[PATCH] get rid of POPCOUNTCST* macros in libgcc2.c

Hi @ll, the "magic" constants 0x55...55, 0x33...33, 0x0f...0f and 0x01...01 used in the popcountsi2() and popcountdi2() functions defined in libgcc2.c are currently generated iterative via the 4 macros POPCOUNTCST, POPCOUNTCST8, POPCOUNTCST4 and POPCOUNTCST2 from 2 nibbles over 4 and 8 nibbles to

[PATCH] Better __ashlDI3, __ashrDI3 and __lshrDI3 functions, plus fixed __bswapsi2 function

The implementation of the __ashlDI3(), __ashrDI3() and __lshrDI3() functions is rather bad, it yields bad machine code at least on i386 and AMD64. Since GCC knows how to shift integers twice the register size these functions can be written as one-liners. The implementation of the __bswapsi2() func