--- /dev/null
+// REQUIRES: shell
+//
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: cd %t
+//
+// ---------------------------------------------------------------------
+// Relative PCH, same directory.
+// ---------------------------------------------------------------------
+//
+// RUN: %clang_cc1 -fmodule-format=obj -emit-pch \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -o prefix.pch %S/debug-info-limited-struct.h
+//
+// RUN: %clang_cc1 -debug-info-kind=standalone \
+// RUN: -dwarf-ext-refs -fmodule-format=obj \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -include-pch prefix.pch %s -emit-llvm -o %t.nodir.ll %s
+// RUN: cat %t.nodir.ll | FileCheck %s --check-prefix=CHECK-REL-NODIR
+//
+//
+// CHECK-REL-NODIR: !DICompileUnit
+// CHECK-REL-NODIR-SAME: file: ![[C:[0-9]+]]
+// CHECK-REL-NODIR-NOT: dwoId
+// CHECK-REL-NODIR: ![[C]] = !DIFile({{.*}}directory: "[[DIR:.*]]"
+// CHECK-REL-NODIR: !DICompileUnit(
+// CHECK-REL-NODIR-SAME: file: ![[PCH:[0-9]+]]
+// CHECK-REL-NODIR-SAME: splitDebugFilename: "prefix.pch"
+// CHECK-REL-NODIR: ![[PCH]] = !DIFile({{.*}}directory: "[[DIR]]"
+
+// ---------------------------------------------------------------------
+// Relative PCH in a subdirectory.
+// ---------------------------------------------------------------------
+//
+// RUN: mkdir pchdir
+// RUN: %clang_cc1 -fmodule-format=obj -emit-pch \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -o pchdir/prefix.pch %S/debug-info-limited-struct.h
+//
+// RUN: %clang_cc1 -debug-info-kind=standalone \
+// RUN: -dwarf-ext-refs -fmodule-format=obj \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -include-pch pchdir/prefix.pch %s -emit-llvm -o %t.rel.ll %s
+// RUN: cat %t.rel.ll | FileCheck %s --check-prefix=CHECK-REL
+
+// CHECK-REL: !DICompileUnit
+// CHECK-REL-SAME: file: ![[C:[0-9]+]]
+// CHECK-REL-NOT: dwoId
+// CHECK-REL: ![[C]] = !DIFile({{.*}}directory: "[[DIR:.*]]"
+// CHECK-REL: !DICompileUnit(
+// CHECK-REL-SAME: file: ![[PCH:[0-9]+]]
+// CHECK-REL-SAME: splitDebugFilename: "prefix.pch"
+// CHECK-REL: ![[PCH]] = !DIFile({{.*}}directory: "[[DIR]]{{.*}}pchdir"
+
+// ---------------------------------------------------------------------
+// Absolute PCH.
+// ---------------------------------------------------------------------
+//
+// RUN: %clang_cc1 -fmodule-format=obj -emit-pch \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -o %t/prefix.pch %S/debug-info-limited-struct.h
+//
+// RUN: %clang_cc1 -debug-info-kind=standalone \
+// RUN: -dwarf-ext-refs -fmodule-format=obj \
+// RUN: -triple %itanium_abi_triple \
+// RUN: -include-pch %t/prefix.pch %s -emit-llvm -o %t.abs.ll %s
+// RUN: cat %t.abs.ll | FileCheck %s --check-prefix=CHECK-ABS
+
+// CHECK-ABS: !DICompileUnit
+// CHECK-ABS-SAME: file: ![[C:[0-9]+]]
+// CHECK-ABS-NOT: dwoId
+// CHECK-ABS: ![[C]] = !DIFile({{.*}}directory: "[[DIR:.*]]"
+// CHECK-ABS: !DICompileUnit(
+// CHECK-ABS-SAME: file: ![[PCH:[0-9]+]]
+// CHECK-ABS-SAME: splitDebugFilename: "prefix.pch"
+// CHECK-ABS: ![[PCH]] = !DIFile({{.*}}directory: "[[DIR]]"