[cfe-commits] [PATCH 1/2] Multiprecision Arithmetic Builtins

[Michael Gottesman]

This patch is the first of two patches which adds support for Multiprecision arithmetic to clang via builtins. This specific patch contains the addition builtins. I will send the other once I get this one in.

*NOTE* In case you are wondering I am also preparing patches for LLVM to perform the proper optimizations in the backend to turn this into the SDNodes addc/adde/subc/sube so a chain of these builtins are lowered properly.

Please Review!

Michael

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