[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 Kai Tietz ktietz at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #10 from Kai Tietz ktietz at gcc dot gnu.org --- Fixed on trunk and 4.9
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 Jeffrey A. Law law at redhat dot com changed: What|Removed |Added CC||law at redhat dot com Summary|[4.9/5 Regression] ICE on |[4.9 Regression] ICE on |valid code at -O3 on|valid code at -O3 on |x86_64-linux-gnu in |x86_64-linux-gnu in |vectorizable_reduction, at |vectorizable_reduction, at |tree-vect-loop.c:4913 |tree-vect-loop.c:4913 --- Comment #8 from Jeffrey A. Law law at redhat dot com --- Fixed on trunk.
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #9 from Kai Tietz ktietz at gcc dot gnu.org --- Author: ktietz Date: Wed Feb 25 14:12:46 2015 New Revision: 220968 URL: https://gcc.gnu.org/viewcvs?rev=220968root=gccview=rev Log: 2015-02-25 Richard Biener rguent...@suse.de Kai Tietz kti...@redhat.com Backport from mainline PR tree-optimization/61917 * tree-vect-loop.c (vectorizable_reduction): Allow vect_internal_def without reduction to exit graceful. ChangeLog testsuite/ 2015-02-25 Kai Tietz kti...@redhat.com Backport from mainline PR tree-optimization/61917 * gcc.dg/vect/vect-pr61917.c: New file. Added: branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/vect/vect-pr61917.c Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/testsuite/ChangeLog branches/gcc-4_9-branch/gcc/tree-vect-loop.c
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #16 from Jakub Jelinek jakub at gcc dot gnu.org --- I certainly can reproduce it, the problem is that reduc_def_stmt is NULL. dt is vect_constant_def.
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |--- --- Comment #11 from H.J. Lu hjl.tools at gmail dot com --- (In reply to Kai Tietz from comment #10) Fixed on trunk and 4.9 The fix caused: FAIL: gcc.dg/pr56350.c (internal compiler error) FAIL: gcc.dg/pr56350.c (test for excess errors) [hjl@gnu-6 gcc]$ ./xgcc -B./ -O -ftree-vectorize /export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c /export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c: In function âfâ: /export/gnu/import/git/sources/gcc/gcc/testsuite/gcc.dg/pr56350.c:8:1: internal compiler error: Segmentation fault f (void) ^ 0xd1f836 crash_signal /export/gnu/import/git/sources/gcc/gcc/toplev.c:383 0xfaf59a gimple_code /export/gnu/import/git/sources/gcc/gcc/gimple.h:1553 0xfbd855 vectorizable_reduction(gimple_statement_base*, gimple_stmt_iterator*, gimple_statement_base**, _slp_tree*) /export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:4987 0xfabc86 vect_analyze_stmt(gimple_statement_base*, bool*, _slp_tree*) /export/gnu/import/git/sources/gcc/gcc/tree-vect-stmts.c:7170 0xfb50c9 vect_analyze_loop_operations /export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1539 0xfb58cc vect_analyze_loop_2 /export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1800 0xfb5c70 vect_analyze_loop(loop*) /export/gnu/import/git/sources/gcc/gcc/tree-vect-loop.c:1898 0xfd558f vectorize_loops() /export/gnu/import/git/sources/gcc/gcc/tree-vectorizer.c:451 0xed3699 execute /export/gnu/import/git/sources/gcc/gcc/tree-ssa-loop.c:295 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. [hjl@gnu-6 gcc]$ on trunk.
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #12 from Kai Tietz ktietz at gcc dot gnu.org --- Hmm, just retested it for gcc's trunk. Can't reproduce it. I will retest with current trunk, I might have a different patch in tree, which makes the difference here. Additionally, what target you are using?
