PPC/S390: Fix to use 32 bit load

The testcase was failing on BE, fix to use 32bit load
before calling testbit.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
Log=N

Bug: 
Change-Id: I075666b47dd90b6341ba7b4031cd4be96e8c1bf9
Reviewed-on: https://chromium-review.googlesource.com/628659Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Jaideep Bajwa <bjaideep@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#47556}

src/builtins/ppc/builtins-ppc.cc

@@ -1082,8 +1082,9 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
     // Check if the optimized code is marked for deopt. If it is, call the
     // runtime to clear it.
     Label found_deoptimized_code;
-    __ LoadP(scratch2, FieldMemOperand(optimized_code_entry,
-                                       Code::kKindSpecificFlags1Offset));
+    __ LoadWordArith(
+        scratch2,
+        FieldMemOperand(optimized_code_entry, Code::kKindSpecificFlags1Offset));
     __ TestBit(scratch2, Code::kMarkedForDeoptimizationBit, r0);
     __ bne(&found_deoptimized_code, cr0);
 

src/builtins/s390/builtins-s390.cc

@@ -1081,7 +1081,7 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
     // Check if the optimized code is marked for deopt. If it is, call the
     // runtime to clear it.
     Label found_deoptimized_code;
-    __ LoadP(scratch2, FieldMemOperand(optimized_code_entry,
+    __ LoadW(scratch2, FieldMemOperand(optimized_code_entry,
                                        Code::kKindSpecificFlags1Offset));
     __ TestBit(scratch2, Code::kMarkedForDeoptimizationBit, r0);
     __ bne(&found_deoptimized_code);