[Bug target/44072] Use 'add r0, 1' to replace 'cmp r0, -1' in thumb2

[rearnsha at gcc dot gnu dot org]

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rearnsha at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44072