[stubs] Renames WordIsSmi to TaggedIsSmi, introducing an appropriate bitcast of the parameter.

src/builtins/builtins-global.cc

Index: src/builtins/builtins-global.cc
diff --git a/src/builtins/builtins-global.cc b/src/builtins/builtins-global.cc
index 2205788cfc11b573ca67d34cce2100ec2472449f..77fdadbf6e2e03a8f2f3c6ed132e766f4a234c19 100644
--- a/src/builtins/builtins-global.cc
+++ b/src/builtins/builtins-global.cc
@@ -121,7 +121,7 @@ void Builtins::Generate_GlobalIsFinite(CodeStubAssembler* assembler) {
     Node* num = var_num.value();
 
     // Check if {num} is a Smi or a HeapObject.
-    assembler->GotoIf(assembler->WordIsSmi(num), &return_true);
+    assembler->GotoIf(assembler->TaggedIsSmi(num), &return_true);
 
     // Check if {num} is a HeapNumber.
     Label if_numisheapnumber(assembler),
@@ -176,7 +176,7 @@ void Builtins::Generate_GlobalIsNaN(CodeStubAssembler* assembler) {
     Node* num = var_num.value();
 
     // Check if {num} is a Smi or a HeapObject.
-    assembler->GotoIf(assembler->WordIsSmi(num), &return_false);
+    assembler->GotoIf(assembler->TaggedIsSmi(num), &return_false);
 
     // Check if {num} is a HeapNumber.
     Label if_numisheapnumber(assembler),