S390: Store Floats as 4 bytes and Double as 8 bytes for codegen

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 1300 matching lines @@
         frame_access_state()->IncreaseSPDelta(kDoubleSize / kPointerSize);
       } else {
         __ Push(i.InputRegister(0));
         frame_access_state()->IncreaseSPDelta(1);
       }
       break;
     case kS390_PushFrame: {
       int num_slots = i.InputInt32(1);
       __ lay(sp, MemOperand(sp, -num_slots * kPointerSize));
       if (instr->InputAt(0)->IsFPRegister()) {
-        __ StoreDouble(i.InputDoubleRegister(0),
-                 MemOperand(sp));
+        LocationOperand* op = LocationOperand::cast(instr->InputAt(0));
+        if (op->representation() == MachineRepresentation::kFloat64) {
+          __ StoreDouble(i.InputDoubleRegister(0), MemOperand(sp));
+        } else {
+          DCHECK(op->representation() == MachineRepresentation::kFloat32);
+          __ StoreFloat32(i.InputDoubleRegister(0), MemOperand(sp));
+        }
       } else {
         __ StoreP(i.InputRegister(0),
                   MemOperand(sp));
       }
       break;
     }
     case kS390_StoreToStackSlot: {
       int slot = i.InputInt32(1);
       if (instr->InputAt(0)->IsFPRegister()) {
-        __ StoreDouble(i.InputDoubleRegister(0),
-                       MemOperand(sp, slot * kPointerSize));
+        LocationOperand* op = LocationOperand::cast(instr->InputAt(0));
+        if (op->representation() == MachineRepresentation::kFloat64) {
+          __ StoreDouble(i.InputDoubleRegister(0),
+                         MemOperand(sp, slot * kPointerSize));
+        } else {
+          DCHECK(op->representation() == MachineRepresentation::kFloat32);
+          __ StoreFloat32(i.InputDoubleRegister(0),
+                          MemOperand(sp, slot * kPointerSize));
+        }
       } else {
         __ StoreP(i.InputRegister(0), MemOperand(sp, slot * kPointerSize));
       }
       break;
     }
     case kS390_ExtendSignWord8:
 #if V8_TARGET_ARCH_S390X
       __ lgbr(i.OutputRegister(), i.InputRegister(0));
 #else
       __ lbr(i.OutputRegister(), i.InputRegister(0));
@@ skipping 666 matching lines @@
         __ StoreDouble(dst, g.ToMemOperand(destination));
       }
     }
   } else if (source->IsFPRegister()) {
     DoubleRegister src = g.ToDoubleRegister(source);
     if (destination->IsFPRegister()) {
       DoubleRegister dst = g.ToDoubleRegister(destination);
       __ Move(dst, src);
     } else {
       DCHECK(destination->IsFPStackSlot());
-      __ StoreDouble(src, g.ToMemOperand(destination));
+      LocationOperand* op = LocationOperand::cast(source);
+      if (op->representation() == MachineRepresentation::kFloat64) {
+        __ StoreDouble(src, g.ToMemOperand(destination));
+      } else {
+        __ StoreFloat32(src, g.ToMemOperand(destination));
+      }
     }
   } else if (source->IsFPStackSlot()) {
     DCHECK(destination->IsFPRegister() || destination->IsFPStackSlot());
     MemOperand src = g.ToMemOperand(source);
     if (destination->IsFPRegister()) {
-      __ LoadDouble(g.ToDoubleRegister(destination), src);
+      LocationOperand* op = LocationOperand::cast(source);
+      if (op->representation() == MachineRepresentation::kFloat64) {
+        __ LoadDouble(g.ToDoubleRegister(destination), src);
+      } else {
+        __ LoadFloat32(g.ToDoubleRegister(destination), src);
+      }
     } else {
+      LocationOperand* op = LocationOperand::cast(source);
       DoubleRegister temp = kScratchDoubleReg;
-      __ LoadDouble(temp, src);
-      __ StoreDouble(temp, g.ToMemOperand(destination));
+      if (op->representation() == MachineRepresentation::kFloat64) {
+        __ LoadDouble(temp, src);
+        __ StoreDouble(temp, g.ToMemOperand(destination));
+      } else {
+        __ LoadFloat32(temp, src);
+        __ StoreFloat32(temp, g.ToMemOperand(destination));
+      }
     }
   } else {
     UNREACHABLE();
   }
 }
 
 void CodeGenerator::AssembleSwap(InstructionOperand* source,
                                  InstructionOperand* destination) {
   S390OperandConverter g(this, nullptr);
   // Dispatch on the source and destination operand kinds.  Not all
@@ skipping 85 matching lines @@
       padding_size -= 2;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8