On 14 Feb 2008 at 17:35, Jakub Jelinek wrote: > Where do you see a mispredicted branch?
try it with -Os (gentoo gcc 4.2.2): 0000000000000000 <foo>: 0: 48 83 ec 58 sub $0x58,%rsp 4: 65 48 8b 04 25 28 00 00 00 mov %gs:0x28,%rax d: 48 89 44 24 48 mov %rax,0x48(%rsp) 12: 31 c0 xor %eax,%eax 14: 48 89 e7 mov %rsp,%rdi 17: e8 00 00 00 00 callq 1c <foo+0x1c> 18: R_X86_64_PC32 bar+0xfffffffffffffffc 1c: 48 8b 54 24 48 mov 0x48(%rsp),%rdx 21: 65 48 33 14 25 28 00 00 00 xor %gs:0x28,%rdx 2a: b8 06 00 00 00 mov $0x6,%eax 2f: 74 05 je 36 <foo+0x36> 31: e8 00 00 00 00 callq 36 <foo+0x36> 32: R_X86_64_PC32 __stack_chk_fail+0xfffffffffffffffc 36: 48 83 c4 58 add $0x58,%rsp 3a: c3 retq -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
