Prevent llvm.lifetime intrinsics from being emitted at -O0.

rdar://10921594

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151430 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index e2447340c11d4ef6c0d356a7a89a9deffe106e6f..d175bd5e083ca64a50770c28cb897c276f585661 100644 (file)
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -184,7 +184,11 @@ void EmitAssemblyHelper::CreatePasses() {
   }
   case CodeGenOptions::OnlyAlwaysInlining:
     // Respect always_inline.
-    PMBuilder.Inliner = createAlwaysInlinerPass();
+    if (OptLevel == 0)
+      // Do not insert lifetime intrinsics at -O0.
+      PMBuilder.Inliner = createAlwaysInlinerPass(false);
+    else
+      PMBuilder.Inliner = createAlwaysInlinerPass();
     break;
   }