[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Jakub Jelinek changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #10 from Jakub Jelinek 2012-01-06 22:06:59 UTC --- Fixed.
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 --- Comment #9 from Jakub Jelinek 2012-01-06 22:05:06 UTC --- Author: jakub Date: Fri Jan 6 22:05:03 2012 New Revision: 182973 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182973 Log: PR gcov-profile/50127 * bb-reorder.c (partition_hot_cold_basic_blocks): Call clear_aux_for_blocks. Modified: trunk/gcc/ChangeLog trunk/gcc/bb-reorder.c
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Jakub Jelinek changed: What|Removed |Added Status|REOPENED|ASSIGNED AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | --- Comment #8 from Jakub Jelinek 2012-01-06 13:00:28 UTC --- Created attachment 26256 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26256 gcc47-pr50127.patch Untested fix. The problem was that partition_hot_cold_basic_blocks was leaving garbage in some bb->aux fields, but subsequent optimization passes and/or df_analyze here assume that each pass cleans that up after itself. DF was storing age in bb->aux as ptrdiff_t values, and when some bb->aux contained pointer to another bb, if it was in the upper half of address space (for 32-bit hosts), it was treated as negative age, while if in the lower half of AS (for 64-bit hosts), it was just assumed to be very huge age.
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 --- Comment #7 from Jakub Jelinek 2012-01-06 10:57:15 UTC --- Ok, I can reproduce this now. Compared to 64-bit cc1 the difference starts during the bbpart pass, particularly when partition_hot_cold_basic_blocks invokes df in if (cfun->eh->lp_array). Something in the df rescanning or so goes wrong and finally the DF fast DCE removes setters of two pseudos (114 and 116) that are actually needed. Note the pseudos are set in a hot bb and used in a cold successor bb (there is a direct EDGE_CROSSING edge in between the two).
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 --- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE 2012-01-05 17:16:21 UTC --- > --- Comment #5 from Jakub Jelinek 2012-01-05 > 09:41:13 UTC --- > Can't reproduce on x86_64-linux, nor with cross from that to > i686-sun-solaris2.11 with -m64 and using x86_64-linux bb-reorder.gcda. It reproduces for me on x86_64-linux with the following configuration: /vol/gcc/src/hg/trunk/local/configure --prefix=/vol/gcc --target=i686-unknown-linux-gnu --enable-checking=release --enable-targets=all --enable-objc-gc --with-as=/vol/gcc/bin/gas-2.22 --with-gnu-as --with-as=/vol/gcc/bin/gas-2.22 --with-gnu-as --with-ld=/vol/gcc/bin/i686/gld-2.22 --with-gnu-ld --disable-initfini-array --with-ld=/vol/gcc/bin/i686/gld-2.22 --with-gnu-ld --disable-initfini-array --with-gmp-include=/vol/gcc/include --with-gmp-lib=/vol/gcc/lib/i686 --with-mpfr-include=/vol/gcc/include --with-mpfr-lib=/vol/gcc/lib/i686 --with-mpc-include=/vol/gcc/include --with-mpc-lib=/vol/gcc/lib/i686 --enable-languages=all,ada,obj-c++,go --build=i686-unknown-linux-gnu --host=i686-unknown-linux-gnu i.e. with a 32-bit compiler executable. It doesn't with a 64-bit compiler executable. Rainer
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #5 from Jakub Jelinek 2012-01-05 09:41:13 UTC --- Can't reproduce on x86_64-linux, nor with cross from that to i686-sun-solaris2.11 with -m64 and using x86_64-linux bb-reorder.gcda.
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Rainer Orth changed: What|Removed |Added Status|RESOLVED|REOPENED Last reconfirmed||2012-01-04 Resolution|DUPLICATE | Target Milestone|--- |4.7.0 Ever Confirmed|0 |1 --- Comment #4 from Rainer Orth 2012-01-04 17:42:53 UTC --- While the partition2.C assembly failure has in fact been resolved by the fix for PR 49972, the 64-bit gcc.dg/tree-prof/bb-reorg.c execution failure remains, as described. I could meanwhile reproduce it in a i686-unknown-linux-gnu --enable-targets=all bootstrap, so there's nothing Solaris-specific in here. Richard, could you please have a look? This is also a regression from 4.6. Thanks. Rainer
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Rainer Orth changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED CC||rth at gcc dot gnu.org Resolution||DUPLICATE --- Comment #3 from Rainer Orth 2011-08-29 16:15:02 UTC --- A reghunt has confirmed that the failure of 64-bit FAIL: gcc.dg/tree-prof/bb-reorg.c execution,-fprofile-use -D_PROFILE_USE was also caused by 2011-07-23 Richard Henderson * basic-block.h (EDGE_PRESERVE): New. (EDGE_ALL_FLAGS, EDGE_COMPLEX): Include it. * bb-reorder.c: Include except.h. [...] bb-reorg SEGVs here: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 1 (LWP 1)] main () at /vol/gcc/src/hg/trunk/solaris/gcc/testsuite/gcc.dg/tree-prof/bb-reorg.c:23 23t2[t0] = s; (gdb) where #0 main () at /vol/gcc/src/hg/trunk/solaris/gcc/testsuite/gcc.dg/tree-prof/bb-reorg.c:23 #1 0x00400c4c in _start () which is caused by the following difference in assembler output: --- 21827/gcc/bb-reorg.s2011-08-20 10:48:12.562998495 +0200 +++ 21828/gcc/bb-reorg.s2011-08-20 10:48:23.486467546 +0200 @@ -83,13 +83,13 @@ .L16: movb$0, (%rax) movl$buf+4, %eax -movq$buf+3, t2+32(%rip) +movq$buf+3, (%rdx) cmpb$0, (%rax) movl$5, %esi je.L19 movb$0, (%rax) movl$buf+5, %eax -movq$buf+4, t2+40(%rip) +movq$buf+4, (%rcx) cmpb$0, (%rax) movl$6, %esi movl$7, %ecx Both %rcx/%rdx are uninitialized. *** This bug has been marked as a duplicate of bug 49972 ***
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 Rainer Orth changed: What|Removed |Added Depends on||49972 --- Comment #2 from Rainer Orth 2011-08-19 14:29:26 UTC --- The partition2.C part is a duplicate, the bb-reorg.c might be as well.
[Bug gcov-profile/50127] [4.7 regression] g++.dg/tree-prof/partition2.C FAILs on several targets
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50127 --- Comment #1 from Dominique d'Humieres 2011-08-19 14:22:34 UTC --- See pr50035 marked as a duplicate of bug 49972.
