Hi,
On Tue, May 08, 2018 at 05:04:33PM -0700, Carl Love wrote:
> On Tue, 2018-05-08 at 11:24 -0500, Segher Boessenkool wrote:
> > What ISA version is required for the TH field to do anything? Will
> > it work on older machines too (just ignored)? What assembler version
> > is required?
>
> I we
Segher:
On Tue, 2018-05-08 at 11:24 -0500, Segher Boessenkool wrote:
> What ISA version is required for the TH field to do anything? Will
> it work on older machines too (just ignored)? What assembler version
> is required?
I went back and checked. The mnemonics for
dcbtt RA,RB dcbt for T
Hi Carl,
On Mon, May 07, 2018 at 01:34:55PM -0700, Carl Love wrote:
> This patch maps n2=0 to generate the dcbtstt mnemonic (dcbst for TH
> value of 0b1) for a write prefetch and dcbtst for n2 in range
> [1,3].
>
> The dcbtt mnemonic (dcbt for TH value of 0b1) is generated for a
> read
GCC maintainers:
The architecture independent builtin __builtin_prefetch() is defined
as:
void __builtin_prefetch (const void *addr, int n1, int n2)
n1 -
prefetch read = 0, prefetch write = 1
n2 - temporal locality 0 to 3. No
temporal locality = 0, high temporal
locality = 3.
The impleme
