[PATCH 1/2] CALL_INSN may not be a real function call.

[Segher Boessenkool]

On Mon, Jul 05, 2021 at 06:03:21PM -0600, Jeff Law wrote:
> It reminds me a bit of millicode calls on the PA or calls to special 
> routines in libgcc.  They're calls to functions, but those functions do 
> not follow the standard ABI.

Something with CALL_INSN_FUNCTION_USAGE?  And maybe some clobbers?


Segher