On Linux/x86_64,
8a1346f379a15dc8b79e50656dc5d8728336231c is the first bad commit
commit 8a1346f379a15dc8b79e50656dc5d8728336231c
Author: H.J. Lu <[email protected]>
Date: Mon Jul 13 09:12:13 2026 +0800
x86-64: Add missing SSE and AVX zero-extend patterns
caused
FAIL: gcc.target/i386/zext-sse-1.c check-function-bodies func1
FAIL: gcc.target/i386/zext-sse-1.c check-function-bodies func2
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-2407/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/zext-sse-1.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/zext-sse-1.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.)
