Bug 35861

Summary:	code bloat due to -finline-small-functions
Product:	gcc	Reporter:	Andreas Kaiser <a.kaiser>
Component:	middle-end	Assignee:	Not yet assigned to anyone <unassigned>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	a.kaiser, eric.weddington, gcc-bugs, hubicka
Priority:	P3
Version:	4.3.0
Target Milestone:	---
Host:	winavr 20080402 release	Target:	avr
Build:		Known to work:
Known to fail:		Last reconfirmed:
Attachments:	sample code sample code w/o inline assembly

Description Andreas Kaiser 2008-04-07 21:52:54 UTC

In 4.3.0 -finline-small-functions cause excessive code bloat even though according to the docs this option should not significantly increase code size.

Code size 4.1.2: 0x8A
Code size 4.3.0: 0x1EA
Code size 4.3.0: 0x88 with -fno-inline-small-functions

Command line:
  avr-gcc -Os -c rf12.c
or
  avr-gcc -Os -fno-inline-small-functions -c rf12.c

Comment 1 Andreas Kaiser 2008-04-07 21:54:08 UTC

Created attachment 15442 [details]
sample code

Comment 2 Andrew Pinski 2008-04-07 21:59:02 UTC

I think this is just a miscounting of inline-asm.

Comment 3 Andreas Kaiser 2008-04-07 22:14:52 UTC

Created attachment 15443 [details]
sample code w/o inline assembly

Same situation when inline asm is removed.

Comment 4 Richard Biener 2008-04-08 10:02:21 UTC


*** This bug has been marked as a duplicate of 30908 ***