[PATCH] Clarified the direction rounding occurs in uitofp and sitofp is unspecified

[Steve Canon]

I'm uncomfortable with this change, as I believe that it makes the llvm conversions incompatible with IEEE-754 conversion (which round according to the dynamic rounding mode unless they're in a (language defined) block with static rounding attribute).

I would much prefer that we say something like "On targets with dynamic rounding modes, [su]itofp rounds according to the dynamic mode.  On targets without dynamic rounding, [su]itofp uses default rounding."


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  rL LLVM

http://reviews.llvm.org/D6942

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