[LLVMdev] contraction of FP operations

[Alasdair Grant]

Hi,

clang deals with #pragma STDC FP_CONTRACT and updates the setting of
FPOptions::fp_contract, but how is this made use of in the back end?
Is there some way to find out, for any given pair of floating-point
operations, whether they can be contracted into one (according to
their local pragma settings), or is this not yet implemented?

Al

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