PPC/S390: use 32bit load to fix endianess issue

R=joransiu@ca.ibm.com, jyan@ca.ibm.com
BUG=
LOG=N

Change-Id: I353f953b6b2d9c20ebd9d141b33da47761f3e43b
Reviewed-on: https://chromium-review.googlesource.com/653808Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Jaideep Bajwa <bjaideep@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#47860}

src/compiler/ppc/code-generator-ppc.cc

@@ -1005,7 +1005,7 @@ void CodeGenerator::BailoutIfDeoptimized() {
   __ bind(&current);
   int offset =
       Code::kKindSpecificFlags1Offset - (Code::kHeaderSize + pc_offset);
-  __ LoadP(r11, MemOperand(r11, offset));
+  __ LoadWordArith(r11, MemOperand(r11, offset));
   __ TestBit(r11, Code::kMarkedForDeoptimizationBit);
   Handle<Code> code = isolate()->builtins()->builtin_handle(
       Builtins::kCompileLazyDeoptimizedCode);

src/compiler/s390/code-generator-s390.cc

@@ -1204,7 +1204,7 @@ void CodeGenerator::BailoutIfDeoptimized() {
   __ bind(&current);
   int offset =
       Code::kKindSpecificFlags1Offset - (Code::kHeaderSize + pc_offset);
-  __ LoadP(ip, MemOperand(r1, offset));
+  __ LoadW(ip, MemOperand(r1, offset));
   __ TestBit(ip, Code::kMarkedForDeoptimizationBit);
   Handle<Code> code = isolate()->builtins()->builtin_handle(
       Builtins::kCompileLazyDeoptimizedCode);