From: Bill Wendling <isanbard@gmail.com>
Date: Mon, 15 Aug 2011 18:23:40 +0000 (+0000)
Subject: Don't try to sink the landingpad instruction. It's immobile.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=06f20ebfcf2b4dbe388f6d506b62fb2aa8af5fe8;p=oota-llvm.git

Don't try to sink the landingpad instruction. It's immobile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137629 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/InstCombine/InstructionCombining.cpp b/lib/Transforms/InstCombine/InstructionCombining.cpp
index 41d542af685..32c55a3408d 100644
--- a/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -1417,8 +1417,9 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
 static bool TryToSinkInstruction(Instruction *I, BasicBlock *DestBlock) {
   assert(I->hasOneUse() && "Invariants didn't hold!");
 
-  // Cannot move control-flow-involving, volatile loads, vaarg, etc.
-  if (isa<PHINode>(I) || I->mayHaveSideEffects() || isa<TerminatorInst>(I))
+  // Cannot move control-flow-involving, volatile loads, vaarg, landingpad, etc.
+  if (isa<PHINode>(I) || isa<LandingPadInst>(I) || I->mayHaveSideEffects() ||
+      isa<TerminatorInst>(I))
     return false;
 
   // Do not sink alloca instructions out of the entry block.