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Fix remaining bugs with complex/float promotions. 

llvm-svn: 41515
This commit is contained in:
Steve Naroff 2007-08-27 21:32:55 +00:00
parent 9e248870e5
commit e31313d792
1 changed files with 25 additions and 16 deletions
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39
clang/Sema/SemaExpr.cpp
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@ -824,23 +824,32 @@ QualType Sema::UsualArithmeticConversions(Expr *&lhsExpr, Expr *&rhsExpr,
int result = Context.compareFloatingType(lhs, rhs);
if (result > 0) { // The left side is bigger, convert rhs.
QualType tMax = Context.getFloatingTypeOfSizeWithinDomain(lhs, rhs);
if (!isCompAssign) promoteExprToType(rhsExpr, tMax);
return tMax;
rhs = Context.getFloatingTypeOfSizeWithinDomain(lhs, rhs);
if (!isCompAssign)
promoteExprToType(rhsExpr, rhs);
} else if (result < 0) { // The right side is bigger, convert lhs.
lhs = Context.getFloatingTypeOfSizeWithinDomain(rhs, lhs);
if (!isCompAssign)
promoteExprToType(lhsExpr, lhs);
}
if (result < 0) { // The right side is bigger, convert lhs.
QualType tMax = Context.getFloatingTypeOfSizeWithinDomain(rhs, lhs);
if (!isCompAssign) promoteExprToType(lhsExpr, tMax);
return tMax;
}
// The floating point types were ranked equally.
if (lhs->isComplexType()) { // handle "_Complex double, double".
if (!isCompAssign) promoteExprToType(rhsExpr, lhs);
return lhs;
}
// The right side is complex, handle "double, _Complex double".
if (!isCompAssign) promoteExprToType(lhsExpr, rhs);
// At this point, lhs and rhs have the same rank/size. Now, make sure the
// domains match. This is a requirement for our implementation, C99
// does not require this promotion.
if (lhs != rhs) { // Domains don't match, we have complex/float mix.
if (lhs->isRealFloatingType()) { // handle "double, _Complex double".
if (isCompAssign)
return rhs;
promoteExprToType(lhsExpr, rhs);
} else { // handle "_Complex double, double".
if (isCompAssign)
return lhs;
promoteExprToType(rhsExpr, lhs);
}
// Both expressions now have the same rank/domain.
return lhsExpr->getType();
}
// The domain/size match, simply return lhs (which may have been converted).
return lhs;
}
// Now handle "real" floating types (i.e. float, double, long double).
if (lhs->isRealFloatingType() || rhs->isRealFloatingType()) {