http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52258
Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-02-23
CC| |ramana at gcc dot gnu.org
Known to work| |4.7.0
Ever Confirmed|0 |1
Known to fail| |4.6.3
--- Comment #4 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2012-02-23
02:22:28 UTC ---
Fails for anything earlier than trunk strangely enough while 4.6 goes wrong.
Trunk at O2 appears to generate :
00000000 <main>:
0: ed9f 7b13 vldr d7, [pc, #76] ; 50 <main+0x50>
4: ee87 7b07 vdiv.f64 d7, d7, d7
8: b510 push {r4, lr}
a: 201f movs r0, #31
c: b082 sub sp, #8
e: ed8d 7b00 vstr d7, [sp]
12: f7ff fffe bl 0 <feclearexcept>
16: ed9d 7b00 vldr d7, [sp]
1a: eeb5 7b40 vcmp.f64 d7, #0.0
1e: eef1 fa10 vmrs APSR_nzcv, fpscr
22: da10 bge.n 46 <main+0x46>
24: e9dd 0100 ldrd r0, r1, [sp]
28: f7ff fffe bl 0 <__isnan>
2c: 1c04 adds r4, r0, #0
2e: bf18 it ne
30: 2401 movne r4, #1
32: 2001 movs r0, #1
34: f7ff fffe bl 0 <fetestexcept>
38: b110 cbz r0, 40 <main+0x40>
3a: 4807 ldr r0, [pc, #28] ; (58 <main+0x58>)
3c: f7ff fffe bl 0 <puts>
40: 4620 mov r0, r4
42: b002 add sp, #8
44: bd10 pop {r4, pc}
46: 2401 movs r4, #1
48: e7f3 b.n 32 <main+0x32>
4a: bf00 nop
4c: f3af 8000 nop.w
...
