Introduce x87 port

src/x87/stub-cache-x87.cc

Index: src/x87/stub-cache-x87.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/x87/stub-cache-x87.cc
similarity index 98%
copy from src/ia32/stub-cache-ia32.cc
copy to src/x87/stub-cache-x87.cc
index 3f3fd0dcb32960f8f38072db35ed3b9297d3cc99..a954545aafe57c5b4f2ddab34ea2a53a14eee7d5 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/x87/stub-cache-x87.cc
@@ -4,7 +4,7 @@
 
 #include "v8.h"
 
-#if V8_TARGET_ARCH_IA32
+#if V8_TARGET_ARCH_X87
 
 #include "ic-inl.h"
 #include "codegen.h"
@@ -527,17 +527,19 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
 
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiUntag(value_reg);
-    __ Cvtsi2sd(xmm0, value_reg);
+    __ push(value_reg);
+    __ fild_s(Operand(esp, 0));
+    __ pop(value_reg);
     __ SmiTag(value_reg);
     __ jmp(&do_store);
 
     __ bind(&heap_number);
     __ CheckMap(value_reg, masm->isolate()->factory()->heap_number_map(),
                 miss_label, DONT_DO_SMI_CHECK);
-    __ movsd(xmm0, FieldOperand(value_reg, HeapNumber::kValueOffset));
+    __ fld_d(FieldOperand(value_reg, HeapNumber::kValueOffset));
 
     __ bind(&do_store);
-    __ movsd(FieldOperand(storage_reg, HeapNumber::kValueOffset), xmm0);
+    __ fstp_d(FieldOperand(storage_reg, HeapNumber::kValueOffset));
   }
 
   // Stub never generated for non-global objects that require access
@@ -571,7 +573,6 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
                       HeapObject::kMapOffset,
                       scratch1,
                       scratch2,
-                      kDontSaveFPRegs,
                       OMIT_REMEMBERED_SET,
                       OMIT_SMI_CHECK);
 
@@ -610,7 +611,6 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
                           offset,
                           storage_reg,
                           scratch1,
-                          kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
@@ -634,7 +634,6 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
                           offset,
                           storage_reg,
                           receiver_reg,
-                          kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
@@ -704,15 +703,17 @@ void StoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
     Label do_store, heap_number;
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiUntag(value_reg);
-    __ Cvtsi2sd(xmm0, value_reg);
+    __ push(value_reg);
+    __ fild_s(Operand(esp, 0));
+    __ pop(value_reg);
     __ SmiTag(value_reg);
     __ jmp(&do_store);
     __ bind(&heap_number);
     __ CheckMap(value_reg, masm->isolate()->factory()->heap_number_map(),
                 miss_label, DONT_DO_SMI_CHECK);
-    __ movsd(xmm0, FieldOperand(value_reg, HeapNumber::kValueOffset));
+    __ fld_d(FieldOperand(value_reg, HeapNumber::kValueOffset));
     __ bind(&do_store);
-    __ movsd(FieldOperand(scratch1, HeapNumber::kValueOffset), xmm0);
+    __ fstp_d(FieldOperand(scratch1, HeapNumber::kValueOffset));
     // Return the value (register eax).
     ASSERT(value_reg.is(eax));
     __ ret(0);
@@ -736,7 +737,6 @@ void StoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
                           offset,
                           name_reg,
                           scratch1,
-                          kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
@@ -755,7 +755,6 @@ void StoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
                           offset,
                           name_reg,
                           receiver_reg,
-                          kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
@@ -1506,4 +1505,4 @@ void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
 
 } }  // namespace v8::internal
 
-#endif  // V8_TARGET_ARCH_IA32
+#endif  // V8_TARGET_ARCH_X87