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factoring out logic to check for overflows during coercions

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This commit is contained in:
Vern Paxson 2021-09-02 18:17:29 -07:00
parent 9757d37332
commit a67897135e
8 changed files with 89 additions and 37 deletions
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15
src/script_opt/Expr.cc
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@ -2134,8 +2134,6 @@ ExprPtr ArithCoerceExpr::Reduce(Reducer* c, StmtPtr& red_stmt)
if ( ! op->IsReduced(c) )
op = op->ReduceToSingleton(c, red_stmt);
auto t = type->InternalType();
if ( op->Tag() == EXPR_CONST )
{
const auto& t = GetType();
@ -2153,9 +2151,18 @@ ExprPtr ArithCoerceExpr::Reduce(Reducer* c, StmtPtr& red_stmt)
if ( c->Optimizing() )
return ThisPtr();
auto bt = op->GetType()->InternalType();
const auto& ot = op->GetType();
auto bt = ot->InternalType();
auto tt = type->InternalType();
if ( t == bt )
if ( ot->Tag() == TYPE_VECTOR )
{
bt = ot->Yield()->InternalType();
tt = type->Yield()->InternalType();
}
if ( bt == tt )
// Can drop the conversion.
return op;
return AssignToTemporary(c, red_stmt);