https://github.com/jwnrt converted_to_draft
https://github.com/llvm/llvm-project/pull/134254
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jwnrt wrote:
Sorry for the long delay.
I think you're right that there's no difference to the RTL. I need to test this
properly and learn more about address spaces. In particular, I think address
space zero has some special casing around it being the generic / fallback
address space that inte
benshi001 wrote:
Is this change necessary? I find there is not change in the size of addrspace
0/1 pointers, before and after your patch.
for program
```c++
clang a.c --target=avr -mmcu=atmega2560
int gf(int a);
int (*p)(int) = gf;
int f;
int *p1 = &f;
```
the generated assembly is unique by
jwnrt wrote:
CC @benshi001
To be 100% honest I haven't tested this on AVR silicon yet. My motivation for
the change is to allow for non-zero data address spaces in Rust which parses
these LLVM address spaces, but would then use both 64-bit and 16-bit pointers
for AVR. Apologies if this is bad
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benshi001 wrote:
> CC @benshi001
>
> To be 100% honest I haven't tested this on AVR silicon yet. My motivation for
> the change is to allow for non-zero data address spaces in Rust which parses
> these LLVM data format specs, but would then use both 64-bit and 16-bit
> pointers for AVR. Apolo
llvmbot wrote:
@llvm/pr-subscribers-clang
Author: James Wainwright (jwnrt)
Changes
AVR uses separate address spaces for data (0) and program (1) memory, however
pointer layout is only defined for address space 0 in the data layout string.
The `p[n]` directive defines pointer layouts wher
llvmbot wrote:
@llvm/pr-subscribers-llvm-transforms
Author: James Wainwright (jwnrt)
Changes
AVR uses separate address spaces for data (0) and program (1) memory, however
pointer layout is only defined for address space 0 in the data layout string.
The `p[n]` directive defines pointer la
https://github.com/jwnrt created
https://github.com/llvm/llvm-project/pull/134254
AVR uses separate address spaces for data (0) and program (1) memory, however
pointer layout is only defined for address space 0 in the data layout string.
The `p[n]` directive defines pointer layouts where `n` d
