http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47855
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|arm-linux-androideabi |arm-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.03.26 17:15:33
Ever Confirmed|0 |1
--- Comment #3 from Steven Bosscher <steven at gcc dot gnu.org> 2011-03-26
17:15:33 UTC ---
Confirmed. Many of the lengths are wrong, even for simple instructions.
$ arm-eabi-gcc -c -Os -march=armv7-a -mthumb -dAp -Wa,-ahlms=t.lst t.c
$ cat t.lst
ARM GAS /tmp/ccLnp6gX.s page 1
1 .syntax unified
2 .arch armv7-a
3 .eabi_attribute 27, 3
4 .fpu neon
5 .eabi_attribute 20, 1
6 .eabi_attribute 21, 1
7 .eabi_attribute 23, 3
8 .eabi_attribute 24, 1
9 .eabi_attribute 25, 1
10 .eabi_attribute 26, 1
11 .eabi_attribute 30, 4
12 .eabi_attribute 18, 4
13 .file "t.c"
14 .text
15 .align 1
16 .global pnm_gethdr
17 .thumb
18 .thumb_func
19 .type pnm_gethdr, %function
20 pnm_gethdr:
21 @ args = 0, pretend = 0, frame = 8
22 @ frame_needed = 0, uses_anonymous_args = 0
23 @ basic block 2
24 0000 37B5 push {r0, r1, r2, r4, r5, lr} @ 173
*push_multi [length = 4]
25 0002 0546 mov r5, r0 @ 2 *thumb2_movsi_vfp/1
[length = 4]
26 0004 0C46 mov r4, r1 @ 3 *thumb2_movsi_vfp/1
[length = 4]
27 0006 FFF7FEFF bl foo2 @ 15 *call_value_symbol [length
= 4]
28 000a 0028 cmp r0, #0 @ 18 *thumb2_cbnz/1 [length =
8]
29 000c 33D1 bne .L13
30 @ basic block 3
31 000e 211D adds r1, r4, #4 @ 199 *thumb2_addsi_short/1
[length = 2]
32 0010 2846 mov r0, r5 @ 21 *thumb2_movsi_vfp/1
[length = 4]
33 0012 FFF7FEFF bl foo3 @ 23 *call_value_symbol [length
= 4]
34 0016 0028 cmp r0, #0 @ 26 *thumb2_cbnz/1 [length =
8]
35 0018 2DD1 bne .L13
36 @ basic block 4
37 001a 04F10801 add r1, r4, #8 @ 28 *arm_addsi3/1
[length = 4]
38 001e 2846 mov r0, r5 @ 29 *thumb2_movsi_vfp/1
[length = 4]
39 0020 FFF7FEFF bl foo1 @ 31 *call_value_symbol [length
= 4]
40 0024 38BB cbnz r0, .L13 @ 34 *thumb2_cbnz/1
[length = 2]
41 @ basic block 5
42 0026 2068 ldr r0, [r4, #0] @ 36 *thumb2_movsi_vfp/5
[length = 4]
43 0028 FFF7FEFF bl pnm_type @ 37 *call_value_symbol
[length = 4]
44 002c 0228 cmp r0, #2 @ 39 *arm_cmpsi_insn/1
[length = 4]
45 002e 05D0 beq .L3 @ 40 *arm_cond_branch [length =
4]
46 @ basic block 6
47 0030 2846 mov r0, r5 @ 43 *thumb2_movsi_vfp/1
[length = 4]
48 0032 01A9 add r1, sp, #4 @ 44 *arm_addsi3/1
[length = 4]
49 0034 FFF7FEFF bl pnm_getsintstr @ 45 *call_value_symbol
[length = 4]
50 0038 10B1 cbz r0, .L4 @ 48 *thumb2_cbz/1 [length =
2]
51 @ basic block 7
52 003a 1CE0 b .L13 @ 201 *arm_jump [length = 4]
