Jan Górski ff687af04f [clang][CodeGen] Add range metadata for atomic load of boolean type. #131476 (#133546) ...

Fixes #131476.

For `x86_64` it folds
```
movzbl	t1(%rip), %eax
andb	$1, %al
```
into
```
movzbl	t1(%rip), %eax
```
when run: `clang -S atomic-ops-load.c -o atomic-ops-load.s -O1
--target=x86_64`.

But for riscv replaces:
```
lb	a0, %lo(t1)(a0)
andi	a0, a0, 1
```
with
```
lb	a0, %lo(t1)(a0)
zext.b	a0, a0
``` 
when run: `clang -S atomic-ops-load.c -o atomic-ops-load.s -O1
--target=riscv64`.

2025-04-14 14:26:10 -07:00

88 KiB

Raw Blame History

View Raw