https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118754
Bug ID: 118754
Summary: [15 Regression] FAIL: gcc.target/i386/pr106010-8c.c by
r15-6807-g68326d5d1a593d
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: acoplan at gcc dot gnu.org
Blocks: 118753, 118211
Target Milestone: ---
On x86-64, r15-6807-g68326d5d1a593d caused:
FAIL: gcc.dg/tree-ssa/predcom-8.c scan-tree-dump-not pcom "Invalid sum"
FAIL: gcc.dg/vect/vect-tail-nomask-1.c -flto -ffat-lto-objects
scan-tree-dump-times vect "LOOP VECTORIZED" 2
FAIL: gcc.dg/vect/vect-tail-nomask-1.c scan-tree-dump-times vect "LOOP
VECTORIZED" 2
FAIL: gcc.target/i386/pr106010-8c.c scan-tree-dump-times vect "(?n)add new
stmt:.*MEM <vector\\(16\\) _Float16>" 1
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-6807/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="tree-ssa.exp=gcc.dg/tree-ssa/predcom-8.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/predcom-8.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-tail-nomask-1.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-tail-nomask-1.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-tail-nomask-1.c
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-tail-nomask-1.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr106010-8c.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr106010-8c.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr106010-8c.c
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr106010-8c.c --target_board='unix{-m64\
-march=cascadelake}'"
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118211
[Bug 118211] tree-vectorize: vectorize input.cc, find_end_of_line
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118753
[Bug 118753] [15 Regression] [meta-bug] GCC 15 Regression on x86
