X87: Initialize CodeStubInterfaceDescriptor in the constructor.

port r23773.

original commit message:

  Initialize CodeStubInterfaceDescriptor in the constructor.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/563133002

Patch from Jing Bao <jing.bao@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23890 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index f9358aa..7fd43b8 100644 (file)
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -115,8 +115,7 @@ void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm) {
   // Update the static counter each time a new code stub is generated.
   isolate()->counters()->code_stubs()->Increment();
 
-  CodeStubInterfaceDescriptor descriptor;
-  InitializeInterfaceDescriptor(&descriptor);
+  CodeStubInterfaceDescriptor descriptor(this);
   int param_count = descriptor.GetEnvironmentParameterCount();
   {
     // Call the runtime system in a fresh internal frame.

diff --git a/src/x87/lithium-x87.cc b/src/x87/lithium-x87.cc
index f93ed62..61aebdf 100644 (file)
--- a/src/x87/lithium-x87.cc
+++ b/src/x87/lithium-x87.cc
@@ -2490,8 +2490,7 @@ LInstruction* LChunkBuilder::DoParameter(HParameter* instr) {
     return DefineAsSpilled(result, spill_index);
   } else {
     DCHECK(info()->IsStub());
-    CodeStubInterfaceDescriptor descriptor;
-    info()->code_stub()->InitializeInterfaceDescriptor(&descriptor);
+    CodeStubInterfaceDescriptor descriptor(info()->code_stub());
     int index = static_cast<int>(instr->index());
     Register reg = descriptor.GetEnvironmentParameterRegister(index);
     return DefineFixed(result, reg);