diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2019-06-13 15:37:41 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-06-17 15:23:32 +0100 |
| commit | b5181cf53547c7fb1b54db6d159c39a1e88f9eb6 (patch) | |
| tree | 50f3ec890ff48b5237f39a69ea48fca6d8f939cf | |
| parent | 245f69ada691a5d1d90ec439be9d4bb5d5706ba6 (diff) | |
arm.risu: Avoid VTRN with Vd == Vm
The AArch32 VTRN instruction is specified to give an UNKNOWN
result if Vd and Vm are the same register; avoid generating
this in risu output, as we already do for VUZP and VZIP.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190613143741.15128-1-peter.maydell@linaro.org
| -rw-r--r-- | arm.risu | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -613,7 +613,8 @@ VCLT0 A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 100 q m 0 vm:4 VABS A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 110 q m 0 vm:4 VNEG A1 1111 0011 1 d 11 sz:2 01 vd:4 0 f 111 q m 0 vm:4 VSWP A1 1111 0011 1 d 11 sz:2 10 vd:4 00000 q m 0 vm:4 -VTRN A1 1111 0011 1 d 11 sz:2 10 vd:4 00001 q m 0 vm:4 +# d == m gives UNKNOWN results, so avoid it +VTRN A1 1111 0011 1 d 11 sz:2 10 vd:4 00001 q m 0 vm:4 { ($d != $m) || ($vd != $vm); } # d == m gives UNKNOWN results, so avoid it VUZP A1 1111 0011 1 d 11 sz:2 10 vd:4 00010 q m 0 vm:4 { ($d != $m) || ($vd != $vm); } VZIP A1 1111 0011 1 d 11 sz:2 10 vd:4 00011 q m 0 vm:4 { ($d != $m) || ($vd != $vm); } |