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* [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm
@ 2012-11-28 9:25 jakub at gcc dot gnu.org
2012-11-28 9:26 ` [Bug rtl-optimization/55512] " jakub at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-28 9:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
Bug #: 55512
Summary: [4.8 Regression] Various LRA ICEs with inline-asm
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Keywords: error-recovery
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jakub@gcc.gnu.org
CC: vmakarov@gcc.gnu.org
#ifndef TEST
#define TEST 0
#endif
#if (TEST & 1)
#define __builtin_unreachable() do { } while (0)
#endif
#if (TEST & 2) == 0
int
foo (int x)
{
asm goto ("" : : "r" (x), "r" (x + 1), "r" (x + 2), "r" (x + 3),
"r" (x + 4), "r" (x + 5), "r" (x + 6), "r" (x + 7),
"r" (x + 8), "r" (x + 9), "r" (x + 10), "r" (x + 11),
"r" (x + 12), "r" (x + 13), "r" (x + 14), "r" (x + 15) : : lab);
__builtin_unreachable ();
lab:
return 0;
}
#endif
#if (TEST & 2)
int
bar (int x)
{
asm goto ("" : : "r" (x), "r" (x + 1), "r" (x + 2), "r" (x + 3),
"r" (x + 4), "r" (x + 5), "r" (x + 6), "r" (x + 7),
"r" (x + 8), "r" (x + 9), "r" (x + 10), "r" (x + 11),
"r" (x + 12), "r" (x + 13), "r" (x + 14), "r" (x + 15),
"r" (x + 16) : : lab);
__builtin_unreachable ();
lab:
return 0;
}
#endif
shows 3 different ICEs on x86_64-linux with -O3. In 4.7 I get:
for i in `seq 0 3`; do echo ===$i===; LC_ALL=C gcc -S -O2 -DTEST=$i
pr51106-3.c; done
===0===
pr51106-3.c: In function 'foo':
pr51106-3.c:13:3: error: can't find a register in class 'GENERAL_REGS' while
reloading 'asm'
pr51106-3.c:13:3: error: 'asm' operand has impossible constraints
===1===
pr51106-3.c: In function 'foo':
pr51106-3.c:13:3: error: can't find a register in class 'GENERAL_REGS' while
reloading 'asm'
pr51106-3.c:13:3: error: 'asm' operand has impossible constraints
===2===
pr51106-3.c: In function 'bar':
pr51106-3.c:27:3: error: can't find a register in class 'GENERAL_REGS' while
reloading 'asm'
pr51106-3.c:27:3: error: 'asm' operand has impossible constraints
===3===
pr51106-3.c: In function 'bar':
pr51106-3.c:27:3: error: can't find a register in class 'GENERAL_REGS' while
reloading 'asm'
pr51106-3.c:27:3: error: 'asm' operand has impossible constraints
but with the trunk:
for i in `seq 0 3`; do echo ===$i===; LC_ALL=C ./xgcc -B ./ -S -O2 -DTEST=$i
pr51106-3.c; done
===0===
pr51106-3.c: In function 'foo':
pr51106-3.c:20:1: internal compiler error: Maximum number of LRA constraint
passes is achieved (15)
}
^
0x8fd167 lra_constraints(bool)
../../gcc/lra-constraints.c:3315
0x8eda2e lra(_IO_FILE*)
../../gcc/lra.c:2277
0x8a33e4 do_reload
../../gcc/ira.c:4624
0x8a35f2 rest_of_handle_reload
../../gcc/ira.c:4737
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
===1===
pr51106-3.c: In function 'foo':
pr51106-3.c:20:1: internal compiler error: Maximum number of LRA constraint
passes is achieved (15)
}
^
0x8fd167 lra_constraints(bool)
../../gcc/lra-constraints.c:3315
0x8eda2e lra(_IO_FILE*)
../../gcc/lra.c:2277
0x8a33e4 do_reload
../../gcc/ira.c:4624
0x8a35f2 rest_of_handle_reload
../../gcc/ira.c:4737
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
===2===
pr51106-3.c: In function 'bar':
pr51106-3.c:27:3: error: 'asm' operand has impossible constraints
asm goto ("" : : "r" (x), "r" (x + 1), "r" (x + 2), "r" (x + 3),
^
pr51106-3.c:35:1: error: unrecognizable insn:
}
^
(jump_insn 22 74 37 2 (use (const_int 0 [0])) pr51106-3.c:27 -1
(nil)
-> 25)
pr51106-3.c:35:1: internal compiler error: in insn_default_length, at
config/i386/i386.md:1037
0x9d5ed3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.c:110
0x9d5f14 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/rtl-error.c:118
0xd4887f insn_default_length(rtx_def*)
../../gcc/config/i386/i386.md:1037
0x767c92 get_attr_length_1
../../gcc/final.c:405
0x767dae get_attr_length(rtx_def*)
../../gcc/final.c:437
0xd363d8 min_insn_size
../../gcc/config/i386/i386.c:35044
0xd3661c ix86_avoid_jump_mispredicts
../../gcc/config/i386/i386.c:35140
0xd36eba ix86_reorg
../../gcc/config/i386/i386.c:35367
0x9d5bc5 rest_of_handle_machine_reorg
../../gcc/reorg.c:3944
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
===3===
pr51106-3.c: In function 'bar':
pr51106-3.c:27:3: error: 'asm' operand has impossible constraints
