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Commit 16bc07ac authored by Matt Arsenault's avatar Matt Arsenault
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AMDGPU: Select f64 fmul by negative power of 2 to ldexp 

Select fmul x, -K -> ldexp(-x, log2(fabsK))
Select fmul fabs(x), -K -> ldexp(-|x|, log2(fabsK))

https://reviews.llvm.org/D158173
parent 4c4ff503
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