🚀 go-pugleaf

How can I get gcc to inline this code (taken from the gcc.info files)?


------- start of test.C ----------------------------------
static inline int inc (int *a) {(*a)++;}

main () {
	int a = 0;
	inc (&a);
	inc (&a);
	inc (&a);
}
------- end of test.C -------------------------------------


When I compile w/ gcc 2.2.2 (using -S and -Winline), I get 
no warnings and the following decmips assembly code:


------- start of test.s ----------------------------------
	.file	1 "test.C"

 # GNU C++ 2.2.2 [AL 1.1, MM 19] DECstation running ultrix compiled by GNU C

 # Cc1 defaults:

 # Cc1 arguments (-G value = 8, Cpu = default, ISA = 1):
 # -quiet -dumpbase -Winline -o

gcc2_compiled.:
	.text
	.align	2
	.globl	main

	.loc	1 3
	.ent	main
main:
	subu	$sp,$sp,40		# vars= 8, regs= 2/0, args = 16, extra= 8
	.frame	$fp,0,$31
	.mask	0xc0000000,-20
	.fmask	0x00000000,0
	sw	$31,20($sp)
	sw	$fp,16($sp)
	addu	$fp,$sp,40	# set up frame pointer
	jal	__main
	sw	$0,-12($fp)
	subu	$2,$fp,12
	move	$4,$2
	jal	inc__FPi ****************** NON-INLINED REFERENCE!
	subu	$2,$fp,12
	move	$4,$2
	jal	inc__FPi ****************** NON-INLINED REFERENCE!
	subu	$2,$fp,12
	move	$4,$2
	jal	inc__FPi ****************** NON-INLINED REFERENCE!
	move	$2,$0
	j	$L3
	j	$L3
$L3:
	subu	$sp,$fp,40		# sp not trusted  here
	lw	$31,20($sp)
	lw	$fp,16($sp)
	addu	$sp,$sp,40
	j	$31
	.end	main
	.align	2

	.loc	1 1
	.ent	inc__FPi
inc__FPi:
	subu	$sp,$sp,16		# vars= 0, regs= 1/0, args = 0, extra= 8
	.frame	$fp,0,$31
	.mask	0x40000000,-16
	.fmask	0x00000000,0
	sw	$fp,0($sp)
	addu	$fp,$sp,16	# set up frame pointer
	move	$2,$4
	lw	$3,0($2)
	addu	$4,$3,1
	sw	$4,0($2)
	j	$L2
	j	$L1
$L2:
$L1:
	subu	$sp,$fp,16		# sp not trusted  here
	lw	$fp,0($sp)
	addu	$sp,$sp,16
	j	$31
	.end	inc__FPi

------- end of test.s -------------------------------------

I get similar results when I compile on a SPARC.

Thanks,

Tim
----
MMMM   MMMM  Tim Burks
 MM M M MM   University of Michigan/Advanced Computer Architecture Lab
 MM  M  MM   Ann Arbor, MI 48109
MMMM   MMMM  burks@eecs.umich.edu 
-- 
MMMM   MMMM  Tim Burks
 MM M M MM   University of Michigan/Advanced Computer Architecture Lab
 MM  M  MM   Ann Arbor, MI 48109
MMMM   MMMM  burks@eecs.umich.edu