From 1e9f3af561932b324c45c05ff9a8728143e90753 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 20 Oct 2005 04:47:10 +0000
Subject: [PATCH] Do NOT touch FP ops with LSR.  This fixes a testcase Nate
 sent me from an inner loop like this:

LBB_RateConvertMono8AltiVec_2:  ; no_exit
        lis r2, ha16(.CPI_RateConvertMono8AltiVec_0)
        lfs f3, lo16(.CPI_RateConvertMono8AltiVec_0)(r2)
        fmr f3, f3
        fadd f0, f2, f0
        fadd f3, f0, f3
        fcmpu cr0, f3, f1
        bge cr0, LBB_RateConvertMono8AltiVec_2  ; no_exit

to an inner loop like this:

LBB_RateConvertMono8AltiVec_1:  ; no_exit
        fsub f2, f2, f1
        fcmpu cr0, f2, f1
        fmr f0, f2
        bge cr0, LBB_RateConvertMono8AltiVec_1  ; no_exit

Doh! good catch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23838 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopStrengthReduce.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index a74b91b4f76..183362dc0e6 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -372,7 +372,7 @@ static bool IVUseShouldUsePostIncValue(Instruction *User, Instruction *IV,
 /// return true.  Otherwise, return false.
 bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
                                             std::set<Instruction*> &Processed) {
-  if (I->getType() == Type::VoidTy) return false;
+  if (!I->getType()->isInteger()) return false;
   if (!Processed.insert(I).second)
     return true;    // Instruction already handled.