<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Apr 6, 2015 at 12:48 PM, Duncan P. N. Exon Smith <span dir="ltr"><<a href="mailto:dexonsmith@apple.com" target="_blank">dexonsmith@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: dexonsmith<br>
Date: Mon Apr 6 14:48:50 2015<br>
New Revision: 234200<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=234200&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=234200&view=rev</a><br>
Log:<br>
DebugInfo: Add MDTypeRefArray, to replace DITypeArray<br>
<br>
This array-like wrapper adapts `MDTuple` to have elements of `MDTypeRef`<br>
(whereas `MDTypeArray` has elements of `MDType`). This is necessary to<br>
migrate code using `DITypeArray`. The only use of this is<br>
`MDSubroutineType`'s `getTypeArray()` accessor.<br>
<br>
Modified:<br>
llvm/trunk/include/llvm/IR/DebugInfoMetadata.h<br>
<br>
Modified: llvm/trunk/include/llvm/IR/DebugInfoMetadata.h<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DebugInfoMetadata.h?rev=234200&r1=234199&r2=234200&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DebugInfoMetadata.h?rev=234200&r1=234199&r2=234200&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/include/llvm/IR/DebugInfoMetadata.h (original)<br>
+++ llvm/trunk/include/llvm/IR/DebugInfoMetadata.h Mon Apr 6 14:48:50 2015<br>
@@ -89,6 +89,42 @@ typedef TypedDebugNodeRef<DebugNode> Deb<br>
typedef TypedDebugNodeRef<MDScope> MDScopeRef;<br>
typedef TypedDebugNodeRef<MDType> MDTypeRef;<br>
<br>
+class MDTypeRefArray {<br>
+ const MDTuple *N = nullptr;<br>
+<br>
+public:<br>
+ MDTypeRefArray(const MDTuple *N) : N(N) {}<br>
+ operator MDTuple *() const { return const_cast<MDTuple *>(N); }<br>
+ MDTuple *operator->() const { return const_cast<MDTuple *>(N); }<br>
+ MDTuple &operator*() const { return *const_cast<MDTuple *>(N); }<br>
+<br>
+ unsigned size() const { return N->getNumOperands(); }<br>
+ MDTypeRef operator[](unsigned I) const { return MDTypeRef(N->getOperand(I)); }<br>
+<br>
+ class iterator : std::iterator<std::input_iterator_tag, MDTypeRef,<br>
+ std::ptrdiff_t, void, MDTypeRef> {<br>
+ MDNode::op_iterator I;<br>
+<br>
+ public:<br>
+ explicit iterator(MDNode::op_iterator I) : I(I) {}<br>
+ MDTypeRef operator*() const { return MDTypeRef(*I); }<br>
+ iterator &operator++() {<br>
+ ++I;<br>
+ return *this;<br>
+ }<br>
+ iterator operator++(int) {<br>
+ iterator Temp(*this);<br>
+ ++I;<br>
+ return Temp;<br>
+ }<br>
+ bool operator==(const iterator &X) const { return I == X.I; }<br>
+ bool operator!=(const iterator &X) const { return I != X.I; }<br></blockquote><div><br>FWIW, ideally op overloads that can be non-members should be (to allow the same conversions on the LHS and RHS) - these could be inline friend definitions (or one a friend, and one not - since it can be defined in terms of the other). Not a big deal & we violate this all over the place, and it's not immediately apparent that any conversions should be possible on either side - just good habits.<br> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
+ };<br>
+<br>
+ iterator begin() const { return iterator(N->op_begin()); }<br>
+ iterator end() const { return iterator(N->op_end()); }<br>
+};<br>
+<br>
/// \brief Tagged DWARF-like metadata node.<br>
///<br>
/// A metadata node with a DWARF tag (i.e., a constant named \c DW_TAG_*,<br>
@@ -826,7 +862,7 @@ public:<br>
<br>
TempMDSubroutineType clone() const { return cloneImpl(); }<br>
<br>
- MDTuple *getTypeArray() const { return getElements(); }<br>
+ MDTypeRefArray getTypeArray() const { return getElements(); }<br>
Metadata *getRawTypeArray() const { return getRawElements(); }<br>
<br>
static bool classof(const Metadata *MD) {<br>
<br>
<br>
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</blockquote></div><br></div></div>