2012-07-25  Kirill Yukhin  <kirill.yukhin@intel.com>
            Michael Zolotukhin  <michael.v.zolotukhin@intel.com>

        * common/config/i386/i386-common.c (OPTION_MASK_ISA_PRFCHW_SET): New.
        (OPTION_MASK_ISA_PRFCHW_UNSET): Likewise.
        (ix86_handle_option): Handle mprfchw option.
        * config.gcc (i[34567]86-*-*): Add prfchwintrin.h.
        (x86_64-*-*): Likewise.
        * config/i386/prfchwintrin.h: New header.
        * config/i386/cpuid.h (bit_PRFCHW): New.
        (bit_BMI): Formatting fix.
        (bit_HLE): Likewise.
        (bit_RTM): Likewise.
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect
        PREFETCHW support.
        * config/i386/i386-c.c: Define __PRFCHW__ if needed.
        * config/i386/i386.c (ix86_target_string): Define
        -mprfchw option. Formatting fixes.
        (PTA_HLE): Formatting fix.
        (PTA_PRFCHW): New.
        (ix86_option_override_internal): Handle new option.
        (ix86_valid_target_attribute_inner_p): Add OPT_mprfchw.
        * config/i386/i386.h (TARGET_PRFCHW): New.
        * config/i386/i386.md (prefetch): Enable for TARGET_PRFCHW.
        * config/i386/i386.opt (mprfchw): New.
        * config/i386/mm3dnow.h: Move _m_prefetchw from here to
        prfchwintrin.h.
        * config/i386/x86intrin.h: Include prfchwintrin.h.

testsuite/Changelog entry:
2012-07-24  Kirill Yukhin  <kirill.yukhin@intel.com>
            Michael Zolotukhin  <michael.v.zolotukhin@intel.com>

        * gcc.target/i386/prefetchw-1.c: New.
        * gcc.target/i386/sse-12.c: Add -mprfchw.
        * gcc.target/i386/sse-13.c: Ditto.
        * gcc.target/i386/sse-14.c: Ditto.
        * g++.dg/other/i386-2.C: Ditto.
        * g++.dg/other/i386-3.C: Ditto.




Co-Authored-By: Michael Zolotukhin <michael.v.zolotukhin@intel.com>

From-SVN: r189844