asm goto ("" : : "r" (x), "r" (x + 1), "r" (x + 2), "r" (x + 3),
^
pr51106-3.c:35:1: internal compiler error: in fixup_reorder_chain, at
cfgrtl.c:3334
}
^
0x677755 fixup_reorder_chain
../../gcc/cfgrtl.c:3334
0x6789d5 cfg_layout_finalize()
../../gcc/cfgrtl.c:3811
0xf8047b rest_of_handle_reorder_blocks
../../gcc/bb-reorder.c:2225
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
@ 2012-11-28 9:26 ` jakub at gcc dot gnu.org
2012-11-28 9:34 ` pinskia at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-28 9:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
2012-11-28 9:26 ` [Bug rtl-optimization/55512] " jakub at gcc dot gnu.org
@ 2012-11-28 9:34 ` pinskia at gcc dot gnu.org
2012-11-28 9:35 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-11-28 9:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-28 09:33:32 UTC ---
I thought this was fixed with:
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg02271.html
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
2012-11-28 9:26 ` [Bug rtl-optimization/55512] " jakub at gcc dot gnu.org
2012-11-28 9:34 ` pinskia at gcc dot gnu.org
@ 2012-11-28 9:35 ` pinskia at gcc dot gnu.org
2012-11-28 17:43 ` vmakarov at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-11-28 9:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-11-28
Ever Confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-28 09:35:02 UTC ---
(In reply to comment #1)
> I thought this was fixed with:
> http://gcc.gnu.org/ml/gcc-patches/2012-11/msg02271.html
Or rather only partly. The unrecognizable insn part was introduced by that
change.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2012-11-28 9:35 ` pinskia at gcc dot gnu.org
@ 2012-11-28 17:43 ` vmakarov at gcc dot gnu.org
2012-11-29 8:33 ` jakub at gcc dot gnu.org
2012-11-29 8:38 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: vmakarov at gcc dot gnu.org @ 2012-11-28 17:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2012-11-28 17:42:50 UTC ---
Author: vmakarov
Date: Wed Nov 28 17:42:39 2012
New Revision: 193901
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193901
Log:
2012-11-28 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/55512
* lra-assigns.c (assign_by_spills): Assigned arbitrary hard regs
to failed reload pseudos instead of changing asm pattern.
* lra-constraints.c (MAX_CONSTRAINT_ITERATION_NUMBER): Increase
value.
2012-11-28 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/55512
* gcc.target/i386/pr55512-[1234].c: New tests.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr55512-1.c
trunk/gcc/testsuite/gcc.target/i386/pr55512-2.c
trunk/gcc/testsuite/gcc.target/i386/pr55512-3.c
trunk/gcc/testsuite/gcc.target/i386/pr55512-4.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-assigns.c
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
` (3 preceding siblings ...)
2012-11-28 17:43 ` vmakarov at gcc dot gnu.org
@ 2012-11-29 8:33 ` jakub at gcc dot gnu.org
2012-11-29 8:38 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-29 8:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-29 08:32:41 UTC ---
Author: jakub
Date: Thu Nov 29 08:32:32 2012
New Revision: 193923
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193923
Log:
PR rtl-optimization/55512
* gcc.target/i386/pr55512-2.c: Remove unnecessary define.
* gcc.target/i386/pr55512-4.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/pr55512-2.c
trunk/gcc/testsuite/gcc.target/i386/pr55512-4.c
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug rtl-optimization/55512] [4.8 Regression] Various LRA ICEs with inline-asm
2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
` (4 preceding siblings ...)
2012-11-29 8:33 ` jakub at gcc dot gnu.org
@ 2012-11-29 8:38 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-29 8:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55512
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-29 08:38:31 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
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2012-11-28 9:25 [Bug rtl-optimization/55512] New: [4.8 Regression] Various LRA ICEs with inline-asm jakub at gcc dot gnu.org
2012-11-28 9:26 ` [Bug rtl-optimization/55512] " jakub at gcc dot gnu.org
2012-11-28 9:34 ` pinskia at gcc dot gnu.org
2012-11-28 9:35 ` pinskia at gcc dot gnu.org
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