Information on [PATCH] disable some features in fold-const.c

This patch saved ca. 0.15% of code (measured against GCC 3.4 20031014 without the patch) by disabling some features in tree_swap_operands_p in the fold-const.c file.

See the corresponding mail.

See the size reduction measured with CSiBE for arm, i386, m68k, mips and ppc.

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