[gold commit] PR gold/18106: Fix support for i386 TLS GD-to-IE optimization

[Cary Coutant]

There are two cases to support, one with an SIB-form (6-byte) LEA,
the other with a 5-byte LEA and a NOP after the call __tls_get_addr.
Gold did not yet support the second case. This patch adds that
support.

Tested on i386 by HJ.

2015-03-22  Cary Coutant  <cary@google.com>

gold/
        PR gold/18106
        * i386.cc (Target_i386::Relocate::tls_gd_to_ie): Fix support for
        non-SIB form of lea, with nop after the call.
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