IR: Add helper to split debug info flags bitfield
Split debug info 'flags' bitfield over a vector so the current flags can
be iterated over. This API (in combination with r230107) will be used
for assembly support for symbolic constants.
llvm-svn: 230108
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index ad75fba..6590661 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -55,6 +55,30 @@
}
}
+unsigned DIDescriptor::splitFlags(unsigned Flags,
+ SmallVectorImpl<unsigned> &SplitFlags) {
+ // Accessibility flags need to be specially handled, since they're packed
+ // together.
+ if (unsigned A = Flags & FlagAccessibility) {
+ if (A == FlagPrivate)
+ SplitFlags.push_back(FlagPrivate);
+ else if (A == FlagProtected)
+ SplitFlags.push_back(FlagProtected);
+ else
+ SplitFlags.push_back(FlagPublic);
+ Flags &= ~A;
+ }
+
+#define HANDLE_DI_FLAG(ID, NAME) \
+ if (unsigned Bit = Flags & ID) { \
+ SplitFlags.push_back(Bit); \
+ Flags &= ~Bit; \
+ }
+#include "llvm/IR/DebugInfoFlags.def"
+
+ return Flags;
+}
+
bool DIDescriptor::Verify() const {
return DbgNode &&
(DIDerivedType(DbgNode).Verify() ||