av_bswap32(x);

GCC 4.7+
	movl	%edi, %eax
	bswap	%eax
	ret

ICC 13
        movl      %edi, %edx                                    #21.12
        shrl      $8, %edx                                      #21.12
        movl      %edi, %eax                                    #21.12
        bswap     %eax                                          #21.12
        andl      $65280, %edx                                  #21.12
        shrl      $24, %edi                                     #21.12
        andl      $-65536, %eax                                 #21.12
        orl       %edi, %edx                                    #21.12
        orl       %edx, %eax                                    #21.12
        ret


av_bswap64(x);

GCC 4.5+
	movq	%rdi, %rax
	bswap	%rax
	ret

ICC 13
        movl      %edi, %edx                                    #28.33
        shrq      $32, %rdi                                     #28.60
        movl      %edx, %ecx                                    #21.12
        shrl      $8, %ecx                                      #21.12
        movl      %edx, %eax                                    #21.12
        movl      %edi, %esi                                    #21.12
        andl      $65280, %ecx                                  #21.12
        bswap     %eax                                          #21.12
        movl      %edi, %r8d                                    #21.12
        shrl      $24, %edx                                     #21.12
        andl      $-65536, %eax                                 #21.12
        shrl      $8, %esi                                      #21.12
        orl       %edx, %ecx                                    #21.12
        bswap     %r8d                                          #21.12
        andl      $65280, %esi                                  #21.12
        shrl      $24, %edi                                     #21.12
        orl       %ecx, %eax                                    #21.12
        andl      $-65536, %r8d                                 #21.12
        orl       %edi, %esi                                    #21.12
        orl       %esi, %r8d                                    #21.12
        shlq      $32, %rax                                     #28.39
        orq       %r8, %rax                                     #28.44
        ret