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* [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops @ 2014-11-28 21:16 zsojka at seznam dot cz 2014-11-29 14:07 ` [Bug target/64108] " hjl.tools at gmail dot com ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: zsojka at seznam dot cz @ 2014-11-28 21:16 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 Bug ID: 64108 Summary: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Created attachment 34134 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34134&action=edit preprocessed source (gcc.target/i386/memset-strategy-1.c) Compiler output: $ gcc -mmemset-strategy=libcall:-1:align -minline-all-stringops memset-strategy-1.i -wrapper valgrind,-q ==13391== Stack overflow in thread 1: can't grow stack to 0xffe001ff8 ==13391== Can't extend stack to 0xffe0010a8 during signal delivery for thread 1: ==13391== no stack segment ==13391== ==13391== Process terminating with default action of signal 11 (SIGSEGV) ==13391== Access not within mapped region at address 0xFFE0010A8 ==13391== at 0xF047D2: decide_alg(long, long, unsigned long, unsigned long, bool, bool, int*, bool*) (i386.c:24370) ==13391== If you believe this happened as a result of a stack ==13391== overflow in your program's main thread (unlikely but ==13391== possible), you can try to increase the size of the ==13391== main thread stack using the --main-stacksize= flag. ==13391== The main thread stack size used in this run was 16777216. ==13391== Stack overflow in thread 1: can't grow stack to 0xffe001f71 ==13391== ==13391== Process terminating with default action of signal 11 (SIGSEGV) ==13391== Access not within mapped region at address 0xFFE001F71 ==13391== at 0x4A236B0: _vgnU_freeres (in /usr/lib64/valgrind/vgpreload_core-amd64-linux.so) ==13391== If you believe this happened as a result of a stack ==13391== overflow in your program's main thread (unlikely but ==13391== possible), you can try to increase the size of the ==13391== main thread stack using the --main-stacksize= flag. ==13391== The main thread stack size used in this run was 16777216. gcc: internal compiler error: Segmentation fault (program valgrind) 0x40bff5 execute /mnt/svn/gcc-trunk/gcc/gcc.c:2912 0x40c289 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:4841 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 0x40d287 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5495 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 0x40d287 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5495 0x40c613 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5610 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 0x40d287 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5495 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 0x40d287 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5495 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 0x40d287 do_spec_1 /mnt/svn/gcc-trunk/gcc/gcc.c:5495 0x40e887 process_brace_body /mnt/svn/gcc-trunk/gcc/gcc.c:6124 0x40e887 handle_braces /mnt/svn/gcc-trunk/gcc/gcc.c:6038 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. Tested revisions: r218137 - ICE 4_9 r216937 - ICE ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz @ 2014-11-29 14:07 ` hjl.tools at gmail dot com 2014-12-02 14:11 ` hjl at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2014-11-29 14:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|5.0 |4.9.3 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz 2014-11-29 14:07 ` [Bug target/64108] " hjl.tools at gmail dot com @ 2014-12-02 14:11 ` hjl at gcc dot gnu.org 2014-12-04 5:13 ` zsojka at seznam dot cz ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: hjl at gcc dot gnu.org @ 2014-12-02 14:11 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 --- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Tue Dec 2 14:10:23 2014 New Revision: 218272 URL: https://gcc.gnu.org/viewcvs?rev=218272&root=gcc&view=rev Log: Stop only if there aren't any usable algorithms When searching for an usable algorithm with -minline-all-stringops, decide_alg stops when it sees libcall even if there is a usable algorithm. It goes into an infinite loop. This patch changes decide_alg to stop searching only if there aren't any usable algorithms. Testd on Linux/x86-64. gcc/ PR target/64108 * config/i386/i386.c (decide_alg): Stop only if there aren't any usable algorithms. gcc/testsuite/ PR target/64108 * gcc.target/i386/memset-strategy-2.c: New test. Added: trunk/gcc/testsuite/gcc.target/i386/memset-strategy-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz 2014-11-29 14:07 ` [Bug target/64108] " hjl.tools at gmail dot com 2014-12-02 14:11 ` hjl at gcc dot gnu.org @ 2014-12-04 5:13 ` zsojka at