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* config/i386/i386.h (CLASS_MAX_NREGS): Also handle XCmode. (UNITS_PER_WORD): Define only when IN_LIBGCC2 is undefined. (MOVE_MAX_PIECES): Redefine using UNITS_PER_WORD. (ASM_OUTPUT_AVX_PREFIX): Simplify pointer addition. From-SVN: r164644
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