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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/64688] [5 Regression] internal compiler error: Max. number of generated reload insns per insn is achieved (90)
Date: Sun, 25 Jan 2015 16:00:00 -0000 [thread overview]
Message-ID: <bug-64688-4-cWmY5qYBZl@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-64688-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64688
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ra
Status|REOPENED |NEW
Component|target |rtl-optimization
--- Comment #12 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Markus Trippelsdorf from comment #11)
> Created attachment 34566 [details]
> reduced testcase
>
> trippels@gcc20 % g++ -c -O3 -std=c++11 -march=westmere performance.ii
> performance.ii: In function ‘void performance_testtest_method()’:
> performance.ii:133:1: internal compiler error: Max. number of generated
> reload insns per insn is achieved (90)
Happens when trying to reload for:
(insn 73 72 393 2 (set (reg:V4SI 304)
(vec_merge:V4SI (vec_duplicate:V4SI (subreg:SI (reg:QI 103 [ SR.27 ])
0))
(const_vector:V4SI [
(const_int 0 [0])
(const_int 0 [0])
(const_int 0 [0])
(const_int 0 [0])
])
(const_int 1 [0x1]))) 2460 {vec_setv4si_0}
(nil))
Reload goes into infinite loop here.
Changing pseudo 103 in operand 2 of insn 73 on equiv 0
Creating newreg=359, assigning class ALL_REGS to subreg reg r359
73: r304:V4SI=vec_merge(vec_duplicate(r359:QI#0),const_vector,0x1)
Inserting subreg reload before:
502: r359:QI=0
2 Non pseudo reload: reject++
alt=0,overall=1,losers=0,rld_nregs=0
Choosing alt 0 in insn 73: (0) =Yr (1) C (2) Yr {vec_setv4si_0}
Change to class NO_REX_SSE_REGS for r359
0 Non input pseudo reload: reject++
1 Non-pseudo reload: reject+=2
1 Non input pseudo reload: reject++
alt=0,overall=16,losers=2,rld_nregs=2
0 Non input pseudo reload: reject++
alt=1,overall=7,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non-pseudo reload: reject+=2
1 Non input pseudo reload: reject++
alt=2,overall=16,losers=2 -- refuse
0 Non input pseudo reload: reject++
1 Non-pseudo reload: reject+=2
1 Non input pseudo reload: reject++
alt=3,overall=16,losers=2 -- refuse
0 Non input pseudo reload: reject++
alt=4,overall=7,losers=1,rld_nregs=1
Staticly defined alt reject+=6
0 Non input pseudo reload: reject++
alt=5,overall=13,losers=1 -- refuse
0 Non input pseudo reload: reject++
alt=6,overall=7,losers=1,rld_nregs=0
alt=7: Bad operand -- refuse
alt=8: Bad operand -- refuse
0 Non input pseudo reload: reject++
alt=9: Bad operand -- refuse
Choosing alt 6 in insn 502: (0) m (1) qn {*movqi_internal}
Creating newreg=360 from oldreg=359, assigning class NO_REGS to r360
502: r360:QI=0
Inserting insn reload after:
503: r359:QI=r360:QI
0 Non input pseudo reload: reject++
alt=0,overall=13,losers=2,rld_nregs=2
0 Non input pseudo reload: reject++
alt=1,overall=13,losers=2,rld_nregs=2
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=2,overall=8,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
alt=3,overall=13,losers=2 -- refuse
0 Non input pseudo reload: reject++
alt=4,overall=13,losers=2 -- refuse
Staticly defined alt reject+=6
0 Non input pseudo reload: reject++
alt=5,overall=13,losers=1 -- refuse
0 Non input pseudo reload: reject++
alt=6,overall=13,losers=2 -- refuse
alt=7: Bad operand -- refuse
alt=8: Bad operand -- refuse
0 Non input pseudo reload: reject++
alt=9: Bad operand -- refuse
Choosing alt 2 in insn 503: (0) q (1) qm {*movqi_internal}
Creating newreg=361 from oldreg=359, assigning class GENERAL_REGS to r361
503: r361:QI=r360:QI
Inserting insn reload after:
504: r359:QI=r361:QI
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=0,overall=608,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=1,overall=608,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=2,overall=608,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=3,overall=608,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=4,overall=608,losers=1,rld_nregs=1
Staticly defined alt reject+=6
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=5,overall=614,losers=1,rld_nregs=1
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
alt=6,overall=8,losers=1,rld_nregs=0
alt=7: Bad operand -- refuse
alt=8: Bad operand -- refuse
0 Non input pseudo reload: reject++
alt=9: Bad operand -- refuse
Choosing alt 6 in insn 504: (0) m (1) qn {*movqi_internal}
Creating newreg=362 from oldreg=359, assigning class NO_REGS to r362
...
This is a new problem and does not look like target problem to me.
Recategorizing back to RA problem.
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From: "antony at cosmologist dot info" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/64787] New: Invalid code on sourced allocation of class(*) character string
Date: Sun, 25 Jan 2015 16:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd787
Bug ID: 64787
Summary: Invalid code on sourced allocation of class(*)
character string
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: antony at cosmologist dot info
On trunk
module X
contains
subroutine AddCopy(C)
class(*), intent(in) :: C
class(*), pointer :: P
allocate(P, source=C)
end subroutine
end module X
program test
use X
call AddCopy('test string')
end program test
compiles, but when compiled with -O3 this always gives me a Seg Fault when run
(and probably invalid code more generally).
It may be related to
https://gcc.gnu.org/bugzilla/show_bug.cgi?idd692
https://gcc.gnu.org/bugzilla/show_bug.cgi?idD672
next prev parent reply other threads:[~2015-01-25 16:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 12:34 [Bug target/64688] New: " trippels at gcc dot gnu.org
2015-01-20 16:50 ` [Bug target/64688] [5 Regression] " jakub at gcc dot gnu.org
2015-01-21 20:52 ` vmakarov at gcc dot gnu.org
2015-01-22 8:09 ` ubizjak at gmail dot com
2015-01-22 14:45 ` uros at gcc dot gnu.org
2015-01-22 20:26 ` uros at gcc dot gnu.org
2015-01-23 23:05 ` jakub at gcc dot gnu.org
2015-01-24 10:31 ` trippels at gcc dot gnu.org
2015-01-24 10:40 ` trippels at gcc dot gnu.org
2015-01-24 10:42 ` ubizjak at gmail dot com
2015-01-24 14:40 ` trippels at gcc dot gnu.org
2015-01-25 16:00 ` ubizjak at gmail dot com [this message]
2015-01-30 22:23 ` [Bug rtl-optimization/64688] [4.9/5 " vmakarov at gcc dot gnu.org
2015-01-31 2:48 ` law at redhat dot com
2015-01-31 7:18 ` trippels at gcc dot gnu.org
2015-01-31 8:53 ` [Bug rtl-optimization/64688] [4.9 " jakub at gcc dot gnu.org
2015-02-03 16:31 ` law at redhat dot com
2015-02-04 18:26 ` vmakarov at gcc dot gnu.org
2015-03-27 20:13 ` vmakarov at gcc dot gnu.org
2015-04-22 12:02 ` jakub at gcc dot gnu.org
2015-04-22 12:22 ` ubizjak at gmail dot com
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