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target/sparc: Fix helper_fmul8ulx16

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This operation returns the high 16 bits of a 24-bit multiply
that has been sign-extended to 32 bits.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-05-24 22:04:03 -07:00
parent 04d5bf3041
commit b5c960470d
1 changed files with 4 additions and 4 deletions
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8
target/sparc/vis_helper.c
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@ -174,10 +174,10 @@ uint64_t helper_fmul8ulx16(uint64_t src1, uint64_t src2)
s.ll = src1;
d.ll = src2;
d.VIS_W64(0) = do_ms16b(s.VIS_B64(0), d.VIS_SW64(0));
d.VIS_W64(1) = do_ms16b(s.VIS_B64(2), d.VIS_SW64(1));
d.VIS_W64(2) = do_ms16b(s.VIS_B64(4), d.VIS_SW64(2));
d.VIS_W64(3) = do_ms16b(s.VIS_B64(6), d.VIS_SW64(3));
d.VIS_W64(0) = (s.VIS_B64(0) * d.VIS_SW64(0) + 0x8000) >> 16;
d.VIS_W64(1) = (s.VIS_B64(2) * d.VIS_SW64(1) + 0x8000) >> 16;
d.VIS_W64(2) = (s.VIS_B64(4) * d.VIS_SW64(2) + 0x8000) >> 16;
d.VIS_W64(3) = (s.VIS_B64(6) * d.VIS_SW64(3) + 0x8000) >> 16;
return d.ll;
}