r333677 - IRGen: Write .dwo files when -split-dwarf-file is used together with -fthinlto-index.

[Peter Collingbourne via cfe-commits]

Author: pcc
Date: Thu May 31 11:25:59 2018
New Revision: 333677

URL: http://llvm.org/viewvc/llvm-project?rev=333677&view=rev
Log:
IRGen: Write .dwo files when -split-dwarf-file is used together with -fthinlto-index.

Differential Revision: https://reviews.llvm.org/D47597

Added:
    cfe/trunk/test/CodeGen/thinlto-split-dwarf.c
Modified:
    cfe/trunk/lib/CodeGen/BackendUtil.cpp

Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=333677&r1=333676&r2=333677&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original)
+++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Thu May 31 11:25:59 2018
@@ -1161,6 +1161,7 @@ static void runThinLTOBackend(ModuleSumm
   Conf.DebugPassManager = CGOpts.DebugPassManager;
   Conf.RemarksWithHotness = CGOpts.DiagnosticsWithHotness;
   Conf.RemarksFilename = CGOpts.OptRecordFile;
+  Conf.DwoPath = CGOpts.SplitDwarfFile;
   switch (Action) {
   case Backend_EmitNothing:
     Conf.PreCodeGenModuleHook = [](size_t Task, const Module &Mod) {

Added: cfe/trunk/test/CodeGen/thinlto-split-dwarf.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/thinlto-split-dwarf.c?rev=333677&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/thinlto-split-dwarf.c (added)
+++ cfe/trunk/test/CodeGen/thinlto-split-dwarf.c Thu May 31 11:25:59 2018
@@ -0,0 +1,21 @@
+// REQUIRES: x86-registered-target
+
+// RUN: %clang_cc1 -debug-info-kind=limited -triple x86_64-unknown-linux-gnu \
+// RUN:   -flto=thin -emit-llvm-bc \
+// RUN:   -o %t.o %s
+
+// RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
+// RUN:   -o %t2.index \
+// RUN:   -r=%t.o,main,px
+
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu \
+// RUN:   -emit-obj -fthinlto-index=%t.o.thinlto.bc \
+// RUN:   -o %t.native.o -split-dwarf-file %t.native.dwo -x ir %t.o
+
+// RUN: llvm-readobj -sections %t.native.o | FileCheck --check-prefix=O %s
+// RUN: llvm-readobj -sections %t.native.dwo | FileCheck --check-prefix=DWO %s
+
+// O-NOT: .dwo
+// DWO: .dwo
+
+int main() {}