diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2020-06-16 10:32:26 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-06-16 10:32:26 +0100 |
| commit | 9546ca5998d3cbd98a81b2d46a2e92a11b0f78a4 (patch) | |
| tree | bcf3325ced48a3eb9a4a898722146e9448038a60 /target/arm/neon-dp.decode | |
| parent | 3a1d9eb07b767a7592abca642af80906f9eab0ed (diff) | |
target/arm: Convert Neon 3-reg-diff saturating doubling multiplies
Convert the Neon 3-reg-diff insns VQDMULL, VQDMLAL and VQDMLSL:
these are all saturating doubling long multiplies with a possible
accumulate step.
These are the last insns in the group which use the pass-over-each
elements loop, so we can delete that code.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/arm/neon-dp.decode')
| -rw-r--r-- | target/arm/neon-dp.decode | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode index 1da492df14..65ea30d3ed 100644 --- a/target/arm/neon-dp.decode +++ b/target/arm/neon-dp.decode @@ -454,10 +454,16 @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm VMLAL_S_3d 1111 001 0 1 . .. .... .... 1000 . 0 . 0 .... @3diff VMLAL_U_3d 1111 001 1 1 . .. .... .... 1000 . 0 . 0 .... @3diff + VQDMLAL_3d 1111 001 0 1 . .. .... .... 1001 . 0 . 0 .... @3diff + VMLSL_S_3d 1111 001 0 1 . .. .... .... 1010 . 0 . 0 .... @3diff VMLSL_U_3d 1111 001 1 1 . .. .... .... 1010 . 0 . 0 .... @3diff + VQDMLSL_3d 1111 001 0 1 . .. .... .... 1011 . 0 . 0 .... @3diff + VMULL_S_3d 1111 001 0 1 . .. .... .... 1100 . 0 . 0 .... @3diff VMULL_U_3d 1111 001 1 1 . .. .... .... 1100 . 0 . 0 .... @3diff + + VQDMULL_3d 1111 001 0 1 . .. .... .... 1101 . 0 . 0 .... @3diff ] } |