Microsoft Visual C/C++ (VS2003) compiler output using -O2 (optimize for speed) switch, x86 Pentium Pro -G6 target:

Non-inline functions:

; Function compile flags: /Ogty
_TEXT	SEGMENT
_pq$ = 8						; size = 4
_inc64i	PROC NEAR					; COMDAT

; 31   :     pq[0] += 1;

  00000	8b 44 24 04	 mov	 eax, DWORD PTR _pq$[esp-4]
  00004	8b 08		 mov	 ecx, DWORD PTR [eax]
  00006	8b 50 04	 mov	 edx, DWORD PTR [eax+4]
  00009	83 c1 01	 add	 ecx, 1
  0000c	83 d2 00	 adc	 edx, 0
  0000f	89 08		 mov	 DWORD PTR [eax], ecx
  00011	89 50 04	 mov	 DWORD PTR [eax+4], edx

; 32   :     pq[1] += 1;

  00014	8b 48 08	 mov	 ecx, DWORD PTR [eax+8]
  00017	8b 50 0c	 mov	 edx, DWORD PTR [eax+12]
  0001a	83 c1 01	 add	 ecx, 1
  0001d	83 d2 00	 adc	 edx, 0
  00020	89 48 08	 mov	 DWORD PTR [eax+8], ecx
  00023	89 50 0c	 mov	 DWORD PTR [eax+12], edx

; 33   : }

  00026	c3		 ret	 0
_inc64i	ENDP

; Function compile flags: /Ogty
_TEXT	SEGMENT
_pl$ = 8						; size = 4
_inc32i	PROC NEAR					; COMDAT

; 43   :     pl[0] += 1;

  00000	8b 44 24 04	 mov	 eax, DWORD PTR _pl$[esp-4]
  00004	8b 08		 mov	 ecx, DWORD PTR [eax]
  00006	41		 inc	 ecx
  00007	89 08		 mov	 DWORD PTR [eax], ecx

; 44   :     pl[1] += 1;

  00009	8b 50 04	 mov	 edx, DWORD PTR [eax+4]
  0000c	42		 inc	 edx
  0000d	89 50 04	 mov	 DWORD PTR [eax+4], edx

; 45   : }

  00010	c3		 ret	 0
_inc32i	ENDP



Inlined loop:

; 63   :     {
; 64   :         inc32i(&rgl[0]);

  00010	8b 0d 00 00 00
	00		 mov	 ecx, DWORD PTR _rgl
  00016	41		 inc	 ecx
  00017	89 0d 00 00 00
	00		 mov	 DWORD PTR _rgl, ecx
  0001d	8b 15 04 00 00
	00		 mov	 edx, DWORD PTR _rgl+4
  00023	42		 inc	 edx
  00024	89 15 04 00 00
	00		 mov	 DWORD PTR _rgl+4, edx

; 65   :         inc64i(&rgq[0]);

  0002a	8b 0d 00 00 00
	00		 mov	 ecx, DWORD PTR _rgq
  00030	8b 15 04 00 00
	00		 mov	 edx, DWORD PTR _rgq+4
  00036	83 c1 01	 add	 ecx, 1
  00039	83 d2 00	 adc	 edx, 0
  0003c	89 0d 00 00 00
	00		 mov	 DWORD PTR _rgq, ecx
  00042	89 15 04 00 00
	00		 mov	 DWORD PTR _rgq+4, edx
  00048	8b 0d 08 00 00
	00		 mov	 ecx, DWORD PTR _rgq+8
  0004e	8b 15 0c 00 00
	00		 mov	 edx, DWORD PTR _rgq+12
  00054	83 c1 01	 add	 ecx, 1
  00057	83 d2 00	 adc	 edx, 0

  0005b	89 0d 08 00 00
	00		 mov	 DWORD PTR _rgq+8, ecx
  00061	89 15 0c 00 00
	00		 mov	 DWORD PTR _rgq+12, edx