在 2023/9/9 下午3:06, Xi Ruoyao 写道:
On Sat, 2023-09-09 at 15:04 +0800, chenglulu wrote:
Hi,RuoYao:
I think the test example memcpy-vec-3.c submitted in r14-3818 is
implemented incorrectly.
The 16-byte length in this test example will cause can_move_by_pieces to
return true when with '-mstrict-align', so no vector load instructions
will be generated.
Yes, in this case we cannot use vst because we don't know if b is
aligned. Thus a { scan-assembler-not "vst" } guarantees that.
Or am I understanding something wrongly here?
Well, what I mean is that even if '-mno-strict-align' is used here,
vst/vld will not be used,
so this test example cannot test what we want to test.
