修改在.L5
修改后的IA32代码
.file "54.c"
.text
.globl bubble_a
.type bubble_a, @function
bubble_a:
pushl %ebp
movl %esp, %ebp
subl $16, %esp
movl $1, -8(%ebp)
jmp .L2
.L6:
movl -8(%ebp), %eax
subl $1, %eax
movl %eax, -12(%ebp)
jmp .L3
.L5:
movl -12(%ebp), %eax
addl $1, %eax
sall $2, %eax
addl 8(%ebp), %eax
movl %eax,%ebx
movl (%eax), %edx
movl -12(%ebp), %eax
sall $2, %eax
addl 8(%ebp), %eax
movl %eax,%ecx
movl (%eax), %eax
cmpl %eax, %edx
cmovl %ebx,%esi
cmovl %ecx,%ebx
cmovl %esi,%ecx
movl %edx,(%ebx)
movl %eax,(%ecx)subl $1, -12(%ebp)
.L3:
cmpl $0, -12(%ebp)
jns .L5
addl $1, -8(%ebp)
.L2:
movl -8(%ebp), %eax
cmpl 12(%ebp), %eax
jl .L6
leave
ret
.size bubble_a, .-bubble_a
.section .rodata
.LC0:
.string "%d "
.text
.globl main
.type main, @function
main:
pushl %ebp
movl %esp, %ebp
andl $-16, %esp
subl $64, %esp
movl $54, 20(%esp)
movl $63, 24(%esp)
movl $0, 28(%esp)
movl $-12, 32(%esp)
movl $45, 36(%esp)
movl $34523, 40(%esp)
movl $34, 44(%esp)
movl $-4, 48(%esp)
movl $0, 52(%esp)
movl $345, 56(%esp)
movl $10, 4(%esp)
leal 20(%esp), %eax
movl %eax, (%esp)
call bubble_a
movl $0, 60(%esp)
jmp .L9
.L10:
movl 60(%esp), %eax
leal 0(,%eax,4), %edx
leal 20(%esp), %eax
addl %edx, %eax
movl (%eax), %edx
movl $.LC0, %eax
movl %edx, 4(%esp)
movl %eax, (%esp)
call printf
addl $1, 60(%esp)
.L9:
cmpl $9, 60(%esp)
jle .L10
leave
ret
.size main, .-main
.ident "GCC: (GNU) 4.4.7 20120313 (Red Hat 4.4.7-3)"
.section .note.GNU-stack,"",@progbits
修改后的Y86代码
.file "54.c"
.text
.globl bubble_a
.type bubble_a, @function
bubble_a:
pushl %ebp
rrmovl %esp, %ebp
irmovl $16,%esi
subl %esi, %esp
irmovl $1,%esi
rmmovl %esi, -8(%ebp)
jmp .L2
.L6:
mrmovl -8(%ebp), %eax
irmovl $1,%esi
subl %esi, %eax
rmmovl %eax, -12(%ebp)
jmp .L3
.L5:
mrmovl -12(%ebp), %eax
irmovl $1,%esi
addl %esi, %eax
addl %eax,%eax
addl %eax,%eax
mrmovl 8(%ebp),%esi
addl %esi, %eax
rrmovl %eax,%ebx
mrmovl (%eax), %edx
mrmovl -12(%ebp), %eax
addl %eax,%eax
addl %eax,%eax
mrmovl 8(%ebp),%esi
addl %esi, %eax
rrmovl %eax,%ecx
mrmovl (%eax), %eax
rrmovl %eax,%esi
rrmovl %edx,%edi
subl %esi,%edi
cmovl %ebx,%esi
cmovl %ecx,%ebx
cmovl %esi,%ecx
rmmovl %edx,(%ebx)
rmmovl %eax,(%ecx)
irmovl $1,%esi
mrmovl -12(%ebp),%edi
subl %esi,%edi
rmmovl %edi, -12(%ebp)
.L3:
irmovl $0,%esi
mrmovl -12(%ebp),%edi
subl %esi,%edi
jns .L5
irmovl $1,%esi
mrmovl -8(%ebp),%edi
addl %esi,%edi
rmmovl %edi, -8(%ebp)
.L2:
mrmovl -8(%ebp), %eax
mrmovl 12(%ebp),%esi
rrmovl %eax,%edi
subl %esi, %edi
jl .L6
rrmovl %ebp,%esp
popl %ebp
ret
.size bubble_a, .-bubble_a
.section .rodata
.LC0:
.string "%d "
.text
.globl main
.type main, @function
main:
pushl %ebp
rrmovl %esp, %ebp
irmovl $-16,%esi
andl %esi, %esp
irmovl $64,%esi
subl %esi, %esp
irmovl $54,%esi
rmmovl %esi, 20(%esp)
irmovl $63,%esi
rmmovl %esi, 24(%esp)
irmovl $0,%esi
rmmovl %esi, 28(%esp)
irmovl $-12,%esi
rmmovl %esi, 32(%esp)
irmovl $45,%esi
rmmovl %esi, 36(%esp)
irmovl $34523,%esi
rmmovl %esi, 40(%esp)
irmovl $34,%esi
rmmovl %esi, 44(%esp)
irmovl $-4,%esi
rmmovl %esi, 48(%esp)
irmovl $0,%esi
rmmovl %esi, 52(%esp)
irmovl $345,%esi
rmmovl %esi, 56(%esp)
irmovl $10,%esi
rmmovl %esi, 4(%esp)
rrmovl %esp,%eax
irmovl $20,%esi
addl %esi,%eax
rmmovl %eax, (%esp)
call bubble_a
irmovl $0,%esi
rmmovl %esi, 60(%esp)
jmp .L9
.L10:
mrmovl 60(%esp), %eax
rrmovl %eax,%edx
addl %edx,%edx
addl %edx,%edx
rrmovl %esp,%eax
irmovl $20,%esi
addl %esi,%eax
addl %edx, %eax
mrmovl (%eax), %edx
rmmovl $.LC0, %eax
rmmovl %edx, 4(%esp)
rmmovl %eax, (%esp)
call printf
irmovl $1,%esi
mrmovl 60(%esp),%edi
addl %esi,%edi
rmmovl %edi,60(%esp);
.L9:
irmovl $9,%esi
mrmovl 60(%esp),%edi
subl %esi,%edi
jle .L10
rrmovl %ebp,%esp
popl %ebp
ret
.size main, .-main
.ident "GCC: (GNU) 4.4.7 20120313 (Red Hat 4.4.7-3)"
.section .note.GNU-stack,"",@progbits