From c6944f795d846ae55f8375dd0f8f8ef2045d4cfb Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Thu, 9 Aug 2018 22:20:44 +0000
Subject: [InstSimplify] move minnum/maxnum with Inf folds from instcombine

llvm-svn: 339396
---
 .../Transforms/InstCombine/InstCombineCalls.cpp    | 35 ----------------------
 1 file changed, 35 deletions(-)

(limited to 'llvm/lib/Transforms')

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index dcd080e3305..310b87e931c 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -1133,37 +1133,6 @@ static Value *simplifyX86vpcom(const IntrinsicInst &II,
   return nullptr;
 }
 
-static Value *simplifyMinnumMaxnum(const IntrinsicInst &II) {
-  Value *Arg0 = II.getArgOperand(0);
-  Value *Arg1 = II.getArgOperand(1);
-
-  const auto *C1 = dyn_cast<ConstantFP>(Arg1);
-
-  // fmin(x, nan) -> x
-  if (C1 && C1->isNaN())
-    return Arg0;
-
-  if (II.getIntrinsicID() == Intrinsic::minnum) {
-    // TODO: fmin(nnan x, inf) -> x
-    // TODO: fmin(nnan ninf x, flt_max) -> x
-    if (C1 && C1->isInfinity()) {
-      // fmin(x, -inf) -> -inf
-      if (C1->isNegative())
-        return Arg1;
-    }
-  } else {
-    assert(II.getIntrinsicID() == Intrinsic::maxnum);
-    // TODO: fmax(nnan x, -inf) -> x
-    // TODO: fmax(nnan ninf x, -flt_max) -> x
-    if (C1 && C1->isInfinity()) {
-      // fmax(x, inf) -> inf
-      if (!C1->isNegative())
-        return Arg1;
-    }
-  }
-  return nullptr;
-}
-
 static bool maskIsAllOneOrUndef(Value *Mask) {
   auto *ConstMask = dyn_cast<Constant>(Mask);
   if (!ConstMask)
@@ -2000,10 +1969,6 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
       return II;
     }
 
-    // FIXME: Simplifications should be in instsimplify.
-    if (Value *V = simplifyMinnumMaxnum(*II))
-      return replaceInstUsesWith(*II, V);
-
     Value *X, *Y;
     if (match(Arg0, m_FNeg(m_Value(X))) && match(Arg1, m_FNeg(m_Value(Y))) &&
         (Arg0->hasOneUse() || Arg1->hasOneUse())) {
-- 
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