seznam dot cz 2014-12-05 11:53 ` hjl at gcc dot gnu.org 2014-12-05 12:05 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: zsojka at seznam dot cz @ 2014-12-04 5:13 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 --- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 34187 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34187&action=edit another autoreduced testcase (from gcc.c-torture/execute/20020412-1.c) Hello, I am getting another similiar ICE (-minline-stringops-dynamically is used it this case, different testcase): $ gcc -mmemcpy-strategy=libcall:-1:align -minline-stringops-dynamically final.i final.i: In function 'foo': final.i:10:5: internal compiler error: in decide_alg, at config/i386/i386.c:24506 d = ^ 0xf0f862 decide_alg /mnt/svn/gcc-trunk/gcc/config/i386/i386.c:24506 0xf5848f ix86_expand_set_or_movmem(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, bool) /mnt/svn/gcc-trunk/gcc/config/i386/i386.c:24759 0x106b68e gen_movmemdi(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*) /mnt/svn/gcc-trunk/gcc/config/i386/i386.md:15893 0xb18792 insn_gen_fn::operator()(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*) const /mnt/svn/gcc-trunk/gcc/recog.h:310 0xb18792 maybe_gen_insn(insn_code, unsigned int, expand_operand*) /mnt/svn/gcc-trunk/gcc/optabs.c:8395 0xb18da8 maybe_expand_insn(insn_code, unsigned int, expand_operand*) /mnt/svn/gcc-trunk/gcc/optabs.c:8407 0x8d8a3e emit_block_move_via_movmem /mnt/svn/gcc-trunk/gcc/expr.c:1330 0x8d8a3e emit_block_move_hints(rtx_def*, rtx_def*, rtx_def*, block_op_methods, unsigned int, long, unsigned long, unsigned long, unsigned long) /mnt/svn/gcc-trunk/gcc/expr.c:1148 0x797721 expand_builtin_memcpy_args /mnt/svn/gcc-trunk/gcc/builtins.c:3243 0x7a746c expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int) /mnt/svn/gcc-trunk/gcc/builtins.c:6288 0x8d45b6 expand_expr_real_1(tree_node*, rtx_def*, machine_mode, expand_modifier, rtx_def**, bool) /mnt/svn/gcc-trunk/gcc/expr.c:10471 0x7cb4c9 expand_expr /mnt/svn/gcc-trunk/gcc/expr.h:299 0x7cb4c9 expand_call_stmt /mnt/svn/gcc-trunk/gcc/cfgexpand.c:2347 0x7cbbff expand_gimple_stmt_1 /mnt/svn/gcc-trunk/gcc/cfgexpand.c:3293 0x7cbbff expand_gimple_stmt /mnt/svn/gcc-trunk/gcc/cfgexpand.c:3447 0x7d1193 expand_gimple_basic_block /mnt/svn/gcc-trunk/gcc/cfgexpand.c:5280 0x7d3686 execute /mnt/svn/gcc-trunk/gcc/cfgexpand.c:5889 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] 6+ messages in thread
* [Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz ` (2 preceding siblings ...) 2014-12-04 5:13 ` zsojka at seznam dot cz @ 2014-12-05 11:53 ` hjl at gcc dot gnu.org 2014-12-05 12:05 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: hjl at gcc dot gnu.org @ 2014-12-05 11:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 --- Comment #4 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Fri Dec 5 11:52:44 2014 New Revision: 218419 URL: https://gcc.gnu.org/viewcvs?rev=218419&root=gcc&view=rev Log: Stop only if there aren't any usable algorithms When searching for an usable algorithm with -minline-all-stringops, decide_alg stops when it sees libcall even if there is a usable algorithm. It goes into an infinite loop. This patch changes decide_alg to stop searching only if there aren't any usable algorithms. Testd on Linux/x86-64. gcc/ Backport from mainline PR target/64108 * config/i386/i386.c (decide_alg): Stop only if there aren't any usable algorithms. gcc/testsuite/ Backport from mainline PR target/64108 * gcc.target/i386/memset-strategy-2.c: New test. Added: branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/memset-strategy-2.c Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/config/i386/i386.c branches/gcc-4_9-branch/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/64108] ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz ` (3 preceding siblings ...) 2014-12-05 11:53 ` hjl at gcc dot gnu.org @ 2014-12-05 12:05 ` hjl.tools at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: hjl.tools at gmail dot com @ 2014-12-05 12:05 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64108 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> --- Fixed for 4.9.3 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-12-05 12:05 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-11-28 21:16 [Bug target/64108] New: ICE: SIGSEGV in decide_alg() with -mmemset-strategy=libcall:-1:align -minline-all-stringops zsojka at seznam dot cz 2014-11-29 14:07 ` [Bug target/64108] " hjl.tools at gmail dot com 2014-12-02 14:11 ` hjl at gcc dot gnu.org 2014-12-04 5:13 ` zsojka at seznam dot cz 2014-12-05 11:53 ` hjl at gcc dot gnu.org 2014-12-05 12:05 ` hjl.tools at gmail dot com
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