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #13 from H.J. Lu hjl.tools at gmail dot com --- (In reply to Kai Tietz from comment #12) Hmm, just retested it for gcc's trunk. Can't reproduce it. I will retest with current trunk, I might have a different patch in tree, which makes the difference here. Additionally, what target you are using? Also happened on 4.9 branch: [hjl@gnu-6 gcc]$ ./xgcc -v Using built-in specs. COLLECT_GCC=./xgcc Target: x86_64-unknown-linux-gnu Configured with: /export/gnu/import/git/sources/gcc/configure --enable-languages=c,c++ --disable-bootstrap --prefix=/usr/gcc-5.0.0 --with-local-prefix=/usr/local --enable-gnu-indirect-function --with-fpmath=sse Thread model: posix gcc version 5.0.0 20150225 (experimental) (GCC) [hjl@gnu-6 gcc]$
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #14 from Kai Tietz ktietz at gcc dot gnu.org --- (In reply to H.J. Lu from comment #13) (In reply to Kai Tietz from comment #12) Hmm, just retested it for gcc's trunk. Can't reproduce it. I will retest with current trunk, I might have a different patch in tree, which makes the difference here. Additionally, what target you are using? Also happened on 4.9 branch: So for me it doesn't happen on trunk, so the Also seems to me something special for you. I will recheck 4.9, as here we might have a regression I didn't caught ...
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #15 from H.J. Lu hjl.tools at gmail dot com --- (In reply to Kai Tietz from comment #14) (In reply to H.J. Lu from comment #13) (In reply to Kai Tietz from comment #12) Hmm, just retested it for gcc's trunk. Can't reproduce it. I will retest with current trunk, I might have a different patch in tree, which makes the difference here. Additionally, what target you are using? Also happened on 4.9 branch: So for me it doesn't happen on trunk, so the Also seems to me something special for you. I will recheck 4.9, as here we might have a regression I didn't caught ... I don't know why you didn't see it: Starting program: /export/build/gnu/gcc-4.9/build-x86_64-linux/gcc/cc1 -fpreprocessed /tmp/x.i -quiet -dumpbase x.i -mtune=generic -march=x86-64 -auxbase x -O -version -ftree-vectorize -o x.i GNU C (GCC) version 4.9.3 20150225 (prerelease) (x86_64-unknown-linux-gnu) compiled by GNU C version 4.8.3 20140911 (Red Hat 4.8.3-7), GMP version 5.1.2, MPFR version 3.1.2, MPC version 1.0.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C (GCC) version 4.9.3 20150225 (prerelease) (x86_64-unknown-linux-gnu) compiled by GNU C version 4.8.3 20140911 (Red Hat 4.8.3-7), GMP version 5.1.2, MPFR version 3.1.2, MPC version 1.0.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: e64a271cb64a39ff067a5fd30c57a8d9 Program received signal SIGSEGV, Segmentation fault. 0x00c1efa1 in gimple_code (g=0x0) at /export/gnu/import/git/gcc-release/gcc/gimple.h:1406 1406 return g-code; (gdb) bt #0 0x00c1efa1 in gimple_code (g=0x0) at /export/gnu/import/git/gcc-release/gcc/gimple.h:1406 #1 0x00c2bc5d in vectorizable_reduction ( stmt=gimple_assign 0x719e, gsi=0x0, vec_stmt=0x0, slp_node=0x0) at /export/gnu/import/git/gcc-release/gcc/tree-vect-loop.c:4915 #2 0x00c1bcca in vect_analyze_stmt ( stmt=gimple_assign 0x719e, need_to_vectorize=0x7fffd6af, node=0x0) at /export/gnu/import/git/gcc-release/gcc/tree-vect-stmts.c:7107 #3 0x00c1b723 in vect_analyze_stmt ( stmt=gimple_assign 0x719d32c0, need_to_vectorize=0x7fffd6af, node=0x0) at /export/gnu/import/git/gcc-release/gcc/tree-vect-stmts.c:7023 #4 0x00c24048 in vect_analyze_loop_operations (loop_vinfo=0x1a75950, slp=false) at /export/gnu/import/git/gcc-release/gcc/tree-vect-loop.c:1505 #5 0x00c247ee in vect_analyze_loop_2 (loop_vinfo=0x1a75950) at /export/gnu/import/git/gcc-release/gcc/tree-vect-loop.c:1766 #6 0x00c24b73 in vect_analyze_loop (loop=0x719d50a0) at /export/gnu/import/git/gcc-release/gcc/tree-vect-loop.c:1864 #7 0x00c41516 in vectorize_loops () at /export/gnu/import/git/gcc-release/gcc/tree-vectorizer.c:430 #8 0x00b713d3 in tree_loop_vectorize () at /export/gnu/import/git/gcc-release/gcc/tree-ssa-loop.c:154 #9 0x00b7145d in (anonymous namespace)::pass_vectorize::execute ( this=0x1a20150) ---Type return to continue, or q return to quit--- at /export/gnu/import/git/gcc-release/gcc/tree-ssa-loop.c:189 #10 0x0095dde6 in execute_one_pass ( pass=opt_pass* 0x1a20150 vect(119)) at /export/gnu/import/git/gcc-release/gcc/passes.c:2233 #11 0x0095dfff in execute_pass_list ( pass=opt_pass* 0x1a20150 vect(119)) at /export/gnu/import/git/gcc-release/gcc/passes.c:2286 #12 0x0095e030 in execute_pass_list ( pass=opt_pass* 0x1a1fa30 loop(101)) at /export/gnu/import/git/gcc-release/gcc/passes.c:2287 #13 0x0095e030 in execute_pass_list ( pass=opt_pass* 0x1a1e950 *all_optimizations(-1)) at /export/gnu/import/git/gcc-release/gcc/passes.c:2287 #14 0x006bb569 in expand_function ( node=cgraph_node* 0x718a9e18 f) at /export/gnu/import/git/gcc-release/gcc/cgraphunit.c:1774 #15 0x006bb9ca in expand_all_functions () at /export/gnu/import/git/gcc-release/gcc/cgraphunit.c:1908 #16 0x006bc2ed in compile () at /export/gnu/import/git/gcc-release/gcc/cgraphunit.c:2252 #17 0x006bc3c8 in finalize_compilation_unit () at /export/gnu/import/git/gcc-release/gcc/cgraphunit.c:2329 #18 0x005817c7 in c_write_global_declarations () ---Type return to continue, or q return to quit---q at /export/gnu/import/gQuit (gdb) f 2 #2 0x00c1bcca in vect_analyze_stmt ( stmt=gimple_assign 0x719e, need_to_vectorize=0x7fffd6af, node=0x0) at /export/gnu/import/git/gcc-release/gcc/tree-vect-stmts.c:7107 7107|| vectorizable_reduction (stmt, NULL, NULL, NULL) (gdb) call debug_gimple_stmt (stmt) patt_25 = a_lsm.8_11 0 ? 7 : 0; (gdb) f 1 #1 0x00c2bc5d in vectorizable_reduction ( stmt=gimple_assign 0x719e, gsi=0x0, vec_stmt=0x0, slp_node=0x0) at
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #19 from Kai Tietz ktietz at gcc dot gnu.org --- Author: ktietz Date: Wed Feb 25 18:21:37 2015 New Revision: 220987 URL: https://gcc.gnu.org/viewcvs?rev=220987root=gccview=rev Log: PR tree-optimization/61917 * tree-vect-loop.c (vectorizable_reduction): Handle obvious case that reduc_def_stmt is null. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-vect-loop.c
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #17 from Kai Tietz ktietz at gcc dot gnu.org --- Just posted a fix. For the 4.9 branch I could finally reproduce this error. It is caused by the PHI-check for a vector-constant, which obviously has no valid statment ...
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #18 from Kai Tietz ktietz at gcc dot gnu.org --- Author: ktietz Date: Wed Feb 25 18:20:34 2015 New Revision: 220986 URL: https://gcc.gnu.org/viewcvs?rev=220986root=gccview=rev Log: 2015-02-25 Kai Tietz kti...@redhat.com PR tree-optimization/61917 * tree-vect-loop.c (vectorizable_reduction): Handle obvious case that reduc_def_stmt is null. Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/tree-vect-loop.c
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 --- Comment #20 from Kai Tietz ktietz at gcc dot gnu.org --- HJ: Does recent patch fixes issue for you too?
[Bug tree-optimization/61917] [4.9 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vectorizable_reduction, at tree-vect-loop.c:4913
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61917 H.J. Lu hjl.tools at gmail dot com changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED --- Comment #21 from H.J. Lu hjl.tools at gmail dot com --- Fixed.
