f18-llvm-project icon indicating copy to clipboard operation
f18-llvm-project copied to clipboard

Published 20 hours ago • verified publisher icon flang-compiler

Unnecessary Argument Copies in intrinsic calls

Open mleair opened this issue 3 years ago • 0 comments

We are making unnecessary copies of arguments to intrinsic calls when the arguments are arrays. This was first exposed with calls to dot product, but there are probably others.

program s integer, parameter :: LONGreal = 8 real (kind = LONGreal), dimension(-1:11) :: x real (kind = LONGreal), dimension(0:12) :: g real (kind = LONGreal) :: gs gs = dot_product(g(0:12:1),x(11:(-1):(-1))) end program

mleair avatar Oct 08 '21 16:10 mleair