53 .L3:
54 @ basic block 8
55 003c 0123 movs r3, #1 @ 198 *thumb2_movsi_shortim
[length = 2]
56 003e 0193 str r3, [sp, #4] @ 55 *thumb2_movsi_vfp/7
[length = 4]
57 .L4:
ARM GAS /tmp/ccLnp6gX.s page 2
58 @ basic block 9
59 0040 019B ldr r3, [sp, #4] @ 58 *thumb2_movsi_vfp/5
[length = 4]
60 0042 002B cmp r3, #0 @ 59 *arm_cmpsi_insn/1
[length = 4]
61 0044 03DA bge .L5 @ 60 *arm_cond_branch [length =
4]
62 @ basic block 10
63 0046 5B42 negs r3, r3 @ 196 *thumb2_negsi2_short
[length = 2]
64 0048 2361 str r3, [r4, #16] @ 63 *thumb2_movsi_vfp/7
[length = 4]
65 004a 0123 movs r3, #1 @ 197 *thumb2_movsi_shortim
[length = 2]
66 004c 01E0 b .L14 @ 203 *arm_jump [length = 4]
67 .L5:
68 @ basic block 11
69 004e 2361 str r3, [r4, #16] @ 71 *thumb2_movsi_vfp/7
[length = 4]
70 0050 0023 movs r3, #0 @ 195 *thumb2_movsi_shortim
[length = 2]
71 .L14:
72 @ basic block 12
73 0052 2375 strb r3, [r4, #20] @ 74 *arm_movqi_insn/4
[length = 4]
74 0054 2068 ldr r0, [r4, #0] @ 77 *thumb2_movsi_vfp/5
[length = 4]
75 0056 FFF7FEFF bl pnm_type @ 78 *call_value_symbol
[length = 4]
76 005a 0028 cmp r0, #0 @ 80 *arm_cmpsi_insn/1
[length = 4]
77 005c 06D0 beq .L8 @ 81 *arm_cond_branch [length =
4]
78 @ basic block 13
79 005e 08DB blt .L7 @ 83 *arm_cond_branch [length =
4]
80 @ basic block 14
81 0060 0228 cmp r0, #2 @ 84 *arm_cmpsi_insn/1
[length = 4]
82 0062 06DC bgt .L7 @ 85 *arm_cond_branch [length =
4]
83 @ basic block 15
84 0064 0123 movs r3, #1 @ 193 *thumb2_movsi_shortim
[length = 2]
85 0066 0020 movs r0, #0 @ 194 *thumb2_movsi_shortim
[length = 2]
86 0068 E360 str r3, [r4, #12] @ 93 *thumb2_movsi_vfp/7
[length = 4]
87 006a 06E0 b .L2 @ 205 *arm_jump [length = 4]
88 .L8:
89 @ basic block 16
90 006c 0323 movs r3, #3 @ 192 *thumb2_movsi_shortim
[length = 2]
91 006e E360 str r3, [r4, #12] @ 99 *thumb2_movsi_vfp/7
[length = 4]
92 0070 03E0 b .L2 @ 207 *arm_jump [length = 4]
93 .L7:
94 @ basic block 17
95 0072 FFF7FEFF bl abort @ 104 *call_symbol [length = 4]
96 .L13:
97 @ basic block 18
98 0076 4FF0FF30 mov r0, #-1 @ 6 *thumb2_movsi_vfp/2
[length = 4]
99 .L2:
100 @ basic block 19
101 007a 3EBD pop {r1, r2, r3, r4, r5, pc}
102 .size pnm_gethdr, .-pnm_gethdr
103 .ident "GCC: (GNU) 4.7.0 20110326 (experimental)
[trunk revision 171556]"
ARM GAS /tmp/ccLnp6gX.s page 3
DEFINED SYMBOLS
*ABS*:0000000000000000 t.c
/tmp/ccLnp6gX.s:20 .text:0000000000000000 pnm_gethdr
/tmp/ccLnp6gX.s:24 .text:0000000000000000 $t
UNDEFINED SYMBOLS
foo2
foo3
foo1
pnm_type
pnm_getsintstr
abort
