http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52692
Bug #: 52692 Summary: [avr]: Add support for avr-specific built-ins + LTO Classification: Unclassified Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: g...@gcc.gnu.org CC: eric.wedding...@atmel.com Target: avr Implement TARGET_BUILTIN_DECL so that the following works: int main (void) { __builtin_avr_delay_cycles (1000); return 0; } Currently, this prints $ avr-gcc main.c -S -flto main.c:7:1: sorry, unimplemented: tree bytecode streams do not support machine specific builtin functions on this target