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| 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/int_helper.c | |
| parent | b35bf5f2d759d97652b4acd96e62329a1657f3cb (diff) | |
| download | qemu-dc46167a2225d3c0861cd4fcbc350e3e0e89bc61.zip qemu-dc46167a2225d3c0861cd4fcbc350e3e0e89bc61.tar.gz qemu-dc46167a2225d3c0861cd4fcbc350e3e0e89bc61.tar.bz2 | |
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/int_helper.c')
| -rw-r--r-- | target/ppc/int_helper.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 6960961..0d25000 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -974,7 +974,8 @@ void helper_vmhraddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, } } -void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c) +void helper_VMLADDUHM(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c, + uint32_t v) { int i; |