vinx13 commented on code in PR #12370:
URL: https://github.com/apache/tvm/pull/12370#discussion_r948370738
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src/tir/transforms/bf16_legalize.cc:
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@@ -88,6 +89,26 @@ DEFINE_BIOP_EXPR_MUTATE_WITH_TYPE_MATCH(LENode, operator<=,
false)
DEFINE_BIOP_EXPR_MUTATE_WITH_TYPE_MATCH(GTNode, operator>, false)
DEFINE_BIOP_EXPR_MUTATE_WITH_TYPE_MATCH(GENode, operator>=, false)
+PrimExpr BF16PromoteRewriter::VisitExpr_(const CallNode* op) {
+ Array<PrimExpr> args;
+ for (auto& arg : op->args) {
+ PrimExpr x = this->VisitExpr(arg);
+ if (x.dtype().is_bfloat16()) {
+ DataType fp32_dtype(kDLFloat, 32, x.dtype().lanes());
+ args.push_back(Cast(fp32_dtype, {x}, op->span));
+ } else {
+ args.push_back(x);
+ }
+ }
+ if (op->dtype.is_bfloat16()) {
+ DataType fp32_dtype(kDLFloat, 32, op->dtype.lanes());
+ PrimExpr result_fp32 = Call(fp32_dtype, op->op, {args}, op->span);
+ return Cast(op->dtype, {result_fp32}, op->span);
+ } else {
+ return Call(op->dtype, op->op, {args}, op->span);
Review Comment:
nit: brackets not needed
```suggestion
return Call(op->dtype, op->op, args, op->span);
```
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