[Bug tree-optimization/14541] [tree-ssa] built-in math functions are not fully optimized at tree level

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14541

--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to ktkachov from comment #21)
> Created attachment 34215 [details]
> Link errors output for aarch64
> 
> > Which one exactly?  That is, what is the failing link output?
> 
> All of them AFAICS. I'm attaching the link failures log.
> 
> The test PASSes at -O2 -flto and -O2 -flto -flto-partition=none
> 
> but FAILs on all other torture options

With a cross to aarch64-linux and compiling with -O1+ -ffast-math the
result is as expected (optimized to empty functions).  How exactly
do you configure?  I used

/space/rguenther/src/svn/trunk2/configure --target=aarch64-suse-linux
--enable-languages=c,c++,fortran --enable-checking