ec58a1093d
builtins.c: Allow MD backend to prevent the optimization of a bcopy() or memmove() of size 1 (the size being known at compile-time) into an inline mempcpy() expansion, which will in turn expand into a byte load and store operation. This expansion loses precious address alignment information at some point (because everybody knows that you can read a byte from any address, right?), and this loses bigtime on strict alignment platforms which lack the ability to accesse bytes directly, such as alpha (unless compiling with -mbwx and runnning on a BWX-capable cpu). config/alpha: Require alignment of local arrays on word boundaries, and enable the builtins.c `one-byte memcpy' workaround. ok espie@ |
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