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* [Bug target/39787] New: ICE with #pragma GCC target
@ 2009-04-16 19:26 jakub at gcc dot gnu dot org
2009-04-21 17:22 ` [Bug target/39787] " pinskia at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-04-16 19:26 UTC (permalink / raw)
To: gcc-bugs
#include <immintrin.h>
#pragma GCC target ("no-avx")
__m256d a, b, c;
__m128d d, e, f;
void __attribute__ ((__target__ ("avx"), __noinline__))
avx_routine (void)
{
a = _mm256_andnot_pd (b, c);
}
void __attribute__ ((__target__ ("sse3"), __noinline__))
sse3_routine (void)
{
d = _mm_andnot_pd (d, e);
}
ICEs when compiled with -O2 -mavx:
include/avxintrin.h: In function 'avx_routine':
include/avxintrin.h:155: error: '__builtin_ia32_andnpd256' needs unknown isa
option
include/avxintrin.h:155: internal compiler error: in emit_move_insn, at
expr.c:3405
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
One issue is the unknown ISA option which can be cured by:
--- i386.c.jj22009-04-14 16:33:49.000000000 +0200
+++ i386.c2009-04-16 20:47:05.000000000 +0200
@@ -2350,6 +2350,7 @@ ix86_target_string (int isa, int flags,
static struct ix86_target_opts isa_opts[] =
{
{ "-m64",OPTION_MASK_ISA_64BIT },
+ { "-mavx",OPTION_MASK_ISA_AVX },
{ "-msse5",OPTION_MASK_ISA_SSE5 },
{ "-msse4a",OPTION_MASK_ISA_SSE4A },
{ "-msse4.2",OPTION_MASK_ISA_SSE4_2 },
@@ -2365,6 +2366,7 @@ ix86_target_string (int isa, int flags,
{ "-mpopcnt",OPTION_MASK_ISA_POPCNT },
{ "-maes",OPTION_MASK_ISA_AES },
{ "-mpclmul",OPTION_MASK_ISA_PCLMUL },
+ { "-mfma",OPTION_MASK_ISA_FMA }
};
/* Flag options. */
But the worse problem is that ix86_valid_target_attribute_tree when the new
ix86_isa_flags is the same as def->ix86_isa_flags will just return NULL, which
means ix86_isa_flags won't be restored to the state with -mavx enabled when
switching to the avx_routine function.
I get a different ICE with:
-void __attribute__ ((__target__ ("avx"), __noinline__))
+void __attribute__ ((__target__ ("tune=core2", "avx"), __noinline__))
change on the testcase, this time without any reported error.
--
Summary: ICE with #pragma GCC target
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jakub at gcc dot gnu dot org
GCC target triplet: x86_64-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/39787] ICE with #pragma GCC target
2009-04-16 19:26 [Bug target/39787] New: ICE with #pragma GCC target jakub at gcc dot gnu dot org
@ 2009-04-21 17:22 ` pinskia at gcc dot gnu dot org
2009-04-21 17:43 ` pinskia at gcc dot gnu dot org
2009-08-31 20:02 ` dbaron at dbaron dot org
2 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-04-21 17:22 UTC (permalink / raw)
To: gcc-bugs
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------- Comment #1 from pinskia at gcc dot gnu dot org 2009-04-21 17:22 -------
It also ICEs at -O0 on the trunk:
Either:
t.c: In function avx_routine:
t.c:11: internal compiler error: in emit_move_insn, at expr.c:3386
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
OR:
t.c: In function avx_routine:
t.c:11: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/39787] ICE with #pragma GCC target
2009-04-16 19:26 [Bug target/39787] New: ICE with #pragma GCC target jakub at gcc dot gnu dot org
2009-04-21 17:22 ` [Bug target/39787] " pinskia at gcc dot gnu dot org
@ 2009-04-21 17:43 ` pinskia at gcc dot gnu dot org
2009-08-31 20:02 ` dbaron at dbaron dot org
2 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-04-21 17:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2009-04-21 17:42 -------
Here is one reduced testcase (an seg fault);
typedef double __m256d __attribute__ ((__vector_size__ (32) ));
static inline __m256d __attribute__((__always_inline__)) c(){}
#pragma GCC target ("no-avx")
__m256d a, b;
void avx_routine (void) { a = c();}
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-04-21 17:42:41
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/39787] ICE with #pragma GCC target
2009-04-16 19:26 [Bug target/39787] New: ICE with #pragma GCC target jakub at gcc dot gnu dot org
2009-04-21 17:22 ` [Bug target/39787] " pinskia at gcc dot gnu dot org
2009-04-21 17:43 ` pinskia at gcc dot gnu dot org
@ 2009-08-31 20:02 ` dbaron at dbaron dot org
2 siblings, 0 replies; 7+ messages in thread
From: dbaron at dbaron dot org @ 2009-08-31 20:02 UTC (permalink / raw)
To: gcc-bugs
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------- Comment #3 from dbaron at dbaron dot org 2009-08-31 20:01 -------
Created an attachment (id=18458)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18458&action=view)
another testcase
Here's another testcase that I just simplified from my attempts to use, in
Mozilla, some SSE2 code with runtime detection using CPUID. (See
https://bugzilla.mozilla.org/show_bug.cgi?id=506430 and
https://bugzilla.mozilla.org/show_bug.cgi?id=513422 .)
I'd simplified this testcase before discovering the existing bug report.
When I compile this testcase with:
/usr/local/gcc-4.4.1/bin/gcc -mno-sse2 ice.c
I get:
ice.c: In function âConvert_ascii_runâ:
ice.c:11: internal compiler error: in emit_move_insn, at expr.c:3405
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39787
^ permalink raw reply [flat|nested] 7+ messages in thread
[parent not found: <bug-39787-4@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2024-03-26 8:06 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-04-16 19:26 [Bug target/39787] New: ICE with #pragma GCC target jakub at gcc dot gnu dot org
2009-04-21 17:22 ` [Bug target/39787] " pinskia at gcc dot gnu dot org
2009-04-21 17:43 ` pinskia at gcc dot gnu dot org
2009-08-31 20:02 ` dbaron at dbaron dot org
[not found] <bug-39787-4@http.gcc.gnu.org/bugzilla/>
2021-08-09 6:08 ` pinskia at gcc dot gnu.org
2021-11-29 6:47 ` pinskia at gcc dot gnu.org
2024-03-26 8:06 ` pinskia at gcc dot gnu.org
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