https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110897
--- Comment #9 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
The name is correct, since the same pattern works for uint32 but fail to work
for uint16
I checked the build file:
CODE_FOR_vlshrrvvm1hi3 = 10350,
>> Well, that means we do not have a vector mode for HImode elements?!
We have vector mode for HImode.
You can see CODE_FOR_vlshrrvvm1hi3, the "rvvm1hi" is vector HImode.
Consider this following case:
#define TEST2_TYPE(TYPE) \
__attribute__((noipa)) \
void vshiftr_##TYPE (TYPE *dst, TYPE *a, TYPE *b, int n) \
{ \
for (int i = 0; i < n; i++) \
dst[i] = (a[i]) >> b[i]; \
}
#define TEST_ALL() \
TEST2_TYPE(uint32_t) \
TEST2_TYPE(uint16_t) \
TEST_ALL()
rvv.c:15:1: missed: statement clobbers memory: vect__4.9_52 = .MASK_LEN_LOAD
(vectp_a.7_50, 32B, { -1, ... }, _65, 0);
rvv.c:15:1: missed: statement clobbers memory: vect__6.12_56 = .MASK_LEN_LOAD
(vectp_b.10_54, 32B, { -1, ... }, _65, 0);
rvv.c:15:1: missed: statement clobbers memory: .MASK_LEN_STORE
(vectp_dst.14_59, 32B, { -1, ... }, _65, 0, vect__8.13_57);
rvv.c:15:1: missed: couldn't vectorize loop
rvv.c:15:1: missed: not vectorized: no vectype for stmt: _4 = *_3;
scalar_type: uint16_t
uint32_t can vectorize but uint16_t fail, we have defined both vector SImode
and
HImode for "vlshr$a3" optab.
I seems that we must support widen shift pattern in RISCV port even though we
don't have widen shift instructions ?
