PPC/s390: Remove unnecessary duplication of FunctionKind enums in CompilerHints

Port 7a82be3d

Original commit message:

    The duplicated enum values are only used by the FastNewClosureStub,
    so inline them there, with the help of one new constant (kFunctionKindShift)
    in SharedFunctionInfo.

R=adamk@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, bjaideep@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2391343003
Cr-Commit-Position: refs/heads/master@{#40017}

src/builtins/ppc/builtins-ppc.cc

@@ -2452,7 +2452,9 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
   Label class_constructor;
   __ LoadP(r5, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
   __ lwz(r6, FieldMemOperand(r5, SharedFunctionInfo::kCompilerHintsOffset));
-  __ TestBitMask(r6, SharedFunctionInfo::kClassConstructorBits, r0);
+  __ TestBitMask(r6, FunctionKind::kClassConstructor
+                         << SharedFunctionInfo::kFunctionKindShift,
+                 r0);
   __ bne(&class_constructor, cr0);
 
   // Enter the context of the function; ToObject has to run in the function

src/builtins/s390/builtins-s390.cc

@@ -2461,7 +2461,9 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
   Label class_constructor;
   __ LoadP(r4, FieldMemOperand(r3, JSFunction::kSharedFunctionInfoOffset));
   __ LoadlW(r5, FieldMemOperand(r4, SharedFunctionInfo::kCompilerHintsOffset));
-  __ TestBitMask(r5, SharedFunctionInfo::kClassConstructorBits, r0);
+  __ TestBitMask(r5, FunctionKind::kClassConstructor
+                         << SharedFunctionInfo::kFunctionKindShift,
+                 r0);
   __ bne(&class_constructor);
 
   // Enter the context of the function; ToObject has to run in the function