crash after "error in backend: Broken function found"

[llvmbot]

Bugzilla Link	21604
Resolution	FIXED
Resolved on	Dec 01, 2014 08:37
Version	trunk
OS	Linux
Blocks	#22065
Attachments	C test case produced, test case run script
Reporter	LLVM Bugzilla Contributor
CC	@majnemer,@pogo59

Extended Description

Attributes 'optsize and optnone' are incompatible!
i8* ()* @​find_fsp
fatal error: error in backend: Broken function found, compilation aborted!

Test case attached.

[majnemer]

It can be reduced down to running clang -Os with
attribute((optnone)) void f() {}

[pogo59]

That's odd... CodeGenModule has code to remove OptimizeForSize if it
sees OptimizeNone. I'll take a look.

[pogo59]

Should be fixed in r222683.

[pogo59]

Edward, I noticed you marked this as blocking #22065 ; I'm curious about
your use-case. Do you habitually use 'optnone' while building/debugging
Coreboot?

[llvmbot]

mentioned in issue #22065