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Introduce DIFile. This will be used to represent header files and source file(s) in debug info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97994 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-03-08 22:27:22 +00:00
parent b98b1bf432
commit 7aa8189706
2 changed files with 39 additions and 0 deletions
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16
include/llvm/Analysis/DebugInfo.h
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@ -87,6 +87,7 @@ namespace llvm {
bool isSubprogram() const;
bool isGlobalVariable() const;
bool isScope() const;
bool isFile() const;
bool isCompileUnit() const;
bool isNameSpace() const;
bool isLexicalBlock() const;
@ -158,6 +159,18 @@ namespace llvm {
void dump() const;
};
/// DIFile - This is a wrapper for a file.
class DIFile : public DIScope {
public:
explicit DIFile(MDNode *N = 0) : DIScope(N) {
if (DbgNode && !isFile())
DbgNode = 0;
}
StringRef getFilename() const { return getStringField(1); }
StringRef getDirectory() const { return getStringField(2); }
DICompileUnit getCompileUnit() const{ return getFieldAs<DICompileUnit>(3); }
};
/// DIEnumerator - A wrapper for an enumerator (e.g. X and Y in 'enum {X,Y}').
/// FIXME: it seems strange that this doesn't have either a reference to the
/// type/precision or a file/line pair for location info.
@ -502,6 +515,9 @@ namespace llvm {
StringRef Flags = "",
unsigned RunTimeVer = 0);
/// CreateFile - Create a new descriptor for the specified file.
DIFile CreateFile(StringRef Filename, StringRef Directory, DICompileUnit CU);
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator CreateEnumerator(StringRef Name, uint64_t Val);

23
lib/Analysis/DebugInfo.cpp
View File

@ -219,6 +219,11 @@ bool DIDescriptor::isCompileUnit() const {
return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
}
/// isFile - Return true if the specified tag is DW_TAG_file_type.
bool DIDescriptor::isFile() const {
return DbgNode && getTag() == dwarf::DW_TAG_file_type;
}
/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
bool DIDescriptor::isNameSpace() const {
return DbgNode && getTag() == dwarf::DW_TAG_namespace;
@ -424,6 +429,8 @@ StringRef DIScope::getFilename() const {
return DINameSpace(DbgNode).getFilename();
if (isType())
return DIType(DbgNode).getFilename();
if (isFile())
return DIFile(DbgNode).getFilename();
assert(0 && "Invalid DIScope!");
return StringRef();
}
@ -441,6 +448,8 @@ StringRef DIScope::getDirectory() const {
return DINameSpace(DbgNode).getDirectory();
if (isType())
return DIType(DbgNode).getDirectory();
if (isFile())
return DIFile(DbgNode).getDirectory();
assert(0 && "Invalid DIScope!");
return StringRef();
}
@ -661,6 +670,20 @@ DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
return DICompileUnit(MDNode::get(VMContext, &Elts[0], 10));
}
/// CreateFile - Create a new descriptor for the specified file.
DIFile DIFactory::CreateFile(StringRef Filename,
StringRef Directory,
DICompileUnit CU) {
Value *Elts[] = {
GetTagConstant(dwarf::DW_TAG_file_type),
MDString::get(VMContext, Filename),
MDString::get(VMContext, Directory),
CU.getNode()
};
return DIFile(MDNode::get(VMContext, &Elts[0], 4));
}
/// CreateEnumerator - Create a single enumerator value.
DIEnumerator DIFactory::CreateEnumerator(StringRef Name, uint64_t Val){
Value *Elts[] = {