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2008-05-08 David Daney <ddaney@avtrex.com> * lib/target-supports.exp (check_effective_target_sync_int_long): Add mips*-*-*. (check_effective_target_sync_char_short): Same. 2008-05-08 David Daney <ddaney@avtrex.com> Richard Sandiford <rsandifo@nildram.co.uk> * config/mips/mips.md (mips_expand_compare_and_swap_12): Handle special case of constant zero operands. * config/mips/mips.c (mips_expand_compare_and_swap_12): Zero extend old and new values. Special case constant zero values. * config/mips/mips.h (MIPS_COMPARE_AND_SWAP): Skip 'sync' if compare fails. (MIPS_COMPARE_AND_SWAP_12): Handle constant zero operands. (MIPS_COMPARE_AND_SWAP_12_0): New macro. Co-Authored-By: Richard Sandiford <rsandifo@nildram.co.uk> From-SVN: r135088
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