* config/rs6000/rs6000.opt (mmulhw): New option. * doc/invoke.texi (-mmulhw): Document. * config/rs6000/rs6000.c (rs6000_override_options): Enable -mmulhw for 405 and 440. * config/rs6000/rs6000.md: Add half-word multiply and multiply-accumulate instructions for 405 and 440. testsuite: * gcc.target/powerpc/405-macchw-1.c, gcc.target/powerpc/405-macchw-2.c, gcc.target/powerpc/405-macchwu-1.c, gcc.target/powerpc/405-macchwu-2.c, gcc.target/powerpc/405-machhw-1.c, gcc.target/powerpc/405-machhw-2.c, gcc.target/powerpc/405-machhwu-1.c, gcc.target/powerpc/405-machhwu-2.c, gcc.target/powerpc/405-maclhw-1.c, gcc.target/powerpc/405-maclhw-2.c, gcc.target/powerpc/405-maclhwu-1.c, gcc.target/powerpc/405-maclhwu-2.c, gcc.target/powerpc/405-mulchw-1.c, gcc.target/powerpc/405-mulchw-2.c, gcc.target/powerpc/405-mulchwu-1.c, gcc.target/powerpc/405-mulchwu-2.c, gcc.target/powerpc/405-mulhhw-1.c, gcc.target/powerpc/405-mulhhw-2.c, gcc.target/powerpc/405-mulhhwu-1.c, gcc.target/powerpc/405-mulhhwu-2.c, gcc.target/powerpc/405-mullhw-1.c, gcc.target/powerpc/405-mullhw-2.c, gcc.target/powerpc/405-mullhwu-1.c, gcc.target/powerpc/405-mullhwu-2.c, gcc.target/powerpc/405-nmacchw-1.c, gcc.target/powerpc/405-nmacchw-2.c, gcc.target/powerpc/405-nmachhw-1.c, gcc.target/powerpc/405-nmachhw-2.c, gcc.target/powerpc/405-nmaclhw-1.c, gcc.target/powerpc/405-nmaclhw-2.c, gcc.target/powerpc/440-macchw-1.c, gcc.target/powerpc/440-macchw-2.c, gcc.target/powerpc/440-macchwu-1.c, gcc.target/powerpc/440-macchwu-2.c, gcc.target/powerpc/440-machhw-1.c, gcc.target/powerpc/440-machhw-2.c, gcc.target/powerpc/440-machhwu-1.c, gcc.target/powerpc/440-machhwu-2.c, gcc.target/powerpc/440-maclhw-1.c, gcc.target/powerpc/440-maclhw-2.c, gcc.target/powerpc/440-maclhwu-1.c, gcc.target/powerpc/440-maclhwu-2.c, gcc.target/powerpc/440-mulchw-1.c, gcc.target/powerpc/440-mulchw-2.c, gcc.target/powerpc/440-mulchwu-1.c, gcc.target/powerpc/440-mulchwu-2.c, gcc.target/powerpc/440-mulhhw-1.c, gcc.target/powerpc/440-mulhhw-2.c, gcc.target/powerpc/440-mulhhwu-1.c, gcc.target/powerpc/440-mulhhwu-2.c, gcc.target/powerpc/440-mullhw-1.c, gcc.target/powerpc/440-mullhw-2.c, gcc.target/powerpc/440-mullhwu-1.c, gcc.target/powerpc/440-mullhwu-2.c, gcc.target/powerpc/440-nmacchw-1.c, gcc.target/powerpc/440-nmacchw-2.c, gcc.target/powerpc/440-nmachhw-1.c, gcc.target/powerpc/440-nmachhw-2.c, gcc.target/powerpc/440-nmaclhw-1.c, gcc.target/powerpc/440-nmaclhw-2.c: New tests. From-SVN: r107344
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