I have a patch.
--
Summary: cexp ( __complex__ ( 0, x ) ) can be folded to cexpi (x)
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: middle-end
AssignedTo: rguenth at gcc dot gnu dot org
ReportedBy: rguenth at gcc dot gnu dot org
BugsThisDependsOn: 30172
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30197
