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* [Bug target/44180] New: [vect256] Wrong
@ 2010-05-17 23:13 hjl dot tools at gmail dot com
2010-05-17 23:48 ` [Bug target/44180] [vect256] Wrong vec_extract_evenv8sf and vec_extract_oddv8sf hjl at gcc dot gnu dot org
0 siblings, 1 reply; 5+ messages in thread
From: hjl dot tools at gmail dot com @ 2010-05-17 23:13 UTC (permalink / raw)
To: gcc-bugs
[hjl@gnu-6 gcc]$ cat z.c
#define N 16
float b[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
float a[N];
void
test (void)
{
int i;
for (i = 0; i < N/2; i++)
a[i] = b[2*i+1] * c[2*i+1];
}
[hjl@gnu-6 gcc]$ ./xgcc -B./ -O2 -ftree-vectorize -mavx -S z.c
[hjl@gnu-6 gcc]$ cat z.s
.file "z.c"
.text
.p2align 4,,15
.globl test
.type test, @function
test:
.LFB0:
.cfi_startproc
vxorps %xmm0, %xmm0, %xmm0
pushq %rbp
.cfi_def_cfa_offset 16
movq %rsp, %rbp
.cfi_offset 6, -16
.cfi_def_cfa_register 6
vmovaps %ymm0, a(%rip)
leave
.cfi_def_cfa 7, 8
ret
.cfi_endproc
The probem is "vec_extract_evenv8sf" and "vec_extract_oddv8sf" call
expand_vec_perm_even_odd_1 which calls expand_vselect and
expand_vec_perm_vpermil without checking return values. For V4SF,
those functions return false.
--
Summary: [vect256] Wrong
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl dot tools at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44180
^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <bug-44180-4@http.gcc.gnu.org/bugzilla/>]
* [Bug target/44180] [vect256] Wrong vec_extract_evenv8sf and vec_extract_oddv8sf
[not found] <bug-44180-4@http.gcc.gnu.org/bugzilla/>
@ 2010-10-13 21:20 ` hjl at gcc dot gnu.org
2010-10-14 2:12 ` hjl at gcc dot gnu.org
2010-10-14 2:13 ` hjl.tools at gmail dot com
2 siblings, 0 replies; 5+ messages in thread
From: hjl at gcc dot gnu.org @ 2010-10-13 21:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44180
--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-10-13 21:20:12 UTC ---
Author: hjl
Date: Wed Oct 13 21:20:07 2010
New Revision: 165436
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165436
Log:
Addd 256bit AVX vectorizer patterns.
2010-10-13 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/i386.c (ix86_build_const_vector): Check vector
mode instead of scalar mode.
(ix86_build_signbit_mask): Likewise.
(ix86_expand_fp_absneg_operator): Updated.
(ix86_expand_copysign): Likewise.
(ix86_expand_int_vcond): Likewise.
(ix86_emit_swdivsf): Likewise.
(ix86_sse_copysign_to_positive): Likewise.
(ix86_expand_sse_fabs): Likewise.
* config/i386/i386.md (fixuns_trunc<mode>si2): Likewise.
* config/i386/sse.md (copysign<mode>3): Likewise.
(sse2_cvtudq2ps): Likewise.
(vec_unpacku_float_hi_v4si): Likewise.
(vec_unpacku_float_lo_v4si): Likewise.
* config/i386/i386.c (ix86_builtins): Add
IX86_BUILTIN_CPYSGNPS256 and IX86_BUILTIN_CPYSGNPD256.
(bdesc_args): Likewise.
(ix86_builtin_vectorized_function): Support
IX86_BUILTIN_CPYSGNPS256, IX86_BUILTIN_CPYSGNPD256,
IX86_BUILTIN_SQRTPD256, IX86_BUILTIN_SQRTPS_NR256,
and IX86_BUILTIN_CVTPS2DQ256.
(ix86_builtin_reciprocal): Support IX86_BUILTIN_SQRTPS_NR256.
* config/i386/sse.md (STORENT_MODE): New.
(VEC_FLOAT_MODE): Likewise.
(VEC_EXTRACT_MODE): Likewise.
(*avx_cvtdq2pd256_2): Likewise.
(vec_pack_trunc_v4df): Likewise.
(vec_interleave_highv8sf): Likewise.
(vec_interleave_lowv8sf): Likewise.
(storent<mode>): Macroized.
(<code><mode>2: absneg): Likewise.
(copysign<mode>3): Likewise.
(vec_extract<mode>): Likewise.
PR target/44180
* config/i386/i386.c (expand_vec_perm_even_odd_1): Rewritten
for V8SFmode.
2010-10-13 Richard Guenther <rguenther@suse.de>
H.J. Lu <hongjiu.lu@intel.com>
* config/i386/sse.md (reduc_splus_v8sf): Add.
(reduc_splus_v4df): Likewise.
(vec_unpacks_hi_v8sf): Likewise.
(vec_unpacks_lo_v8sf): Likewise.
(*avx_cvtps2pd256_2): Likewise.
(vec_unpacks_float_hi_v8si): Likewise.
(vec_unpacks_float_lo_v8si): Likewise.
(vec_interleave_highv4df): Likewise.
(vec_interleave_lowv4df): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.md
trunk/gcc/config/i386/sse.md
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/44180] [vect256] Wrong vec_extract_evenv8sf and vec_extract_oddv8sf
[not found] <bug-44180-4@http.gcc.gnu.org/bugzilla/>
2010-10-13 21:20 ` hjl at gcc dot gnu.org
@ 2010-10-14 2:12 ` hjl at gcc dot gnu.org
2010-10-14 2:13 ` hjl.tools at gmail dot com
2 siblings, 0 replies; 5+ messages in thread
From: hjl at gcc dot gnu.org @ 2010-10-14 2:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44180
--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-10-14 02:12:03 UTC ---
Author: hjl
Date: Thu Oct 14 02:11:59 2010
New Revision: 165445
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165445
Log:
Add a testcase for PR target/44180.
2010-10-13 H.J. Lu <hongjiu.lu@intel.com>
PR target/44180
* gcc.target/i386/pr44180.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr44180.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/44180] [vect256] Wrong vec_extract_evenv8sf and vec_extract_oddv8sf
[not found] <bug-44180-4@http.gcc.gnu.org/bugzilla/>
2010-10-13 21:20 ` hjl at gcc dot gnu.org
2010-10-14 2:12 ` hjl at gcc dot gnu.org
@ 2010-10-14 2:13 ` hjl.tools at gmail dot com
2 siblings, 0 replies; 5+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-14 2:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44180
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Version|unknown |4.6.0
Resolution| |FIXED
Target Milestone|--- |4.6.0
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-14 02:13:28 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2010-05-17 23:13 [Bug target/44180] New: [vect256] Wrong hjl dot tools at gmail dot com
2010-05-17 23:48 ` [Bug target/44180] [vect256] Wrong vec_extract_evenv8sf and vec_extract_oddv8sf hjl at gcc dot gnu dot org
[not found] <bug-44180-4@http.gcc.gnu.org/bugzilla/>
2010-10-13 21:20 ` hjl at gcc dot gnu.org
2010-10-14 2:12 ` hjl at gcc dot gnu.org
2010-10-14 2:13 ` hjl.tools at gmail dot com
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