Multiple stubs can point to the same calling convention.

src/ia32/interface-descriptors-ia32.cc

Index: src/ia32/interface-descriptors-ia32.cc
diff --git a/src/ia32/interface-descriptors-ia32.cc b/src/ia32/interface-descriptors-ia32.cc
index 3d3b7a0fcb3f46fd2f63ca638606eb97837bc46d..9f7cf263e4f61b6bd3dc081341a0ecbec854d95f 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.cc
@@ -6,6 +6,7 @@
 
 #if V8_TARGET_ARCH_IA32
 
+#include "src/ic/ic-conventions.h"
 #include "src/interface-descriptors.h"
 
 namespace v8 {
@@ -15,6 +16,155 @@ const Register InterfaceDescriptor::ContextRegister() { return esi; }
 
 
 void CallDescriptors::InitializeForIsolate(Isolate* isolate) {
+  InitializeForIsolateAllPlatforms(isolate);
+
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::FastNewClosureCall);
+    Register registers[] = {esi, ebx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::FastNewContextCall);
+    Register registers[] = {esi, edi};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::ToNumberCall);
+    // ToNumberStub invokes a function, and therefore needs a context.
+    Register registers[] = {esi, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::NumberToStringCall);
+    Register registers[] = {esi, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::FastCloneShallowArrayCall);
+    Register registers[] = {esi, eax, ebx, ecx};
+    Representation representations[] = {
+        Representation::Tagged(), Representation::Tagged(),
+        Representation::Smi(), Representation::Tagged()};
+    descriptor->Initialize(arraysize(registers), registers, representations);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::FastCloneShallowObjectCall);
+    Register registers[] = {esi, eax, ebx, ecx, edx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::CreateAllocationSiteCall);
+    Register registers[] = {esi, ebx, edx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::CallFunctionCall);
+    Register registers[] = {esi, edi};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::CallConstructCall);
+    // eax : number of arguments
+    // ebx : feedback vector
+    // edx : (only if ebx is not the megamorphic symbol) slot in feedback
+    //       vector (Smi)
+    // edi : constructor function
+    // TODO(turbofan): So far we don't gather type feedback and hence skip the
+    // slot parameter, but ArrayConstructStub needs the vector to be undefined.
+    Register registers[] = {esi, eax, edi, ebx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::RegExpConstructResultCall);
+    Register registers[] = {esi, ecx, ebx, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::TransitionElementsKindCall);
+    Register registers[] = {esi, eax, ebx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
+        CallDescriptorKey::ArrayConstructorConstantArgCountCall);
+    // register state
+    // eax -- number of arguments
+    // edi -- function
+    // ebx -- allocation site with elements kind
+    Register registers[] = {esi, edi, ebx};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::ArrayConstructorCall);
+    // stack param count needs (constructor pointer, and single argument)
+    Register registers[] = {esi, edi, ebx, eax};
+    Representation representations[] = {
+        Representation::Tagged(), Representation::Tagged(),
+        Representation::Tagged(), Representation::Integer32()};
+    descriptor->Initialize(arraysize(registers), registers, representations);
+  }
+  {
+    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
+        CallDescriptorKey::InternalArrayConstructorConstantArgCountCall);
+    // register state
+    // eax -- number of arguments
+    // edi -- function
+    Register registers[] = {esi, edi};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
+        CallDescriptorKey::InternalArrayConstructorCall);
+    // stack param count needs (constructor pointer, and single argument)
+    Register registers[] = {esi, edi, eax};
+    Representation representations[] = {Representation::Tagged(),
+                                        Representation::Tagged(),
+                                        Representation::Integer32()};
+    descriptor->Initialize(arraysize(registers), registers, representations);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::CompareNilCall);
+    Register registers[] = {esi, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::ToBooleanCall);
+    Register registers[] = {esi, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::BinaryOpCall);
+    Register registers[] = {esi, edx, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor = isolate->call_descriptor(
+        CallDescriptorKey::BinaryOpWithAllocationSiteCall);
+    Register registers[] = {esi, ecx, edx, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(CallDescriptorKey::StringAddCall);
+    Register registers[] = {esi, edx, eax};
+    descriptor->Initialize(arraysize(registers), registers, NULL);
+  }
+
   {
     CallInterfaceDescriptor* descriptor =
         isolate->call_descriptor(CallDescriptorKey::ArgumentAdaptorCall);