> -Original Message-
> From: Alessandro Di Federico
> Sent: Thursday, March 18, 2021 12:27 PM
> To: Taylor Simpson
> Cc: Richard Henderson ; qemu-
> de...@nongnu.org; Brian Cain ; bab...@rev.ng;
> ni...@rev.ng; phi...@redhat.com
> Subject: Re: [PATCH v2 02/10
On Wed, 10 Mar 2021 15:48:14 +
Taylor Simpson wrote:
> Which instructions require this? There must be an attribute that we
> could check to see if it is needed before emitting the TCG.
The following should be an example of an instruction that requires
zero-initialization:
/*
ect: Re: [PATCH v2 02/10] target/hexagon: import README for idef-
> parser
>
> On 2/25/21 7:18 AM, Alessandro Di Federico wrote:
> > +Now let's have a quick look at the generated code, line by line.
> > +
> > +::
> > +
> > + tcg_gen_movi_i32(RdV, 0);
> >
On Thu, 25 Feb 2021 12:20:53 -0800
Richard Henderson wrote:
> This is odd, as is the description of why. Yes, if RdV is read
> without initialization, TCG middle-end will abort (at least with
> --enable-debug-tcg enabling the assertions). But you've just said
> that "no reading" was found.
On 2/25/21 7:18 AM, Alessandro Di Federico wrote:
> +Now let's have a quick look at the generated code, line by line.
> +
> +::
> +
> + tcg_gen_movi_i32(RdV, 0);
> +
> +This code starts by initializing ``RdV``, since reading from that register
> +without initialization will cause a segmentation
From: Alessandro Di Federico
Signed-off-by: Alessandro Di Federico
---
target/hexagon/README | 5 +
target/hexagon/idef-parser/README.rst | 447 ++
2 files changed, 452 insertions(+)
create mode 100644 target/hexagon/idef-parser/README.rst
diff --git
