zclllyybb commented on code in PR #31583:
URL: https://github.com/apache/doris/pull/31583#discussion_r1509922550
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be/src/vec/functions/round.h:
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@@ -217,75 +230,30 @@ class BaseFloatRoundingComputation<Float64> {
static VectorType divide(VectorType val, VectorType scale) { return
_mm_div_pd(val, scale); }
template <RoundingMode mode>
static VectorType apply(VectorType val) {
- return _mm_round_pd(val, int(mode));
+ if constexpr (mode != RoundingMode::Round) {
+ return _mm_round_pd(val, int(mode));
Review Comment:
we could use a marco to check the SSE4.1 enable state. and use the most
proper simd instructions with `_mm` or `_mm256`. u can see the similar usage in
our code.
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