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Patch: rs6000: fix sibcall patterns


The sibcall patterns describe LR as "match_scratch". It is actually live on
input, but not destroyed by the insn, so this is inaccurate; it should
be a "match_operand". Bootstrapped and tested on darwin.

2003-01-24 Dale Johannesen <dalej@apple.com>
* config/rs6000/rs6000.md (sibcall*): Use match_operand for LR.

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