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* [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code @ 2010-07-20 7:02 jojelino at gmail dot com 2010-07-20 7:03 ` [Bug tree-optimization/44997] " jojelino at gmail dot com ` (8 more replies) 0 siblings, 9 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 7:02 UTC (permalink / raw) To: gcc-bugs $ /tmp/winsup/winsup/utils/mingw gcc -c -O1 -march=core2 -g -mfpmath=sse -I../ ../.././winsup/mingw/include -I../../.././winsup/mingw/../include -nostdinc -iw ithprefixbefore include -I ../../.././winsup/mingw/../w32api/include ../../../. /winsup/mingw/tlssup.c -fdump-tree-all -v -o tlssup.o Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-cygwin/4.6.0/lto-wrapper.exe Target: i686-pc-cygwin Configured with: ./configure --prefix=/usr --disable-win32-registry --enable-threads=posix --enable-languages=c,c++ --with-win32-nlsapi=unicode --enable-tls --disable-bootstrap --enable-shared --disable-sjlj-exceptions Thread model: posix gcc version 4.6.0 20100720 (experimental) (GCC) COLLECT_GCC_OPTIONS='-D__MINGW32__' '-D__MSVCRT__' '-DWIN32' '-D_WIN32' '-D__WIN32' '-D__WIN32__' '-U__CYGWIN__' '-Uunix' '-U__unix__' '-U__unix' '-U' '__CYGWIN32__' '-B/usr/i686-pc-mingw32/lib/' '-c' '-O1' '-march=core2' '-g' '-mfpmath=sse' '-I../../.././winsup/mingw/include' '-I../../.././winsup/mingw/../include' '-nostdinc' '-iwithprefixbefore' 'include' '-I' '../../.././winsup/mingw/../w32api/include' '-fdump-tree-all' '-v' '-o' 'tlssup.o' /usr/libexec/gcc/i686-pc-cygwin/4.6.0/cc1.exe -quiet -nostdinc -v -I../../.././winsup/mingw/include -I../../.././winsup/mingw/../include -I ../../.././winsup/mingw/../w32api/include -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -D__MINGW32__ -D__MSVCRT__ -DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ -U__CYGWIN__ -Uunix -U__unix__ -U__unix -U __CYGWIN32__ -iwithprefixbefore include ../../.././winsup/mingw/tlssup.c -quiet -dumpbase tlssup.c -march=core2 -mfpmath=sse -auxbase-strip tlssup.o -g -O1 -version -fdump-tree-all -o /cygdrive/d/temp/cache/cc5gTTLK.s GNU C (GCC) version 4.6.0 20100720 (experimental) (i686-pc-cygwin) compiled by GNU C version 4.6.0 20100714 (experimental), GMP version 5.0.0, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 ignoring nonexistent directory "../../.././winsup/mingw/../include" #include "..." search starts here: #include <...> search starts here: ../../.././winsup/mingw/include ../../.././winsup/mingw/../w32api/include /usr/lib/gcc/i686-pc-cygwin/4.6.0/include End of search list. GNU C (GCC) version 4.6.0 20100720 (experimental) (i686-pc-cygwin) compiled by GNU C version 4.6.0 20100714 (experimental), GMP version 5.0.0, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: dd858d16e3b9efdb2261b9ced20762e0 COLLECT_GCC_OPTIONS='-D__MINGW32__' '-D__MSVCRT__' '-DWIN32' '-D_WIN32' '-D__WIN32' '-D__WIN32__' '-U__CYGWIN__' '-Uunix' '-U__unix__' '-U__unix' '-U' '__CYGWIN32__' '-B/usr/i686-pc-mingw32/lib/' '-c' '-O1' '-march=core2' '-g' '-mfpmath=sse' '-I../../.././winsup/mingw/include' '-I../../.././winsup/mingw/../include' '-nostdinc' '-iwithprefixbefore' 'include' '-I' '../../.././winsup/mingw/../w32api/include' '-fdump-tree-all' '-v' '-o' 'tlssup.o' /usr/lib/gcc/i686-pc-cygwin/4.6.0/../../../../i686-pc-cygwin/bin/as.exe -o tlssup.o /cygdrive/d/temp/cache/cc5gTTLK.s COMPILER_PATH=/usr/i686-pc-mingw32/lib/:/usr/libexec/gcc/i686-pc-cygwin/4.6.0/:/usr/libexec/gcc/i686-pc-cygwin/4.6.0/:/usr/libexec/gcc/i686-pc-cygwin/:/usr/lib/gcc/i686-pc-cygwin/4.6.0/:/usr/lib/gcc/i686-pc-cygwin/:/usr/lib/gcc/i686-pc-cygwin/4.6.0/../../../../i686-pc-cygwin/bin/ LIBRARY_PATH=/usr/i686-pc-mingw32/lib/:/usr/lib/gcc/i686-pc-cygwin/4.6.0/:/usr/lib/gcc/i686-pc-cygwin/4.6.0/../../../../i686-pc-cygwin/lib/:/usr/lib/gcc/i686-pc-cygwin/4.6.0/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-D__MINGW32__' '-D__MSVCRT__' '-DWIN32' '-D_WIN32' '-D__WIN32' '-D__WIN32__' '-U__CYGWIN__' '-Uunix' '-U__unix__' '-U__unix' '-U' '__CYGWIN32__' '-B/usr/i686-pc-mingw32/lib/' '-c' '-O1' '-march=core2' '-g' '-mfpmath=sse' '-I../../.././winsup/mingw/include' '-I../../.././winsup/mingw/../include' '-nostdinc' '-iwithprefixbefore' 'include' '-I' '../../.././winsup/mingw/../w32api/include' '-fdump-tree-all' '-v' '-o' 'tlssup.o' before tree-chrec we have <bb 14>: if (dwReason_20(D) != 2) goto <bb 15>; else goto <bb 20>; <bb 20>: # pfunc_1 = PHI <&MEM[(void *)&__xd_a + 4B](14), pfunc_27(19)> # DEBUG pfunc => pfunc_1 if (pfunc_1 != &__xd_z) goto <bb 17>; else goto <bb 21>; <bb 17>: D.36698_25 = *pfunc_1; if (D.36698_25 != 0B) goto <bb 18>; else goto <bb 19>; <bb 18>: D.36698_25 (); <bb 19>: pfunc_27 = pfunc_1 + 4; # DEBUG pfunc => pfunc_27 this is equivalant from code. OK. but after applying chrec, i got <bb 14>: if (dwReason_20(D) != 2) goto <bb 16>; else goto <bb 15>; <bb 15>: # pfunc_26 = PHI <&MEM[(void *)&__xd_a + 4B](14)> # DEBUG pfunc => pfunc_26 goto <bb 18>; <bb 18>: # pfunc_62 = PHI <pfunc_27(20), pfunc_26(15)> D.36698_25 = *pfunc_62; if (D.36698_25 != 0B) goto <bb 19>; else goto <bb 20>; <bb 20>: pfunc_27 = pfunc_62 + 4; # DEBUG pfunc => pfunc_27 # DEBUG pfunc => pfunc_27 if (pfunc_27 != &__xd_z) goto <bb 18>; else goto <bb 21>; we all know there is something wrong. it resulted segmetation fault because pretest statement moved latter block so there is no way to prevent it... it introduced from -O1. is it a bug or a intended one?? -- Summary: [4.6 regression] tree-chrec introduces broken asm code Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jojelino at gmail dot com GCC build triplet: i686-pc-cygwin GCC host triplet: i686-pc-cygwin GCC target triplet: i686-pc-cygwin http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com @ 2010-07-20 7:03 ` jojelino at gmail dot com 2010-07-20 7:05 ` jojelino at gmail dot com ` (7 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 7:03 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from jojelino at gmail dot com 2010-07-20 07:02 ------- Created an attachment (id=21252) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21252&action=view) preprocessed source -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com 2010-07-20 7:03 ` [Bug tree-optimization/44997] " jojelino at gmail dot com @ 2010-07-20 7:05 ` jojelino at gmail dot com 2010-07-20 7:05 ` jojelino at gmail dot com ` (6 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 7:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from jojelino at gmail dot com 2010-07-20 07:05 ------- Created an attachment (id=21254) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21254&action=view) tree dump with -O1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com 2010-07-20 7:03 ` [Bug tree-optimization/44997] " jojelino at gmail dot com 2010-07-20 7:05 ` jojelino at gmail dot com @ 2010-07-20 7:05 ` jojelino at gmail dot com 2010-07-20 10:05 ` rguenth at gcc dot gnu dot org ` (5 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 7:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from jojelino at gmail dot com 2010-07-20 07:05 ------- Created an attachment (id=21253) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21253&action=view) tree dump with -O1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (2 preceding siblings ...) 2010-07-20 7:05 ` jojelino at gmail dot com @ 2010-07-20 10:05 ` rguenth at gcc dot gnu dot org 2010-07-20 11:05 ` jojelino at gmail dot com ` (4 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: rguenth at gcc dot gnu dot org @ 2010-07-20 10:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from rguenth at gcc dot gnu dot org 2010-07-20 10:05 ------- I don't see anything wrong. Can you reduce your testcase to something that is executable? -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.6.