[Bug tree-optimization/93681] Wrong optimization: instability of x87 floating-point results leads to nonsense

2020-02-26 Thread vincent-gcc at vinc17 dot net
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93681 --- Comment #4 from Vincent Lefèvre --- Instead of "-m32 -march=i686", one can also compile with "-mfpmath=387". This is useful if one does not have the 32-bit libs.

[Bug tree-optimization/93681] Wrong optimization: instability of x87 floating-point results leads to nonsense

2020-02-11 Thread ch3root at openwall dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93681 Alexander Cherepanov changed: What|Removed |Added See Also||https://gcc.gnu.org/bugzill

[Bug tree-optimization/93681] Wrong optimization: instability of x87 floating-point results leads to nonsense

2020-02-11 Thread tavianator at gmail dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93681 Tavian Barnes changed: What|Removed |Added CC||tavianator at gmail dot com --- Comment

[Bug tree-optimization/93681] Wrong optimization: instability of x87 floating-point results leads to nonsense

2020-02-11 Thread ch3root at openwall dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93681 --- Comment #1 from Alexander Cherepanov --- And instability of integers then easily taints surrounding code: -- #include __attribute__((noipa)) // imagine it in a separate