[libclc] [libclc] Improve performance and precision of reciprocal functions (PR #203805)

[Wenju He via cfe-commits]

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@@ -231,4 +231,5 @@ libclc_set_source_options(-fapprox-func
 libclc_set_source_options(-cl-fp32-correctly-rounded-divide-sqrt
   math/clc_div_cr.cl
   math/clc_sqrt_cr.cl
+  math/clc_tanpi.cl
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wenju-he wrote:

This change is not obvious from the commit message. Does __clc_tanpi use __clc_recip_fast?

https://github.com/llvm/llvm-project/pull/203805