X64: enable stack sampling in profiler.

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
diff --git a/src/ia32/codegen-ia32.cc b/src/ia32/codegen-ia32.cc
index 664827719bb99a77b8c6e251508b5c9803b20f76..bbc5d5345154dbe66a3ef8b7f69b06b8c929ac63 100644
--- a/src/ia32/codegen-ia32.cc
+++ b/src/ia32/codegen-ia32.cc
@@ -5154,11 +5154,10 @@ void CodeGenerator::GenerateObjectEquals(ZoneList<Expression*>* args) {
 
 void CodeGenerator::GenerateGetFramePointer(ZoneList<Expression*>* args) {
   ASSERT(args->length() == 0);
-  ASSERT(kSmiTagSize == 1 && kSmiTag == 0);  // shifting code depends on this
+  ASSERT(kSmiTag == 0);  // EBP value is aligned, so it should look like Smi.
   Result ebp_as_smi = allocator_->Allocate();
   ASSERT(ebp_as_smi.is_valid());
   __ mov(ebp_as_smi.reg(), Operand(ebp));
-  __ shr(ebp_as_smi.reg(), kSmiTagSize);
   frame_->Push(&ebp_as_smi);
 }