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[Intrinsic] Signed Fixed Point Multiplication Intrinsic

Description

[Intrinsic] Signed Fixed Point Multiplication Intrinsic

Add an intrinsic that takes 2 signed integers with the scale of them provided
as the third argument and performs fixed point multiplication on them.

This is a part of implementing fixed point arithmetic in clang where some of
the more complex operations will be implemented as intrinsics.

Differential Revision: https://reviews.llvm.org/D54719

Details

Committed
leonardchanDec 11 2018, 10:29 PM
Differential Revision
D54719: [Intrinsic] Signed Fixed Point Multiplication Intrinsic
Parents
rL348911: [CodeGen] Fix -DBUILD_SHARED_LIBS=on build after rC348907
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