Add support for disabling llvm.lifetime intrinsics in the AlwaysInliner. These

are optimization hints, but at -O0 we're not optimizing.  This becomes a problem
when the alwaysinline attribute is abused.
rdar://10921594



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151429 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 1 deletions

diff --git a/lib/Transforms/IPO/InlineAlways.cpp b/lib/Transforms/IPO/InlineAlways.cpp
index b9b78a1b55..b1fe24dcdb 100644
--- a/lib/Transforms/IPO/InlineAlways.cpp
+++ b/lib/Transforms/IPO/InlineAlways.cpp
@@ -37,7 +37,11 @@ namespace {
     InlineCostAnalyzer CA;
   public:
     // Use extremely low threshold.
-    AlwaysInliner() : Inliner(ID, -2000000000) {
+    AlwaysInliner() : Inliner(ID, -2000000000, true) {
+      initializeAlwaysInlinerPass(*PassRegistry::getPassRegistry());
+    }
+    AlwaysInliner(bool InsertLifetime) : Inliner(ID, -2000000000,
+                                                 InsertLifetime) {
       initializeAlwaysInlinerPass(*PassRegistry::getPassRegistry());
     }
     static char ID; // Pass identification, replacement for typeid
@@ -72,6 +76,10 @@ INITIALIZE_PASS_END(AlwaysInliner, "always-inline",
 
 Pass *llvm::createAlwaysInlinerPass() { return new AlwaysInliner(); }
 
+Pass *llvm::createAlwaysInlinerPass(bool InsertLifetime) {
+  return new AlwaysInliner(InsertLifetime);
+}
+
 // doInitialization - Initializes the vector of functions that have not
 // been annotated with the "always inline" attribute.
 bool AlwaysInliner::doInitialization(CallGraph &CG) {