Matt Arsenault bf0db918b2 R600: Implement getRecipEstimate ...

This requires a new hook to prevent expanding sqrt in terms
of rsqrt and reciprocal. v_rcp_f32, v_rsq_f32, and v_sqrt_f32 are
all the same rate, so this expansion would just double the number
of instructions and cycles.

llvm-svn: 225828

2015-01-13 20:53:23 +00:00

58 KiB

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