[Bug string/19776] Unreachable code in sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19776

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
There are

ENTRY(__memcpy_sse2_unaligned)
   movq  %rsi, %rax
   leaq  (%rdx,%rdx), %rcx
   subq  %rdi, %rax
   subq  %rdx, %rax
   cmpq  %rcx, %rax
   jb L(overlapping)

When branch is taken,

   cmpq  %rsi, %rdi
   jae   .L3

will never be taken.

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