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Add Builtin.Word and use it to implement swift.Word.

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Swift SVN r9864
This commit is contained in:
Greg Parker
2013-11-01 00:11:22 +00:00
parent 40467f37dd
commit beaa56d8e9
4 changed files with 388 additions and 12 deletions
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20
lib/AST/Builtins.cpp
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@@ -46,6 +46,11 @@ bool IntrinsicInfo::hasAttribute(llvm::Attribute::AttrKind Kind) const {
return (attrs.hasAttribute(llvm::AttributeSet::FunctionIndex, Kind));
}
static Type getPointerSizeType(ASTContext &Context) {
// FIXME: Size of a pointer here?
return BuiltinIntegerType::get(64, Context);
}
Type swift::getBuiltinType(ASTContext &Context, StringRef Name) {
// Vectors are VecNxT, where "N" is the number of elements and
// T is the element type.
@@ -79,6 +84,9 @@ Type swift::getBuiltinType(ASTContext &Context, StringRef Name) {
if (Name == "FPIEEE64")
return Context.TheIEEE64Type;
if (Name == "Word")
return getPointerSizeType(Context);
// Handle 'int8' and friends.
if (Name.substr(0, 3) == "Int") {
unsigned BitWidth;
@@ -271,11 +279,14 @@ static ValueDecl *getCastOperation(ASTContext &Context, Identifier Id,
// the "isBuiltinTypeOverloaded" predicate successfully.
switch (VK) {
default: assert(0 && "Not a cast operation");
// Allow trunc/zext/sext of identical bit widths (i.e. a no-op)
// because it simplifies interfacing Word with Int32 and Int64.
case BuiltinValueKind::Trunc:
if (CheckOutput.isNull() ||
!CheckInput->is<BuiltinIntegerType>() ||
!CheckOutput->is<BuiltinIntegerType>() ||
CheckInput->castTo<BuiltinIntegerType>()->getBitWidth() <=
CheckInput->castTo<BuiltinIntegerType>()->getBitWidth() <
CheckOutput->castTo<BuiltinIntegerType>()->getBitWidth())
return nullptr;
break;
@@ -285,7 +296,7 @@ static ValueDecl *getCastOperation(ASTContext &Context, Identifier Id,
if (CheckOutput.isNull() ||
!CheckInput->is<BuiltinIntegerType>() ||
!CheckOutput->is<BuiltinIntegerType>() ||
CheckInput->castTo<BuiltinIntegerType>()->getBitWidth() >=
CheckInput->castTo<BuiltinIntegerType>()->getBitWidth() >
CheckOutput->castTo<BuiltinIntegerType>()->getBitWidth())
return nullptr;
break;
@@ -427,11 +438,6 @@ static ValueDecl *getDestroyOperation(ASTContext &Context, Identifier Id) {
ResultTy, ResultTy, ParamList);
}
static Type getPointerSizeType(ASTContext &Context) {
// FIXME: Size of a pointer here?
return BuiltinIntegerType::get(64, Context);
}
static ValueDecl *getSizeOrAlignOfOperation(ASTContext &Context,
Identifier Id) {
Type GenericTy;