[llvm-symbolizer] Print file/line for a PC even if there is no DIE describing it.

This is important for symbolizing executables with debug info in
unavailable .dwo files. Even if all DIE entries are missing, we can
still symbolize an address: function name can be fetched from symbol table,
and file/line info can be fetched from line table.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206665 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 22 insertions, 0 deletions

diff --git a/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test b/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test
new file mode 100755
index 0000000000..c28c3d277a
--- /dev/null
+++ b/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test
diff --git a/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test.cc b/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test.cc
new file mode 100644
index 0000000000..ea0967a263
--- /dev/null
+++ b/test/DebugInfo/Inputs/llvm-symbolizer-dwo-test.cc
@@ -0,0 +1,18 @@
+int f(int a, int b) {
+  return a + b;
+}
+
+int g(int a) {
+  return a + 1;
+}
+
+
+int main() {
+  return f(2, g(2));
+}
+
+// Built with Clang 3.5.0:
+// $ mkdir -p /tmp/dbginfo
+// $ cp llvm-symbolizer-dwo-test.cc /tmp/dbginfo
+// $ cd /tmp/dbginfo
+// $ clang -gsplit-dwarf llvm-symbolizer-dwo-test.cc
diff --git a/test/DebugInfo/llvm-symbolizer.test b/test/DebugInfo/llvm-symbolizer.test
index 4b532f3e4a..6d51fe96c4 100644
--- a/test/DebugInfo/llvm-symbolizer.test
+++ b/test/DebugInfo/llvm-symbolizer.test
@@ -8,6 +8,7 @@ RUN: echo "\"%p/Inputs/dwarfdump-test3.elf-x86-64 space\" 0x633" >> %t.input
 RUN: echo "%p/Inputs/macho-universal 0x1f84" >> %t.input
 RUN: echo "%p/Inputs/macho-universal:i386 0x1f67" >> %t.input
 RUN: echo "%p/Inputs/macho-universal:x86_64 0x100000f05" >> %t.input
+RUN: echo "%p/Inputs/llvm-symbolizer-dwo-test 0x400514" >> %t.input
 
 RUN: llvm-symbolizer --functions --inlining --demangle=false \
 RUN:    --default-arch=i386 < %t.input | FileCheck %s
@@ -48,6 +49,9 @@ CHECK:      main
 CHECK:      _Z3inci
 CHECK:      _Z3inci
 
+CHECK: main
+CHECK-NEXT: llvm-symbolizer-dwo-test.cc:11
+
 RUN: echo "unexisting-file 0x1234" > %t.input2
 RUN: llvm-symbolizer < %t.input2