong-code with LTO

[Mathieu Malaterre <malat@debian.org>]

Package: gcc-13
Version: 13.2.0-3

highway does not seem to work on ia64 with LTO (see #1051769).

On yttrium with gcc-13:

% /usr/bin/g++-13 -g -O2 -ffile-prefix-map=/home/malat/highway-1.0.7=.
-flto=auto -ffat-lto-objects -specs=/usr/share/dpkg/pie-compile.specs
-Wformat -Werror=format-security -DHWY_BROKEN_EMU128=0 -Wdate-time
-D_FORTIFY_SOURCE=2 -flto=auto -ffat-lto-objects
-specs=/usr/share/dpkg/pie-link.specs -fPIE -pie
CMakeFiles/copy_test.dir/hwy/contrib/algo/copy_test.cc.o -o
tests/copy_test
-Wl,-rpath,/home/malat/highway-1.0.7/obj-ia64-linux-gnu
libhwy_test.so.1.0.7 libhwy_contrib.so.1.0.7
/usr/lib/ia64-linux-gnu/libgtest.a
/usr/lib/ia64-linux-gnu/libgtest_main.a libhwy.so.1.0.7
/usr/lib/ia64-linux-gnu/libgtest.a

% gdb ./tests/copy_test
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Reading symbols from ./tests/copy_test...
(gdb) r
Starting program: /home/malat/highway-1.0.7/obj-ia64-linux-gnu/tests/copy_test
Failed to read a valid object file image from memory.
Running main() from ./googletest/src/gtest_main.cc

Program received signal SIGSEGV, Segmentation fault.
zsh: abort      gdb ./tests/copy_test