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 before/after applying your patch.
```assembly
.type p,@object ; @p
.data
.globl p
p:
.short pm(gf)
.size p, 2
.type f,@object ; @f
.section .bss,"aw",@nobits
.globl f
f:
.short 0 ; 0x0
.size f, 2
.type p1,@object ; @p1
.data
.globl p1
p1:
.short f
.size p1, 2
```
https://github.com/llvm/llvm-project/pull/134254
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