From b014678eb3ef1704d85b25ca2b879fe41b303140 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 2 Aug 2007 16:56:32 +0000
Subject: [PATCH] Disable an xform that causes an infinite loop.  This fixes
 PR1594

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40739 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/InstructionCombining.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 84ae26427b7..806c6e4da9b 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -6385,6 +6385,7 @@ static bool CanEvaluateInDifferentType(Value *V, const IntegerType *Ty,
   case Instruction::Trunc:
     // If this is the same kind of case as our original (e.g. zext+zext), we
     // can safely eliminate it.
+    break;  // FIXME: This causes PR1594
     if (I->getOpcode() == CastOpc) {
       ++NumCastsRemoved;
       return true;
-- 
2.34.1