Hi,
@Andrew: Could you have a look at these? I had a quick look at 17f.c and it
looks to me like the target selectors aren't specific enough. Unfortunately I
am not familiar enough with target selectors (or targets for that matter) for
x86_64. From what I could tell with -m32 gcc decides to unroll the vectorized
loop so you end up with 4 simdclones rather than the 2 it tests for, GCC
probably uses a different cost structure for -m32 that decides it is profitable
to unroll?
As for -march=cascadelake, that seems to prevent gcc from using the inbranch
simdclones altogether, so I suspect that cascadelake doesn't support these
inbranch simdclones or the vector types it is trying to use.
Kind regards,
Andre
________________________________________
From: haochen.jiang <haoch...@ecsmtp.sh.intel.com>
Sent: Thursday, April 13, 2023 2:48 AM
To: Andre Simoes Dias Vieira; gcc-regress...@gcc.gnu.org;
gcc-patches@gcc.gnu.org; haochen.ji...@intel.com
Subject: [r13-7135 Regression] FAIL: gcc.dg/vect/vect-simd-clone-18f.c
scan-tree-dump-times vect "[\\n\\r] [^\\n]* = foo\\.simdclone" 2 on Linux/x86_64
On Linux/x86_64,
58c8c1b383bc3c286d6527fc6e8fb62463f9a877 is the first bad commit
commit 58c8c1b383bc3c286d6527fc6e8fb62463f9a877
Author: Andre Vieira <andre.simoesdiasvie...@arm.com>
Date: Tue Apr 11 10:07:43 2023 +0100
if-conv: Restore MASK_CALL conversion [PR108888]
caused
FAIL: gcc.dg/vect/vect-simd-clone-16e.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 3
FAIL: gcc.dg/vect/vect-simd-clone-16f.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 2
FAIL: gcc.dg/vect/vect-simd-clone-17e.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 3
FAIL: gcc.dg/vect/vect-simd-clone-17f.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 2
FAIL: gcc.dg/vect/vect-simd-clone-18e.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 3
FAIL: gcc.dg/vect/vect-simd-clone-18f.c scan-tree-dump-times vect "[\\n\\r]
[^\\n]* = foo\\.simdclone" 2
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-7135/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="vect.exp=gcc.dg/vect/vect-simd-clone-16e.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-16e.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-16f.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-16f.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-17e.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-17e.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-17f.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-17f.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-18e.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-18e.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-18f.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-simd-clone-18f.c
--target_board='unix{-m32\ -march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me
at haochen dot jiang at intel.com)
