[turbofan] Remove the FloatXXSubPreserveNan operators.

test/unittests/compiler/x64/instruction-selector-x64-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "test/unittests/compiler/instruction-selector-unittest.h"
 
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 1116 matching lines @@
     m.Return(ret);
     Stream s = m.Build();
     ASSERT_EQ(4U, s.size());
     EXPECT_EQ(kSSEFloat64Add, s[0]->arch_opcode());
     EXPECT_EQ(kSSEFloat64Mul, s[1]->arch_opcode());
     EXPECT_EQ(kSSEFloat64Sub, s[2]->arch_opcode());
     EXPECT_EQ(kSSEFloat64Div, s[3]->arch_opcode());
   }
 }
 
-
-TEST_F(InstructionSelectorTest, Float32SubWithMinusZeroAndParameter) {
-  {
-    StreamBuilder m(this, MachineType::Float32(), MachineType::Float32());
-    Node* const p0 = m.Parameter(0);
-    Node* const n = m.Float32Sub(m.Float32Constant(-0.0f), p0);
-    m.Return(n);
-    Stream s = m.Build();
-    ASSERT_EQ(1U, s.size());
-    EXPECT_EQ(kSSEFloat32Neg, s[0]->arch_opcode());
-    ASSERT_EQ(1U, s[0]->InputCount());
-    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
-    ASSERT_EQ(1U, s[0]->OutputCount());
-    EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
-    EXPECT_EQ(kFlags_none, s[0]->flags_mode());
-  }
-  {
-    StreamBuilder m(this, MachineType::Float32(), MachineType::Float32());
-    Node* const p0 = m.Parameter(0);
-    Node* const n = m.Float32Sub(m.Float32Constant(-0.0f), p0);
-    m.Return(n);
-    Stream s = m.Build(AVX);
-    ASSERT_EQ(1U, s.size());
-    EXPECT_EQ(kAVXFloat32Neg, s[0]->arch_opcode());
-    ASSERT_EQ(1U, s[0]->InputCount());
-    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
-    ASSERT_EQ(1U, s[0]->OutputCount());
-    EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
-    EXPECT_EQ(kFlags_none, s[0]->flags_mode());
-  }
-}
-
-
-TEST_F(InstructionSelectorTest, Float64SubWithMinusZeroAndParameter) {
-  {
-    StreamBuilder m(this, MachineType::Float64(), MachineType::Float64());
-    Node* const p0 = m.Parameter(0);
-    Node* const n = m.Float64Sub(m.Float64Constant(-0.0), p0);
-    m.Return(n);
-    Stream s = m.Build();
-    ASSERT_EQ(1U, s.size());
-    EXPECT_EQ(kSSEFloat64Neg, s[0]->arch_opcode());
-    ASSERT_EQ(1U, s[0]->InputCount());
-    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
-    ASSERT_EQ(1U, s[0]->OutputCount());
-    EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
-    EXPECT_EQ(kFlags_none, s[0]->flags_mode());
-  }
-  {
-    StreamBuilder m(this, MachineType::Float64(), MachineType::Float64());
-    Node* const p0 = m.Parameter(0);
-    Node* const n = m.Float64Sub(m.Float64Constant(-0.0), p0);
-    m.Return(n);
-    Stream s = m.Build(AVX);
-    ASSERT_EQ(1U, s.size());
-    EXPECT_EQ(kAVXFloat64Neg, s[0]->arch_opcode());
-    ASSERT_EQ(1U, s[0]->InputCount());
-    EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
-    ASSERT_EQ(1U, s[0]->OutputCount());
-    EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
-    EXPECT_EQ(kFlags_none, s[0]->flags_mode());
-  }
-}
-
-
 // -----------------------------------------------------------------------------
 // Miscellaneous.
 
 
 TEST_F(InstructionSelectorTest, Uint64LessThanWithLoadAndLoadStackPointer) {
   StreamBuilder m(this, MachineType::Bool());
   Node* const sl = m.Load(
       MachineType::Pointer(),
       m.ExternalConstant(ExternalReference::address_of_stack_limit(isolate())));
   Node* const sp = m.LoadStackPointer();
@@ skipping 118 matching lines @@
   EXPECT_EQ(kX64Lzcnt32, s[0]->arch_opcode());
   ASSERT_EQ(1U, s[0]->InputCount());
   EXPECT_EQ(s.ToVreg(p0), s.ToVreg(s[0]->InputAt(0)));
   ASSERT_EQ(1U, s[0]->OutputCount());
   EXPECT_EQ(s.ToVreg(n), s.ToVreg(s[0]->Output()));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8