From 9b5d6b860c7264e1dd8c5b757dfb4458dccdc27e Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@apple.com>
Date: Fri, 17 Feb 2012 23:03:39 +0000
Subject: [PATCH] Ignore the lifetime intrinsics in fast-isel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150848 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/FastISel.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 2700309e6f0..f20a714d2b8 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -567,6 +567,10 @@ bool FastISel::SelectCall(const User *I) {
   // Handle selected intrinsic function calls.
   switch (F->getIntrinsicID()) {
   default: break;
+    // At -O0 we don't care about the lifetime intrinsics.
+  case Intrinsic::lifetime_start:
+  case Intrinsic::lifetime_end:
+    return true;
   case Intrinsic::dbg_declare: {
     const DbgDeclareInst *DI = cast<DbgDeclareInst>(Call);
     if (!DIVariable(DI->getVariable()).Verify() ||