https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365
Tiezhu Yang <yangtiezhu at loongson dot cn> changed:
What |Removed |Added
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CC| |yangtiezhu at loongson dot cn
--- Comment #13 from Tiezhu Yang <yangtiezhu at loongson dot cn> ---
There is a workaround for this bug in the Linux kernel
header include/linux/compiler-gcc.h after the kernel
commit 173a3efd3edb ("bug.h: work around GCC PR82365 in BUG()")
in the year of 2018:
#define barrier_before_unreachable() asm volatile("")
Is it possible to fix this bug in the GCC and remove the
workaround in the Linux kernel? Otherwise there is a new
issue about objtool warning "unreachable instruction" if
compiled with -Os rather than the default -O2.
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/compiler-gcc.h#n46
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=173a3efd3edb
[3]
https://lore.kernel.org/loongarch/[email protected]/
