https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100855
--- Comment #10 from Nadav Halahmi ---
(In reply to Dominique d'Humieres from comment #9)
> I don't know if the test is coming from a real world problem. The modified
> test
>
> program power
> implicit none
>
> real :: sum, sum1, n, q
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100855
--- Comment #7 from Nadav Halahmi ---
(In reply to Dominique d'Humieres from comment #6)
> On a MacOS, Corei9, 2.4Ghz, the program runs in ~1s, almost indpendtly of
> the option level.
>
> This PR remind me an old problem in which the transcend
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100855
--- Comment #5 from Nadav Halahmi ---
(In reply to Richard Biener from comment #3)
> Might be interesting to see whether ifort does any expression simplification
> here. Can you share the produced assembly?
ifort pow.f90 -O3 -no-vec -S -o inte
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100855
--- Comment #4 from Nadav Halahmi ---
(In reply to Richard Biener from comment #3)
> Might be interesting to see whether ifort does any expression simplification
> here. Can you share the produced assembly?
gfortran pow.f90 -O3 -fno-tree-vecto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100855
Bug ID: 100855
Summary: pow run time gfortran vs ifort
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
