[arm] Implement Float(32|64)(Min|Max) using vsel.

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/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
@@ skipping 1128 matching lines @@
       __ vldr(i.OutputFloat64Register(), i.InputOffset());
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     case kArmVstrF64: {
       size_t index = 0;
       MemOperand operand = i.InputOffset(&index);
       __ vstr(i.InputFloat64Register(index), operand);
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     }
+    case kArmFloat32Max: {
+      CpuFeatureScope scope(masm(), ARMv8);
+      // (b < a) ? a : b
+      SwVfpRegister a = i.InputFloat32Register(0);
+      SwVfpRegister b = i.InputFloat32Register(1);
+      SwVfpRegister result = i.OutputFloat32Register(0);
+      __ VFPCompareAndSetFlags(a, b);
+      __ vsel(gt, result, a, b);
+      break;
+    }
+    case kArmFloat32Min: {
+      CpuFeatureScope scope(masm(), ARMv8);
+      // (a < b) ? a : b
+      SwVfpRegister a = i.InputFloat32Register(0);
+      SwVfpRegister b = i.InputFloat32Register(1);
+      SwVfpRegister result = i.OutputFloat32Register(0);
+      __ VFPCompareAndSetFlags(b, a);
+      __ vsel(gt, result, a, b);
+      break;
+    }
+    case kArmFloat64Max: {
+      CpuFeatureScope scope(masm(), ARMv8);
+      // (b < a) ? a : b
+      DwVfpRegister a = i.InputFloat64Register(0);
+      DwVfpRegister b = i.InputFloat64Register(1);
+      DwVfpRegister result = i.OutputFloat64Register(0);
+      __ VFPCompareAndSetFlags(a, b);
+      __ vsel(gt, result, a, b);
+      break;
+    }
+    case kArmFloat64Min: {
+      CpuFeatureScope scope(masm(), ARMv8);
+      // (a < b) ? a : b
+      DwVfpRegister a = i.InputFloat64Register(0);
+      DwVfpRegister b = i.InputFloat64Register(1);
+      DwVfpRegister result = i.OutputFloat64Register(0);
+      __ VFPCompareAndSetFlags(b, a);
+      __ vsel(gt, result, a, b);
+      break;
+    }
     case kArmPush:
       if (instr->InputAt(0)->IsDoubleRegister()) {
         __ vpush(i.InputDoubleRegister(0));
         frame_access_state()->IncreaseSPDelta(kDoubleSize / kPointerSize);
       } else {
         __ push(i.InputRegister(0));
         frame_access_state()->IncreaseSPDelta(1);
       }
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
@@ skipping 424 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8