junrushao1994 commented on a change in pull request #9041:
URL: https://github.com/apache/tvm/pull/9041#discussion_r713522208
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File path: src/tir/schedule/primitive/loop_transformation.cc
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@@ -482,7 +482,7 @@ StmtSRef Fuse(ScheduleState self, const Array<StmtSRef>&
loop_srefs) {
Array<PrimExpr> substitute_value;
substitute_value.resize(loops.size());
PrimExpr tot = fused_var;
- for (int i = static_cast<int>(loops.size()) - 1; i >= 0; i--) {
+ for (int i = loops.size() - 1; i >= 0; i--) {
Review comment:
No we should keep with `static_cast` instead. As a principle, `size_t`
is all evil and should be avoided unless we have good reasons. In our
particular case, if `loops.size()` is 0, underflow of `size_t` it may cause
tremendous trouble. Even if by reading around we might have the assumption that
`loops.size() > 0`, it is still not as convenient as just casting to signed
integers.
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