Debug Info: Set the DICompileUnit's isOptimized flag when compiling with LTO.

rdar://problem/27640939

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@310147 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index c9aa04815f19635ded3a35a4a3c496dbc59a67b9..e5955c0b8bac904be8cb870aa97e9eeee5d67593 100644 (file)
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -527,16 +527,15 @@ void CGDebugInfo::CreateCompileUnit() {
 
   // Create new compile unit.
   // FIXME - Eliminate TheCU.
+  auto &CGOpts = CGM.getCodeGenOpts();
   TheCU = DBuilder.createCompileUnit(
       LangTag,
       DBuilder.createFile(remapDIPath(MainFileName),
                           remapDIPath(getCurrentDirname()), CSKind, Checksum),
-      Producer, LO.Optimize, CGM.getCodeGenOpts().DwarfDebugFlags, RuntimeVers,
-      CGM.getCodeGenOpts().EnableSplitDwarf
-          ? ""
-          : CGM.getCodeGenOpts().SplitDwarfFile,
-      EmissionKind, 0 /* DWOid */, CGM.getCodeGenOpts().SplitDwarfInlining,
-      CGM.getCodeGenOpts().DebugInfoForProfiling);
+      Producer, LO.Optimize || CGOpts.PrepareForLTO || CGOpts.EmitSummaryIndex,
+      CGOpts.DwarfDebugFlags, RuntimeVers,
+      CGOpts.EnableSplitDwarf ? "" : CGOpts.SplitDwarfFile, EmissionKind,
+      0 /* DWOid */, CGOpts.SplitDwarfInlining, CGOpts.DebugInfoForProfiling);
 }
 
 llvm::DIType *CGDebugInfo::CreateType(const BuiltinType *BT) {

diff --git a/test/CodeGen/debug-info-lto.c b/test/CodeGen/debug-info-lto.c
new file mode 100644 (file)
index 0000000..5dab0a1
--- /dev/null
+++ b/test/CodeGen/debug-info-lto.c
@@ -0,0 +1,4 @@
+// RUN: %clang_cc1 -flto -emit-llvm -debug-info-kind=standalone %s -o - | FileCheck %s
+// RUN: %clang_cc1 -flto=thin -emit-llvm -debug-info-kind=standalone %s -o - | FileCheck %s
+// The "o" in LTO stands for optimization!
+// CHECK: !DICompileUnit({{.*}} isOptimized: true