Add a new wrapper node for a DILexicalBlock that encapsulates it and a
file. Since it should only be used when necessary propagate it through
the backend code generation and tweak testcases accordingly.
This helps with code like in clang's test/CodeGen/debug-info-line.c where
we have multiple #line directives within a single lexical block and want
to generate only a single block that contains each file change.
Part of rdar://10246360
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141729 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp
index fd56d36..bfa429d 100644
--- a/lib/Analysis/DIBuilder.cpp
+++ b/lib/Analysis/DIBuilder.cpp
@@ -851,6 +851,18 @@
return DINameSpace(MDNode::get(VMContext, Elts));
}
+/// createLexicalBlockFile - This creates a new MDNode that encapsulates
+/// an existing scope with a new filename.
+DILexicalBlockFile DIBuilder::createLexicalBlockFile(DIDescriptor Scope,
+ DIFile File) {
+ Value *Elts[] = {
+ GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
+ Scope,
+ File
+ };
+ return DILexicalBlockFile(MDNode::get(VMContext, Elts));
+}
+
DILexicalBlock DIBuilder::createLexicalBlock(DIDescriptor Scope, DIFile File,
unsigned Line, unsigned Col) {
// Defeat MDNode uniqing for lexical blocks by using unique id.