MIPS: Generate StoreGlobal stubs with Hydrogen.

Port r15512 (bdf9918)

Original commit message:
- Constants globals are inlined into Hydrogen code using code dependencies that invalidate the Crankshafted code when global PropertyCells or the global object change.
- The more general case generates code that is just as good as the hand-written assembly stubs on all platforms.

BUG=

Review URL: https://codereview.chromium.org/18277005
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15525 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 2eefc82..727dee5 100644 (file)
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -238,6 +238,17 @@ void UnaryOpStub::InitializeInterfaceDescriptor(
 }
 
 
+void StoreGlobalStub::InitializeInterfaceDescriptor(
+    Isolate* isolate,
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { a1, a2, a0 };
+  descriptor->register_param_count_ = 3;
+  descriptor->register_params_ = registers;
+  descriptor->deoptimization_handler_ =
+      FUNCTION_ADDR(StoreIC_MissFromStubFailure);
+}
+
+
 #define __ ACCESS_MASM(masm)
 
 

diff --git a/src/mips/lithium-gap-resolver-mips.cc b/src/mips/lithium-gap-resolver-mips.cc
index 23a8f32..9705e1f 100644 (file)
--- a/src/mips/lithium-gap-resolver-mips.cc
+++ b/src/mips/lithium-gap-resolver-mips.cc
@@ -222,7 +222,6 @@ void LGapResolver::EmitMove(int index) {
       ASSERT(destination->IsStackSlot());
       __ sw(source_register, cgen_->ToMemOperand(destination));
     }
-
   } else if (source->IsStackSlot()) {
     MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsRegister()) {
@@ -259,6 +258,10 @@ void LGapResolver::EmitMove(int index) {
       } else {
         __ LoadObject(dst, cgen_->ToHandle(constant_source));
       }
+    } else if (source->IsDoubleRegister()) {
+      DoubleRegister result = cgen_->ToDoubleRegister(destination);
+      double v = cgen_->ToDouble(constant_source);
+      __ Move(result, v);
     } else {
       ASSERT(destination->IsStackSlot());
       ASSERT(!in_cycle_);  // Constant moves happen after all cycles are gone.