On Thu, Aug 3, 2023 at 9:15 PM Roger Sayle wrote:
>
>
> This patch is inspired by Jakub's work on PR rtl-optimization/110717.
> The bitfield example described in comment #2, looks like:
>
> struct S { __int128 a : 69; };
> unsigned type bar (struct S *p) {
> return p->a;
> }
>
> which on x86_64
This patch is inspired by Jakub's work on PR rtl-optimization/110717.
The bitfield example described in comment #2, looks like:
struct S { __int128 a : 69; };
unsigned type bar (struct S *p) {
return p->a;
}
which on x86_64 with -O2 currently generates:
bar:movzbl 8(%rdi), %ecx
