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target/ppc: Add helper for fmuls

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Use float64r32_mul.  Fixes a double-rounding issue with performing
the compuation in float64 and then rounding afterward.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211119160502.17432-32-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Richard Henderson 2021-12-17 17:57:16 +01:00 • committed by Cédric Le Goater
parent d9e792a1c1
commit 7f87214e3b
3 changed files with 17 additions and 7 deletions
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target/ppc/helper.h
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@ -98,6 +98,7 @@ DEF_HELPER_3(fadds, f64, env, f64, f64)
DEF_HELPER_3(fsub, f64, env, f64, f64)
DEF_HELPER_3(fsubs, f64, env, f64, f64)
DEF_HELPER_3(fmul, f64, env, f64, f64)
DEF_HELPER_3(fmuls, f64, env, f64, f64)
DEF_HELPER_3(fdiv, f64, env, f64, f64)
DEF_HELPER_3(fdivs, f64, env, f64, f64)
DEF_HELPER_4(fmadd, i64, env, i64, i64, i64)