MIPS: [turbofan] Combine ChangeFloat64ToInt32 with Float64Round ops.

src/compiler/mips64/code-generator-mips64.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/ast/scopes.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 1012 matching lines @@
       break;
     }
     case kMips64CvtDUl: {
       __ Cvt_d_ul(i.OutputDoubleRegister(), i.InputRegister(0));
       break;
     }
     case kMips64CvtSUl: {
       __ Cvt_s_ul(i.OutputDoubleRegister(), i.InputRegister(0));
       break;
     }
+    case kMips64FloorWD: {
+      FPURegister scratch = kScratchDoubleReg;
+      __ floor_w_d(scratch, i.InputDoubleRegister(0));
+      __ mfc1(i.OutputRegister(), scratch);
+      break;
+    }
+    case kMips64CeilWD: {
+      FPURegister scratch = kScratchDoubleReg;
+      __ ceil_w_d(scratch, i.InputDoubleRegister(0));
+      __ mfc1(i.OutputRegister(), scratch);
+      break;
+    }
+    case kMips64RoundWD: {
+      FPURegister scratch = kScratchDoubleReg;
+      __ round_w_d(scratch, i.InputDoubleRegister(0));
+      __ mfc1(i.OutputRegister(), scratch);
+      break;
+    }
     case kMips64TruncWD: {
       FPURegister scratch = kScratchDoubleReg;
       // Other arches use round to zero here, so we follow.
       __ trunc_w_d(scratch, i.InputDoubleRegister(0));
       __ mfc1(i.OutputRegister(), scratch);
       break;
     }
     case kMips64TruncLS: {
       FPURegister scratch = kScratchDoubleReg;
       // Other arches use round to zero here, so we follow.
@@ skipping 744 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8