On Mon, Aug 24, 2026 at 7:41 PM Haochen Jiang <[email protected]> wrote:
>
> On Linux/x86_64,
>
> b8c1b044a4b2884577d3094513a25abcef1161ee is the first bad commit
> commit b8c1b044a4b2884577d3094513a25abcef1161ee
> Author: H.J. Lu <[email protected]>
> Date: Mon Aug 24 08:08:06 2026 +0800
>
> Scan both movaps and vmovdqa in SSE4.1 STV tests
>
> caused
>
> FAIL: gcc.target/i386/sse4_1-stv-11.c scan-assembler-times (movaps|vmovdqa) 4
> FAIL: gcc.target/i386/sse4_1-stv-12.c scan-assembler-times (movaps|vmovdqa) 4
These tests failed before my patch.
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-3570/usr
> --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
> --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
> --enable-libmpx x86_64-linux --disable-bootstrap
>
> To reproduce:
>
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="i386.exp=gcc.target/i386/sse4_1-stv-11.c
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="i386.exp=gcc.target/i386/sse4_1-stv-12.c
> --target_board='unix{-m64\ -march=cascadelake}'"
>
> (Please directly reply to this email for question about this report.)
> (If you met problems with cascadelake related, disabling AVX512F in command
> line might save that.)
> (However, please make sure that there is no potential problems with AVX512.)
--
H.J.
