Andrew Pinski

`cabs (x + 0i)`and `cabs(0.0 + xi)` should be optimized to `abs(x)` even without `-ffast-math`

5

Take the fortran testcase: ``` subroutine foo(a,b,n) real(kind(1d0))::a real(kind(1d0))::b integer::i,n complex(kind(1d0))::c c = a b=abs(c) end subroutine foo ``` This should be just optimized to `abs(a)` rather than a call...

[BUG]: GCC dump file rtl pre cannot be selected

4

### Describe the bug The `rtl pre` pass has a space in its name and the outfile become .pre . there is no way to select it from dump file...

Build does not work with GCC 15+

9

With GCC 15, the build fails due to missing cstdint include. GCC 15 removed some extra includes in the standard headers and caused the issue. See https://gcc.gnu.org/gcc-15/porting_to.html for more information....