On 6/10/21 9:29 PM, Richard Henderson wrote:
On 6/9/21 6:43 PM, LIU Zhiwei wrote:
1)First a multiply instruction, if the source value big enough, it
will return a result with some bits not zero in MSW 32-bit.
Multiply is fine. Input bits outside the low 32 cannot appear in the
low 32 of th
On 6/9/21 6:43 PM, LIU Zhiwei wrote:
1)First a multiply instruction, if the source value big enough, it will return
a result with some bits not zero in MSW 32-bit.
Multiply is fine. Input bits outside the low 32 cannot appear in the low 32 of
the output. Multiply-high-part on the other hand
On 6/7/21 11:52 PM, Richard Henderson wrote:
On 6/6/21 8:07 PM, LIU Zhiwei wrote:
Hi Alistair,
As I see, we are moving on to remove TARGET_RISCV64 macro.
I have some questions:
1) Which tcg op should use when translate an instruction for 32bit
cpu. The tcg_*_i64, tcg_*_i32 or tcg_*_tl?
On 6/7/21 2:22 AM, LIU Zhiwei wrote:
I am implementing RVP to get rid of TARGET_RISCV64. After we have recognized an
instruction only used by a 32-bit CPU,
1) Should we only use the lowest 32bits of the 64bits register in RV64?
TCGv s;
TCGv_i32 s32;
s = tcg_new_temp();
s32 = tcg_new_temp_i32
On 6/6/21 8:07 PM, LIU Zhiwei wrote:
Hi Alistair,
As I see, we are moving on to remove TARGET_RISCV64 macro.
I have some questions:
1) Which tcg op should use when translate an instruction for 32bit cpu. The
tcg_*_i64, tcg_*_i32 or tcg_*_tl?
You use *_tl, because that's the size of the fi
On 6/7/21 2:22 PM, Alistair Francis wrote:
On Mon, Jun 7, 2021 at 1:09 PM LIU Zhiwei wrote:
Hi Alistair,
As I see, we are moving on to remove TARGET_RISCV64 macro.
I have some questions:
1) Which tcg op should use when translate an instruction for 32bit cpu.
The tcg_*_i64, tcg_*_i32 or t
On Mon, Jun 7, 2021 at 1:09 PM LIU Zhiwei wrote:
>
> Hi Alistair,
>
> As I see, we are moving on to remove TARGET_RISCV64 macro.
>
> I have some questions:
>
> 1) Which tcg op should use when translate an instruction for 32bit cpu.
> The tcg_*_i64, tcg_*_i32 or tcg_*_tl?
> I see some API such as
Hi Alistair,
As I see, we are moving on to remove TARGET_RISCV64 macro.
I have some questions:
1) Which tcg op should use when translate an instruction for 32bit cpu.
The tcg_*_i64, tcg_*_i32 or tcg_*_tl?
I see some API such as gen_get_gpr that are using the tcg_*_tl. But I am
not sure if i