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (3 preceding siblings ...) 2010-07-20 10:05 ` rguenth at gcc dot gnu dot org @ 2010-07-20 11:05 ` jojelino at gmail dot com 2010-07-20 11:05 ` jojelino at gmail dot com ` (3 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 11:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from jojelino at gmail dot com 2010-07-20 11:04 ------- Created an attachment (id=21260) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21260&action=view) generated asm with -O0 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (4 preceding siblings ...) 2010-07-20 11:05 ` jojelino at gmail dot com @ 2010-07-20 11:05 ` jojelino at gmail dot com 2010-07-20 11:28 ` jojelino at gmail dot com ` (2 subsequent siblings) 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 11:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #6 from jojelino at gmail dot com 2010-07-20 11:05 ------- Created an attachment (id=21261) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21261&action=view) generated asm with -O2 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (5 preceding siblings ...) 2010-07-20 11:05 ` jojelino at gmail dot com @ 2010-07-20 11:28 ` jojelino at gmail dot com 2010-07-26 11:52 ` jakub at gcc dot gnu dot org 2010-08-20 12:38 ` jakub at gcc dot gnu dot org 8 siblings, 0 replies; 10+ messages in thread From: jojelino at gmail dot com @ 2010-07-20 11:28 UTC (permalink / raw) To: gcc-bugs ------- Comment #7 from jojelino at gmail dot com 2010-07-20 11:28 ------- Created an attachment (id=21262) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21262&action=view) reduced testcase (In reply to comment #4) > I don't see anything wrong. Can you reduce your testcase to something that > is executable? > uhh i hope this could be helpful. it introduces segfault from -O1. but it doesn't do without -O switch -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (6 preceding siblings ...) 2010-07-20 11:28 ` jojelino at gmail dot com @ 2010-07-26 11:52 ` jakub at gcc dot gnu dot org 2010-08-20 12:38 ` jakub at gcc dot gnu dot org 8 siblings, 0 replies; 10+ messages in thread From: jakub at gcc dot gnu dot org @ 2010-07-26 11:52 UTC (permalink / raw) To: gcc-bugs ------- Comment #8 from jakub at gcc dot gnu dot org 2010-07-26 11:51 ------- Isn't this dup of PR45075? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/44997] [4.6 regression] tree-chrec introduces broken asm code 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com ` (7 preceding siblings ...) 2010-07-26 11:52 ` jakub at gcc dot gnu dot org @ 2010-08-20 12:38 ` jakub at gcc dot gnu dot org 8 siblings, 0 replies; 10+ messages in thread From: jakub at gcc dot gnu dot org @ 2010-08-20 12:38 UTC (permalink / raw) To: gcc-bugs ------- Comment #9 from jakub at gcc dot gnu dot org 2010-08-20 12:38 ------- Invalid. -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |INVALID http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44997 ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2010-08-20 12:38 UTC | newest] Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-07-20 7:02 [Bug tree-optimization/44997] New: [4.6 regression] tree-chrec introduces broken asm code jojelino at gmail dot com 2010-07-20 7:03 ` [Bug tree-optimization/44997] " jojelino at gmail dot com 2010-07-20 7:05 ` jojelino at gmail dot com 2010-07-20 7:05 ` jojelino at gmail dot com 2010-07-20 10:05 ` rguenth at gcc dot gnu dot org 2010-07-20 11:05 ` jojelino at gmail dot com 2010-07-20 11:05 ` jojelino at gmail dot com 2010-07-20 11:28 ` jojelino at gmail dot com 2010-07-26 11:52 ` jakub at gcc dot gnu dot org 2010-08-20 12:38 ` jakub at gcc dot gnu dot org
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