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

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Evghenii
2014-02-04 14:44:54 +01:00
parent b0753dc93d
commit eb1a495a7a
5 changed files with 48 additions and 24 deletions
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9
builtins/target-generic-common.ll
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@@ -191,13 +191,14 @@ declare <WIDTH x double> @__max_varying_double(<WIDTH x double>,
declare float @__rsqrt_uniform_float(float) nounwind readnone
declare float @__rcp_uniform_float(float) nounwind readnone
declare double @__rsqrt_uniform_double(double) nounwind readnone
declare double @__rcp_uniform_double(double) nounwind readnone
declare double @__rsqrt_uniform_double(double, <WIDTH x MASK>) nounwind readnone
declare double @__rcp_uniform_double(double, <WIDTH x MASK>) nounwind readnone
declare float @__sqrt_uniform_float(float) nounwind readnone
declare <WIDTH x float> @__rcp_varying_float(<WIDTH x float>) nounwind readnone
declare <WIDTH x float> @__rsqrt_varying_float(<WIDTH x float>) nounwind readnone
declare <WIDTH x double> @__rcp_varying_double(<WIDTH x double>) nounwind readnone
declare <WIDTH x double> @__rsqrt_varying_double(<WIDTH x double>) nounwind readnone
declare <WIDTH x double> @__rcp_varying_double(<WIDTH x double>, <WIDTH x MASK>) nounwind readnone
declare <WIDTH x double> @__rsqrt_varying_double(<WIDTH x double>, <WIDTH x MASK>) nounwind readnone
declare <WIDTH x float> @__sqrt_varying_float(<WIDTH x float>) nounwind readnone
declare double @__sqrt_uniform_double(double) nounwind readnone