Add code for emitting the attribute groups.
This is some initial code for emitting the attribute groups into the bitcode.
NOTE: This format *may* change! Do not rely upon the attribute groups' bitcode
not changing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174845 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index 74bbaf2..8d43099 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -185,6 +185,54 @@
return EncodedAttrs;
}
+static void WriteAttributeGroupTable(const ValueEnumerator &VE,
+ BitstreamWriter &Stream) {
+ const std::vector<AttributeSet> &Attrs = VE.getAttributeSets();
+ if (Attrs.empty()) return;
+
+ Stream.EnterSubblock(bitc::PARAMATTR_GROUP_BLOCK_ID, 3);
+
+ SmallVector<uint64_t, 64> Record;
+ for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
+ AttributeSet AS = Attrs[i];
+ for (unsigned i = 0, e = AS.getNumSlots(); i != e; ++i) {
+ AttributeSet A = AS.getSlotAttributes(i);
+
+ Record.push_back(VE.getAttributeSetID(A));
+ Record.push_back(AS.getSlotIndex(i));
+
+ for (AttributeSet::iterator I = AS.begin(0), E = AS.end(0);
+ I != E; ++I) {
+ Attribute Attr = *I;
+ if (Attr.isEnumAttribute()) {
+ Record.push_back(0);
+ Record.push_back(Attr.getKindAsEnum());
+ } else if (Attr.isAlignAttribute()) {
+ Record.push_back(1);
+ Record.push_back(Attr.getKindAsEnum());
+ Record.push_back(Attr.getValueAsInt());
+ } else {
+ StringRef Kind = Attr.getKindAsString();
+ StringRef Val = Attr.getValueAsString();
+
+ Record.push_back(Val.empty() ? 3 : 4);
+ Record.append(Kind.begin(), Kind.end());
+ Record.push_back(0);
+ if (!Val.empty()) {
+ Record.append(Val.begin(), Val.end());
+ Record.push_back(0);
+ }
+ }
+ }
+
+ Stream.EmitRecord(bitc::PARAMATTR_GRP_CODE_ENTRY, Record);
+ Record.clear();
+ }
+ }
+
+ Stream.ExitBlock();
+}
+
static void WriteAttributeTable(const ValueEnumerator &VE,
BitstreamWriter &Stream) {
const std::vector<AttributeSet> &Attrs = VE.getAttributes();
@@ -192,6 +240,8 @@
Stream.EnterSubblock(bitc::PARAMATTR_BLOCK_ID, 3);
+ // FIXME: Remove this! It no longer works with the current attributes classes.
+
SmallVector<uint64_t, 64> Record;
for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
const AttributeSet &A = Attrs[i];
@@ -1854,6 +1904,9 @@
// Emit blockinfo, which defines the standard abbreviations etc.
WriteBlockInfo(VE, Stream);
+ // Emit information about attribute groups.
+ WriteAttributeGroupTable(VE, Stream);
+
// Emit information about parameter attributes.
WriteAttributeTable(VE, Stream);