[Bug middle-end/42479] New: Wrong-code for induct.f90 with " -O3 -floop-block"

["dominiq at lps dot ens dot fr" <gcc-bugzilla at gcc dot gnu dot org>]

At revision 155425 the executable  for induct.f90 compiled with " -O3
-floop-block" gives:

...
 Maximum wand/quad abs rel mutual inductance =   1.84138324899744549E-002
...

instead of 

...
 Maximum wand/quad abs rel mutual inductance =   5.95379428444659381E-002
...

when compiled with "-O2 -floop-block".

Note that the wrong code runs in ~8.5s, while the fastest right code runs in
~14s.


-- 
           Summary: Wrong-code  for induct.f90 with " -O3 -floop-block"
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dominiq at lps dot ens dot fr
 GCC build triplet: x86_64-apple-darwin10
  GCC host triplet: x86_64-apple-darwin10
GCC target triplet: x86_64-apple-darwin10


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42479