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[MIT-Scheme-devel] new microcode with C back end

From: Taylor R Campbell
Subject: [MIT-Scheme-devel] new microcode with C back end
Date: Wed, 27 Dec 2006 10:20:32 +0000
User-agent: IMAIL/1.21; Edwin/3.116; MIT-Scheme/7.7.90.+

The C back end on PowerPC fails to compile early on with the new
microcode, due to the absence of a PC_ZERO_BITS macro in confshared.h.
It seems that the definition was moved from the cmpauxmd/*.h files to
confshared.h, but without any definition for the C back end, or
PowerPC.  On the PowerPC it ought to be 2, but the C back end formerly
automatically computed the value for whatever platform it ran on; is
there any reason that it no longer does so in the new microcode?  (It
is too late tonight for me to understand the relevant code.)

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