Anton Korobeynikov f0d31ab7b8 Some dummy cost model for s390x: ...

- Prefer short-imm instructions over ext-imm, when possible
 - Prefer Z10 instructions over Z9, when possible

This hopefully should fix some dejagnu test fails on solaris

llvm-svn: 79741

2009-08-22 11:46:16 +00:00

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