> On Mar 26, 2019, at 12:22 AM, Vladimir Makarov <vmaka...@redhat.com> wrote:
>
> Jeff Law recently found that my latest patch break some existing code
> compilation (the code is big to make test out of it).
>
> Here is the patch to fix it. The patch was successfully bootstrapped on
> x86-64. The patch actually results in less new transformations the previous
> patch introduced. So it should be safe.
>
> Committed as rev. 269924.
Hi Vladimir,
FWIW, this fixed linux kernel builds on AArch64 and ARM, which your first patch
caused.
The failure was:
===
slub.s: Assembler messages:
slub.s:26: Error: reg pair must start from even reg at operand 1 -- `casp
x1,x0,x3,x5,[x6]'
===
from a reduced testcase:
===
void *a;
long b, c;
void d(void) {
typeof(0) e=0;
asm(" casp\t%[old1], %[old2], %[new1], %[new2], %[v]\n"
: [old1] "+&r"(b), [old2] "+&r"(c), [v] "+Q"(a)
: [new1] "r"(d), [new2] "r"(e));
}
===
Is this the same bug that Jeff reported?
Thanks,
--
Maxim Kuvyrkov
www.linaro.org
