[arm64] Implement Float(32|64)(Min|Max) using fcsel.

src/compiler/arm/code-generator-arm.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 "src/compiler/code-generator.h"
 
 #include "src/arm/macro-assembler-arm.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 37 matching lines @@
   }
 
   LowDwVfpRegister ToFloat64Register(InstructionOperand* op) {
     return LowDwVfpRegister::from_code(ToDoubleRegister(op).code());
   }
 
   SBit OutputSBit() const {
     switch (instr_->flags_mode()) {
       case kFlags_branch:
       case kFlags_set:
+      case kFlags_select:
         return SetCC;
       case kFlags_none:
         return LeaveCC;
     }
     UNREACHABLE();
     return LeaveCC;
   }
 
   Operand InputImmediate(size_t index) {
     Constant constant = ToConstant(instr_->InputAt(index));
@@ skipping 842 matching lines @@
   // Materialize a full 32-bit 1 or 0 value. The result register is always the
   // last output of the instruction.
   DCHECK_NE(0u, instr->OutputCount());
   Register reg = i.OutputRegister(instr->OutputCount() - 1);
   Condition cc = FlagsConditionToCondition(condition);
   __ mov(reg, Operand(0));
   __ mov(reg, Operand(1), LeaveCC, cc);
 }
 
 
+void CodeGenerator::AssembleArchSelect(Instruction* instr,
+                                       FlagsCondition condition) {
+  // Unsupported.
+  UNREACHABLE();
+}
+
+
 void CodeGenerator::AssembleArchLookupSwitch(Instruction* instr) {
   ArmOperandConverter i(this, instr);
   Register input = i.InputRegister(0);
   for (size_t index = 2; index < instr->InputCount(); index += 2) {
     __ cmp(input, Operand(i.InputInt32(index + 0)));
     __ b(eq, GetLabel(i.InputRpo(index + 1)));
   }
   AssembleArchJump(i.InputRpo(1));
 }
 
@@ skipping 332 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8