difference in fn prologue?

gistfile1.txt

This is all right as we're entering the function where the data is seen as corrupted.

stage0: 

  2b29f5:       41 55                   push   %r13
  2b29f7:       41 54                   push   %r12
  2b29f9:       53                      push   %rbx
  2b29fa:       48 81 ec b8 04 00 00    sub    $0x4b8,%rsp
  2b2a01:       49 89 d6                mov    %rdx,%r14
  2b2a04:       4c 89 b5 48 fb ff ff    mov    %r14,-0x4b8(%rbp)
  2b2a0b:       48 89 bd 28 fb ff ff    mov    %rdi,-0x4d8(%rbp)

stage1: 

  2b95a5:       41 55                   push   %r13
  2b95a7:       41 54                   push   %r12
  2b95a9:       53                      push   %rbx
  2b95aa:       48 8d a4 24 48 fb ff    lea    -0x4b8(%rsp),%rsp
  2b95b1:       ff
  2b95b2:       48 8b 01                mov    (%rcx),%rax
  2b95b5:       49 89 d6                mov    %rdx,%r14
  2b95b8:       48 89 bd 28 fb ff ff    mov    %rdi,-0x4d8(%rbp)
  2b95bf:       4c 89 b5 48 fb ff ff    mov    %r14,-0x4b8(%rbp)