[stubs] Fixing issues found by machine graph verifier in code stubs.

src/builtins/builtins-number.cc

Index: src/builtins/builtins-number.cc
diff --git a/src/builtins/builtins-number.cc b/src/builtins/builtins-number.cc
index f09bcb2819345d9f044e8969f31946854848cc99..234fa54781f77ec92cd015b654c045b6746d95fb 100644
--- a/src/builtins/builtins-number.cc
+++ b/src/builtins/builtins-number.cc
@@ -1228,23 +1228,23 @@ TF_BUILTIN(Divide, CodeStubAssembler) {
         Label bailout(this);
 
         // Do floating point division if {divisor} is zero.
-        GotoIf(WordEqual(divisor, IntPtrConstant(0)), &bailout);
+        GotoIf(SmiEqual(divisor, SmiConstant(0)), &bailout);
 
         // Do floating point division {dividend} is zero and {divisor} is
         // negative.
         Label dividend_is_zero(this), dividend_is_not_zero(this);
-        Branch(WordEqual(dividend, IntPtrConstant(0)), &dividend_is_zero,
+        Branch(SmiEqual(dividend, SmiConstant(0)), &dividend_is_zero,
                &dividend_is_not_zero);
 
         Bind(&dividend_is_zero);
         {
-          GotoIf(IntPtrLessThan(divisor, IntPtrConstant(0)), &bailout);
+          GotoIf(SmiLessThan(divisor, SmiConstant(0)), &bailout);
           Goto(&dividend_is_not_zero);
         }
         Bind(&dividend_is_not_zero);
 
-        Node* untagged_divisor = SmiUntag(divisor);
-        Node* untagged_dividend = SmiUntag(dividend);
+        Node* untagged_divisor = SmiToWord32(divisor);
+        Node* untagged_dividend = SmiToWord32(dividend);
 
         // Do floating point division if {dividend} is kMinInt (or kMinInt - 1
         // if the Smi size is 31) and {divisor} is -1.
@@ -1269,7 +1269,7 @@ TF_BUILTIN(Divide, CodeStubAssembler) {
         Node* truncated = Int32Mul(untagged_result, untagged_divisor);
         // Do floating point division if the remainder is not 0.
         GotoIf(Word32NotEqual(untagged_dividend, truncated), &bailout);
-        var_result.Bind(SmiTag(untagged_result));
+        var_result.Bind(SmiFromWord32(untagged_result));
         Goto(&end);
 
         // Bailout: convert {dividend} and {divisor} to double and do double