added support for fast approximate rsqrt(double). Provide 16 digit accurancy but is over 3x faster than 1/sqrt(double)

2014-02-04 14:44:54 +01:00
parent b0753dc93d
commit eb1a495a7a
5 changed files with 48 additions and 24 deletions
--- a/builtins/target-avx1-i64x4base.ll
+++ b/builtins/target-avx1-i64x4base.ll
@@ -511,3 +511,5 @@ define <4 x double> @__max_varying_double(<4 x double>, <4 x double>) nounwind r
  ret <4 x double> %call
 }

+rsqrt_double()
+rcp_double()