X87: Remove receiver conversion from function prologue.

src/crankshaft/x87/lithium-codegen-x87.cc

Index: src/crankshaft/x87/lithium-codegen-x87.cc
diff --git a/src/crankshaft/x87/lithium-codegen-x87.cc b/src/crankshaft/x87/lithium-codegen-x87.cc
index 28120d3293ffe9a643f9dd39695aebfcd49baec3..4d71d81f8ea4e1f7eee64689682ea18a484af503 100644
--- a/src/crankshaft/x87/lithium-codegen-x87.cc
+++ b/src/crankshaft/x87/lithium-codegen-x87.cc
@@ -107,26 +107,6 @@ bool LCodeGen::GeneratePrologue() {
     }
 #endif
 
-    // Sloppy mode functions and builtins need to replace the receiver with the
-    // global proxy when called as functions (without an explicit receiver
-    // object).
-    if (info()->MustReplaceUndefinedReceiverWithGlobalProxy()) {
-      Label ok;
-      // +1 for return address.
-      int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize;
-      __ mov(ecx, Operand(esp, receiver_offset));
-
-      __ cmp(ecx, isolate()->factory()->undefined_value());
-      __ j(not_equal, &ok, Label::kNear);
-
-      __ mov(ecx, GlobalObjectOperand());
-      __ mov(ecx, FieldOperand(ecx, JSGlobalObject::kGlobalProxyOffset));
-
-      __ mov(Operand(esp, receiver_offset), ecx);
-
-      __ bind(&ok);
-    }
-
     if (support_aligned_spilled_doubles_ && dynamic_frame_alignment_) {
       // Move state of dynamic frame alignment into edx.
       __ Move(edx, Immediate(kNoAlignmentPadding));