Bug#799905: gcc-4.7: generates broken SSE2 code for -ftree-vectorize/-O3 for unaligned dword access

2015-09-24 Thread Henrique de Moraes Holschuh
On Thu, 24 Sep 2015, Henrique de Moraes Holschuh wrote: > 1. Bug exists in gcc Debian 4.6.4-7 (latest 4.6 in unstable) > 2a. Bug exists in gcc Debian 4.7.2-5 (default gcc for oldstable) > 2b. Bug exists in gcc Debian 4.7.4-3 (latest 4.7 in unstable) > 3. Bug exists in gcc Debian 4.8.5-1 (latest 4

Bug#799905: gcc-4.7: generates broken SSE2 code for -ftree-vectorize/-O3 for unaligned dword access

2015-09-24 Thread Henrique de Moraes Holschuh
Matthias, Given the new information I just sent to the bug report, and since all current versions of gcc have this issue, it should not remain as "wishlist" in gcc-4.7 only. I have tagged it "upstream" for now, and removed the "moreinfo" tag. Should I raise severity back to important, or to norm

Bug#799953: gcc-4.9: incorrect double to integer conversion on i386

2015-09-24 Thread Miroslav Urbanek
Package: gcc Version: 4:5.2.1-4 Severity: normal Tags: upstream Hello, I believe I've found a bug in GCC that affects plymouth and maybe other packages on i386. The following minimal code produces an incorrect result. $ cat test.c #include #include void main(int argc, char **argv) { f

Processed: tagging 799905

2015-09-24 Thread Debian Bug Tracking System
Processing commands for cont...@bugs.debian.org: > tags 799905 = upstream Bug #799905 [gcc-4.7] gcc-4.7: generates broken SSE2 code for -ftree-vectorize/-O3 for unaligned dword access Added tag(s) upstream; removed tag(s) moreinfo. > thanks Stopping processing here. Please contact me if you need

Bug#799905: gcc-4.7: generates broken SSE2 code for -ftree-vectorize/-O3 for unaligned dword access

2015-09-24 Thread Henrique de Moraes Holschuh
On Thu, 24 Sep 2015, Henrique de Moraes Holschuh wrote: > It still exists on gcc-4.9 in stable (gcc Debian 4.9.2-10). I am going to > test on an unstable chroot and gcc-snapshot in a few moments. I've tested it in unstable as well. Here's a proper summary: 1. Bug exists in gcc Debian 4.6.4-7

Bug#799905: gcc-4.7: generates broken SSE2 code for -ftree-vectorize/-O3 for unaligned dword access

2015-09-24 Thread Henrique de Moraes Holschuh
On Thu, 24 Sep 2015, Matthias Klose wrote: > which is EOL upstream for more than a year, and which targets non-default > flags. You don't even try to reproduce with current GCC versions in -O3 is not exactly a "uncommon" flag. I just tracked it down to -ftree-vectorize (enabled by -O3) to _help_