From 6f44a590dad07c47cdc2fc19861574af1da36963 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Fri, 25 Dec 2015 21:39:45 +0000
Subject: Upgrade our copies of clang and llvm to 3.7.1 release.  This is a
 bugfix-only release, with no new features.

Please note that from 3.5.0 onwards, clang and llvm require C++11
support to build; see UPDATING for more information.
---
 contrib/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp | 2 +-
 contrib/llvm/lib/Transforms/Scalar/GVN.cpp             | 3 ++-
 contrib/llvm/lib/Transforms/Utils/Local.cpp            | 5 +++++
 3 files changed, 8 insertions(+), 2 deletions(-)

(limited to 'contrib/llvm/lib/Transforms')

diff --git a/contrib/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/contrib/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
index 88e5e47..909baae 100644
--- a/contrib/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/contrib/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -228,7 +228,7 @@ void PassManagerBuilder::populateModulePassManager(
   // Start of function pass.
   // Break up aggregate allocas, using SSAUpdater.
   if (UseNewSROA)
-    MPM.add(createSROAPass(/*RequiresDomTree*/ false));
+    MPM.add(createSROAPass());
   else
     MPM.add(createScalarReplAggregatesPass(-1, false));
   MPM.add(createEarlyCSEPass());              // Catch trivial redundancies
diff --git a/contrib/llvm/lib/Transforms/Scalar/GVN.cpp b/contrib/llvm/lib/Transforms/Scalar/GVN.cpp
index d1eba6e..89a0d0a 100644
--- a/contrib/llvm/lib/Transforms/Scalar/GVN.cpp
+++ b/contrib/llvm/lib/Transforms/Scalar/GVN.cpp
@@ -1761,7 +1761,8 @@ bool GVN::processNonLocalLoad(LoadInst *LI) {
     if (isa<PHINode>(V))
       V->takeName(LI);
     if (Instruction *I = dyn_cast<Instruction>(V))
-      I->setDebugLoc(LI->getDebugLoc());
+      if (LI->getDebugLoc())
+        I->setDebugLoc(LI->getDebugLoc());
     if (V->getType()->getScalarType()->isPointerTy())
       MD->invalidateCachedPointerInfo(V);
     markInstructionForDeletion(LI);
diff --git a/contrib/llvm/lib/Transforms/Utils/Local.cpp b/contrib/llvm/lib/Transforms/Utils/Local.cpp
index 50ca623..ba8af47 100644
--- a/contrib/llvm/lib/Transforms/Utils/Local.cpp
+++ b/contrib/llvm/lib/Transforms/Utils/Local.cpp
@@ -869,6 +869,11 @@ bool llvm::EliminateDuplicatePHINodes(BasicBlock *BB) {
       PN->replaceAllUsesWith(*Inserted.first);
       PN->eraseFromParent();
       Changed = true;
+
+      // The RAUW can change PHIs that we already visited. Start over from the
+      // beginning.
+      PHISet.clear();
+      I = BB->begin();
     }
   }
 
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