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target-ppc: VSX Stage 4: Add Scalar SP Fused Multiply-Adds

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This patch adds the Single Precision VSX Scalar Fused Multiply-Add
instructions: xsmaddasp, xsmaddmsp, xssubasp, xssubmsp, xsnmaddasp,
xsnmaddmsp, xsnmsubasp, xsnmsubmsp.

The existing VSX_MADD() macro is modified to support rounding of the
intermediate double precision result to single precision.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-01-15 08:10:39 -06:00 • committed by Alexander Graf
parent 968e76bcab
commit f53f81e08b
3 changed files with 75 additions and 27 deletions
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8
target-ppc/helper.h
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@ -293,6 +293,14 @@ DEF_HELPER_2(xsdivsp, void, env, i32)
DEF_HELPER_2(xsresp, void, env, i32)
DEF_HELPER_2(xssqrtsp, void, env, i32)
DEF_HELPER_2(xsrsqrtesp, void, env, i32)
DEF_HELPER_2(xsmaddasp, void, env, i32)
DEF_HELPER_2(xsmaddmsp, void, env, i32)
DEF_HELPER_2(xsmsubasp, void, env, i32)
DEF_HELPER_2(xsmsubmsp, void, env, i32)
DEF_HELPER_2(xsnmaddasp, void, env, i32)
DEF_HELPER_2(xsnmaddmsp, void, env, i32)
DEF_HELPER_2(xsnmsubasp, void, env, i32)
DEF_HELPER_2(xsnmsubmsp, void, env, i32)
DEF_HELPER_2(xvadddp, void, env, i32)
DEF_HELPER_2(xvsubdp, void, env, i32)