On Linux/x86_64,
f4afefbbbee1414e130ca2f1552216bb702a985c is the first bad commit
commit f4afefbbbee1414e130ca2f1552216bb702a985c
Author: Roger Sayle <[email protected]>
Date: Tue Oct 21 13:14:58 2025 +0100
x86_64: Start TImode STV chains from zero-extension or *concatditi.
caused
FAIL: gcc.target/i386/sse4_1-stv-10.c scan-assembler-times movaps 4
FAIL: gcc.target/i386/sse4_1-stv-11.c scan-assembler-times movaps 4
FAIL: gcc.target/i386/sse4_1-stv-12.c scan-assembler-times movaps 4
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-4539/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-10.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ 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.)
