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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-04-17 07:18:01 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2018-05-01 11:41:56 -0700 |
| commit | d103021269ca9307ed7ca0d845d2b9e6c387509a (patch) | |
| tree | 6a21957e57bb2375414629f1506965689f238216 /tcg/README | |
| parent | 26bd8d98c4b3284a4c6fe3b67c98b1edd00e9beb (diff) | |
tcg: Document INDEX_mul[us]h_*
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/README')
| -rw-r--r-- | tcg/README | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tcg/README b/tcg/README index bb2ea5121b..a5237a9edb 100644 --- a/tcg/README +++ b/tcg/README @@ -431,6 +431,14 @@ double-word product T0. The later is returned in two single-word outputs. Similar to mulu2, except the two inputs T1 and T2 are signed. +* mulsh_i32/i64 t0, t1, t2 +* muluh_i32/i64 t0, t1, t2 + +Provide the high part of a signed or unsigned multiply, respectively. +If mulu2/muls2 are not provided by the backend, the tcg-op generator +can obtain the same results can be obtained by emitting a pair of +opcodes, mul+muluh/mulsh. + ********* Memory Barrier support * mb <$arg> |