[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 --- Comment #6 from William Seurer --- Sorry, I wasn't very clear there. I was adding options to the default set. Compiling as-is using the default options the run will fail. Adding -fno-tree-loop-vectorize the run will fail. Adding -fno-tree-slp-vectorize the run will succeed. Of course just using -fno-tree-slp-vectorize also allows the run to succeed. The specific module that breaks things is shell2.fppized.f90. When I compile just it with -fno-tree-slp-vectorize also the run succeeds.
[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 --- Comment #5 from rguenther at suse dot de --- On Wed, 9 Dec 2015, seurer at linux dot vnet.ibm.com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 > > --- Comment #4 from William Seurer --- > (In reply to Richard Biener from comment #1) > > Can you try to bisect to an affected source file (just use > > -fno-tree-vectorize on all but one) and there to whether it is basic-block > > or loop vectorization > > (-fno-tree-loop-vectorize / -fno-tree-slp-vectorize) and specific > > loop/basic-block with -fdbg-cnt=vect_slp:N or -fdbg-cnt=vect_loop:N? > > > > Note that it seems that tonto also fails (since forever) with AVX2 on > > x86_64. > > It still fails with just -fno-tree-vectorize but succeeds with both > -fno-tree-loop-vectorize and -fno-tree-slp-vectorize. That's a very odd observation as -fno-tree-vectorize should be equivalent to -fno-tree-loop-vectorize -fno-tree-slp-vectorize. I understand your sentence correct in that -fno-tree-loop-vectorize makes 465.tonto no longer miscompare. The same is true for -fno-tree-slp-vectorize. But with -fno-tree-vectorize 465.tonto still miscompares? > I am about to go through it flipping those for individual modules. Thanks.
[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 --- Comment #4 from William Seurer --- (In reply to Richard Biener from comment #1) > Can you try to bisect to an affected source file (just use > -fno-tree-vectorize on all but one) and there to whether it is basic-block > or loop vectorization > (-fno-tree-loop-vectorize / -fno-tree-slp-vectorize) and specific > loop/basic-block with -fdbg-cnt=vect_slp:N or -fdbg-cnt=vect_loop:N? > > Note that it seems that tonto also fails (since forever) with AVX2 on x86_64. It still fails with just -fno-tree-vectorize but succeeds with both -fno-tree-loop-vectorize and -fno-tree-slp-vectorize. I am about to go through it flipping those for individual modules.
[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 --- Comment #3 from rguenther at suse dot de --- On Tue, 8 Dec 2015, izamyatin at gmail dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 > > Igor Zamyatin changed: > >What|Removed |Added > > CC||izamyatin at gmail dot com > > --- Comment #2 from Igor Zamyatin --- > > > > > Note that it seems that tonto also fails (since forever) with AVX2 on > > x86_64. > > Hmmm, at what optset are you seeing the failure? As said it was an error on my side (modified sources ...).
[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 Igor Zamyatin changed: What|Removed |Added CC||izamyatin at gmail dot com --- Comment #2 from Igor Zamyatin --- > > Note that it seems that tonto also fails (since forever) with AVX2 on x86_64. Hmmm, at what optset are you seeing the failure?
[Bug tree-optimization/68775] spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775 Richard Biener changed: What|Removed |Added CC||rguenth at gcc dot gnu.org --- Comment #1 from Richard Biener --- Can you try to bisect to an affected source file (just use -fno-tree-vectorize on all but one) and there to whether it is basic-block or loop vectorization (-fno-tree-loop-vectorize / -fno-tree-slp-vectorize) and specific loop/basic-block with -fdbg-cnt=vect_slp:N or -fdbg-cnt=vect_loop:N? Note that it seems that tonto also fails (since forever) with AVX2 on x86_64.
