[Bug tree-optimization/88240] [8/9/10 Regression] Potential optimization bug: invalid pre-load of floating-point value could cause SIGFPE-underflow if value is integer

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88240

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[8/9/10/11 Regression]      |[8/9/10 Regression]
                   |Potential optimization bug: |Potential optimization bug:
                   |invalid pre-load of         |invalid pre-load of
                   |floating-point value could  |floating-point value could
                   |cause SIGFPE-underflow if   |cause SIGFPE-underflow if
                   |value is integer            |value is integer
             Blocks|96457                       |

--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
So this is a reasonable stop-gap solution for branches, now also pushed to
trunk.  I'll see if I can come up with something more sensible for trunk.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96457
[Bug 96457] PRE gets confused by punned load handling