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[TIR] Implement max/min_value for fp8 data types #16723

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Merged
Hzfengsy merged 1 commit into from
Mar 15, 2024
Merged

[TIR] Implement max/min_value for fp8 data types #16723

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12 changes: 12 additions & 0 deletions src/tir/op/op.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,12 @@ PrimExpr max_value(const DataType& dtype, Span span) {
}
} else if (dtype.is_bfloat16()) {
return FloatImm(dtype, std::numeric_limits<float>::max(), span);
} else if (dtype.is_float8()) {
if (dtype.code() == DataType::TypeCode::kE5M2Float) {
return FloatImm(dtype, 57344.0, span);
} else if (dtype.code() == DataType::TypeCode::kE4M3Float) {
return FloatImm(dtype, 448.0, span);
}
}
LOG(FATAL) << "Cannot decide max_value for type" << dtype;
}
Expand Down Expand Up @@ -296,6 +302,12 @@ PrimExpr min_value(const DataType& dtype, Span span) {
}
} else if (dtype.is_bfloat16()) {
return FloatImm(dtype, std::numeric_limits<float>::lowest(), span);
} else if (dtype.is_float8()) {
if (dtype.code() == DataType::TypeCode::kE5M2Float) {
return FloatImm(dtype, -57344.0, span);
} else if (dtype.code() == DataType::TypeCode::kE4M3Float) {
return FloatImm(dtype, -448.0, span);
}
}
LOG(FATAL) << "Cannot decide min_value for type" << dtype;
}
Expand Down