On Mon, Mar 07, 2022 at 11:51:50AM -0000, Roger Sayle wrote:
> I agree that for completeness similar peepholes handling inserts into
> SImode would be a good thing, but these wouldn't be restricted by
> TARGET_64BIT and would therefore require additional -m32 testing.
> The DImode peepholes I can justify for stage4 as PR tree-opt/98335
> is a regression, SImode peepholes would be more of a "leap of faith".
> If you’d be willing to accept a patch without a testcase, let me know.
For testcase, wouldn't something like:
struct Data { char a; short b; };
char c;
void val(void) {
__asm__ __volatile__ ("" : : "r" ((struct Data) { c } ));
}
do it?
Jakub
