diff options
| author | Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> | 2022-10-19 09:50:29 -0300 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-10-28 13:15:22 -0300 |
| commit | dc46167a2225d3c0861cd4fcbc350e3e0e89bc61 (patch) | |
| tree | 863ec5f60b2a8874a1d76fd5508040d810f0ab62 /target/ppc/insn32.decode | |
| parent | b35bf5f2d759d97652b4acd96e62329a1657f3cb (diff) | |
target/ppc: Moved VMLADDUHM to decodetree and use gvec
This patch moves VMLADDUHM to decodetree a creates a gvec implementation
using mul_vec and add_vec.
rept loop master patch
8 12500 0,01810500 0,00903100 (-50.1%)
25 4000 0,01739400 0,00747700 (-57.0%)
100 1000 0,01843600 0,00901400 (-51.1%)
500 200 0,02574600 0,01971000 (-23.4%)
2500 40 0,05921600 0,07121800 (+20.3%)
8000 12 0,15326700 0,21725200 (+41.7%)
The significant difference in performance when REPT is low and LOOP is
high I think is due to the fact that the new implementation has a higher
translation time, as when using a helper only 5 TCGop are used but with
the patch a total of 10 TCGop are needed (Power lacks a direct mul_vec
equivalent so this instruction is implemented with the help of 5 others,
vmuleu, vmulou, vmrgh, vmrgl and vpkum).
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-2-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'target/ppc/insn32.decode')
| -rw-r--r-- | target/ppc/insn32.decode | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index 70a3b4de5e..9ba1689230 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -693,6 +693,8 @@ VMSUMUHS 000100 ..... ..... ..... ..... 100111 @VA VMSUMCUD 000100 ..... ..... ..... ..... 010111 @VA VMSUMUDM 000100 ..... ..... ..... ..... 100011 @VA +VMLADDUHM 000100 ..... ..... ..... ..... 100010 @VA + ## Vector String Instructions VSTRIBL 000100 ..... 00000 ..... . 0000001101 @VX_tb_rc |