So mcore-elf is the slowest target to test with a simulator. Not because it's simulator is particularly bad, but because some tests timeout as they've gotten into infinite loops. This causes the mcore-elf port to take about 2X longer than most other gdbsim ports.
I tracked this down to the port unconditionally adding -funsigned-bitfields to CC1_SPEC. According to the comment it's how the ABI is defined for the mcore targets.
It'd be nice to get reasonable results from mcore-elf in a reasonable amount of time. The question is how.
I *could* just disable the -funsigned-bitfields within the tester. We certainly have the ability to carry forward patches like this which exist only to help the testing effort.
Another approach would be to add an explicit -fsigned-bifields to the arguments for the affected tests. I'd guess it's on the order of around 35 distinct tests that would need to be updated.
A third approach would be to grub around and see if there's a way to add a -fsigned-bitfields using dejagnu, perhaps in the baseboards file.
Looking for suggestions/recommendations here. Jeff
