S390: Use FIEBRA/FIDBRA for FP Floor/Ceil

src/compiler/s390/code-generator-s390.cc

 // Copyright 2015 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/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 1185 matching lines @@
       __ ltgr(i.OutputRegister(), r0);  // Copy R0: Remainder to output
       break;
 #endif
     case kS390_AbsFloat:
       __ lpebr(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
       break;
     case kS390_SqrtFloat:
       ASSEMBLE_FLOAT_UNOP(sqebr);
       break;
     case kS390_FloorFloat:
-      //      ASSEMBLE_FLOAT_UNOP_RC(frim);
-      __ FloatFloor32(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
-                      kScratchReg);
+      __ fiebra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
+                v8::internal::Assembler::FIDBRA_ROUND_TOWARD_NEG_INF);
       break;
     case kS390_CeilFloat:
-      __ FloatCeiling32(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
-                        kScratchReg, kScratchDoubleReg);
+      __ fiebra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
+                v8::internal::Assembler::FIDBRA_ROUND_TOWARD_POS_INF);
       break;
     case kS390_TruncateFloat:
       __ fiebra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
                 v8::internal::Assembler::FIDBRA_ROUND_TOWARD_0);
       break;
     //  Double operations
     case kS390_ModDouble:
       ASSEMBLE_FLOAT_MODULO();
       break;
     case kS390_Neg:
       __ LoadComplementRR(i.OutputRegister(), i.InputRegister(0));
       break;
     case kS390_MaxDouble:
       ASSEMBLE_FLOAT_MAX(kScratchDoubleReg, kScratchReg);
       break;
     case kS390_MinDouble:
       ASSEMBLE_FLOAT_MIN(kScratchDoubleReg, kScratchReg);
       break;
     case kS390_AbsDouble:
       __ lpdbr(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
       break;
     case kS390_SqrtDouble:
       ASSEMBLE_FLOAT_UNOP(sqdbr);
       break;
     case kS390_FloorDouble:
-      __ FloatFloor64(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
-                      kScratchReg);
+      __ fidbra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
+                v8::internal::Assembler::FIDBRA_ROUND_TOWARD_NEG_INF);
       break;
     case kS390_CeilDouble:
-      __ FloatCeiling64(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
-                        kScratchReg, kScratchDoubleReg);
+      __ fidbra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
+                v8::internal::Assembler::FIDBRA_ROUND_TOWARD_POS_INF);
       break;
     case kS390_TruncateDouble:
       __ fidbra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
                 v8::internal::Assembler::FIDBRA_ROUND_TOWARD_0);
       break;
     case kS390_RoundDouble:
       __ fidbra(i.OutputDoubleRegister(), i.InputDoubleRegister(0),
                 v8::internal::Assembler::FIDBRA_ROUND_TO_NEAREST_AWAY_FROM_0);
       break;
     case kS390_NegDouble:
@@ skipping 824 matching lines @@
       padding_size -= 2;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8