From c45ef6d395eb800c62aee61b666cd4fd890dd603 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 15 Jun 2004 21:37:54 +0000
Subject: [PATCH] Remove support for the isnan intrinsic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14186 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Utils/Local.cpp | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index e9ec6db069c..694c31e1f96 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -245,7 +245,6 @@ bool llvm::canConstantFoldCallTo(Function *F) {
   const std::string &Name = F->getName();
 
   switch (F->getIntrinsicID()) {
-  case Intrinsic::isnan: return true;
   case Intrinsic::isunordered: return true;
   default: break;
   }
@@ -274,8 +273,6 @@ Constant *llvm::ConstantFoldCall(Function *F,
   if (Operands.size() == 1) {
     if (ConstantFP *Op = dyn_cast<ConstantFP>(Operands[0])) {
       double V = Op->getValue();
-      if (Name == "llvm.isnan")
-        return ConstantBool::get(isnan(V));
       else if (Name == "sin")
         return ConstantFP::get(Ty, sin(V));
       else if (Name == "cos")
-- 
2.34.1