Expression eval lookup speedup by not returning methods in ManualDWARFIndex::GetFunctions

Summary:
This change is connected with
https://reviews.llvm.org/D69843

In large codebases, we sometimes see Module::FindFunctions (when called from
ClangExpressionDeclMap::FindExternalVisibleDecls) returning huge amounts of
functions.

In current fix I trying to return only function_fullnames from ManualDWARFIndex::GetFunctions when eFunctionNameTypeFull is passed as argument.

Reviewers: labath, jarin, aprantl

Reviewed By: labath

Subscribers: shafik, clayborg, teemperor, arphaman, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D70846

4 files changed, 17 insertions, 16 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/lang/cpp/printf/TestPrintf.py b/lldb/packages/Python/lldbsuite/test/lang/cpp/printf/TestPrintf.py
index 3dfe4f29d18..10e400f4e72 100644
--- a/lldb/packages/Python/lldbsuite/test/lang/cpp/printf/TestPrintf.py
+++ b/lldb/packages/Python/lldbsuite/test/lang/cpp/printf/TestPrintf.py
@@ -1,7 +1,8 @@
-from lldbsuite.test import lldbinline
+from lldbsuite.test import lldbinline, lldbplatformutil
 from lldbsuite.test import decorators
 
 lldbinline.MakeInlineTest(
     __file__, globals(), [
         decorators.expectedFailureAll(
-            bugnumber="llvm.org/PR36715")])
+            bugnumber="llvm.org/PR36715",
+            oslist=lldbplatformutil.getDarwinOSTriples()+['windows'])])
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
index a302a73cafc..bf3023be5f6 100644
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
@@ -1254,9 +1254,9 @@ void ClangExpressionDeclMap::LookupFunction(NameSearchContext &context,
     // TODO Fix FindFunctions so that it doesn't return
     //   instance methods for eFunctionNameTypeBase.
 
-    target->GetImages().FindFunctions(name, eFunctionNameTypeFull,
-                                      include_symbols, include_inlines,
-                                      sc_list);
+    target->GetImages().FindFunctions(
+        name, eFunctionNameTypeFull | eFunctionNameTypeBase, include_symbols,
+        include_inlines, sc_list);
   }
 
   // If we found more than one function, see if we can use the frame's decl
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
index aff8b5d8c15..1e5927bd14f 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
@@ -401,8 +401,6 @@ void ManualDWARFIndex::GetFunctions(ConstString name, SymbolFileDWARF &dwarf,
 
   if (name_type_mask & eFunctionNameTypeFull) {
     DIEArray offsets;
-    m_set.function_basenames.Find(name, offsets);
-    m_set.function_methods.Find(name, offsets);
     m_set.function_fullnames.Find(name, offsets);
     for (const DIERef &die_ref: offsets) {
       DWARFDIE die = dwarf.GetDIE(die_ref);
diff --git a/lldb/test/Shell/SymbolFile/DWARF/find-basic-function.cpp b/lldb/test/Shell/SymbolFile/DWARF/find-basic-function.cpp
index 3d175f63e04..a05b0685a3d 100644
--- a/lldb/test/Shell/SymbolFile/DWARF/find-basic-function.cpp
+++ b/lldb/test/Shell/SymbolFile/DWARF/find-basic-function.cpp
@@ -21,7 +21,7 @@
 // RUN: lldb-test symbols --name=foo --find=function --function-flags=method %t | \
 // RUN:   FileCheck --check-prefix=METHOD %s
 // RUN: lldb-test symbols --name=foo --find=function --function-flags=full %t | \
-// RUN:   FileCheck --check-prefix=FULL %s
+// RUN:   FileCheck --check-prefix=FULL-APPLE %s
 // RUN: lldb-test symbols --name=_Z3fooi --find=function --function-flags=full %t | \
 // RUN:   FileCheck --check-prefix=FULL-MANGLED %s
 // RUN: lldb-test symbols --name=foo --context=context --find=function --function-flags=base %t | \
@@ -55,14 +55,16 @@
 // METHOD-DAG: name = "sbar::foo(int)", mangled = "_ZN4sbar3fooEi"
 // METHOD-DAG: name = "ffbar()::sbaz::foo()", mangled = "_ZZ5ffbarvEN4sbaz3fooEv"
 
-// FULL: Found 7 functions:
-// FULL-DAG: name = "foo()", mangled = "_Z3foov"
-// FULL-DAG: name = "foo(int)", mangled = "_Z3fooi"
-// FULL-DAG: name = "bar::foo()", mangled = "_ZN3bar3fooEv"
-// FULL-DAG: name = "bar::baz::foo()", mangled = "_ZN3bar3baz3fooEv"
-// FULL-DAG: name = "sbar::foo()", mangled = "_ZN4sbar3fooEv"
-// FULL-DAG: name = "sbar::foo(int)", mangled = "_ZN4sbar3fooEi"
-// FULL-DAG: name = "ffbar()::sbaz::foo()", mangled = "_ZZ5ffbarvEN4sbaz3fooEv"
+// FULL-APPLE: Found 7 functions:
+// FULL-APPLE-DAG: name = "foo()", mangled = "_Z3foov"
+// FULL-APPLE-DAG: name = "foo(int)", mangled = "_Z3fooi"
+// FULL-APPLE-DAG: name = "bar::foo()", mangled = "_ZN3bar3fooEv"
+// FULL-APPLE-DAG: name = "bar::baz::foo()", mangled = "_ZN3bar3baz3fooEv"
+// FULL-APPLE-DAG: name = "sbar::foo()", mangled = "_ZN4sbar3fooEv"
+// FULL-APPLE-DAG: name = "sbar::foo(int)", mangled = "_ZN4sbar3fooEi"
+// FULL-APPLE-DAG: name = "ffbar()::sbaz::foo()", mangled = "_ZZ5ffbarvEN4sbaz3fooEv"
+
+// FULL: Found 0 functions:
 
 // FULL-MANGLED: Found 1 functions:
 // FULL-MANGLED-DAG: name = "foo(int)", mangled = "_Z3fooi"