PPC/s390: [builtins] CompileLazy bailed out to the runtime entirely too often.

Port 743fdb25

Original Commit Message:

    This is just a bug. CompileLazy knows how to look in the
    SharedFunctionInfo for code (or bytecode, essentially) if it
    finds nothing in the OptimizedCodeMap. Ensure that behavior.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=681543
LOG=N

Review-Url: https://codereview.chromium.org/2641473002
Cr-Commit-Position: refs/heads/master@{#42422}

src/builtins/ppc/builtins-ppc.cc

@@ -1372,7 +1372,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
            FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ LoadP(index, FieldMemOperand(map, FixedArray::kLengthOffset));
   __ CmpSmiLiteral(index, Smi::FromInt(2), r0);
-  __ blt(&gotta_call_runtime);
+  __ blt(&try_shared);
 
   // r10 : native context
   // r5  : length / index
@@ -1437,9 +1437,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ CmpSmiLiteral(index, Smi::FromInt(1), r0);
   __ bgt(&loop_top);
 
-  // We found no code.
-  __ b(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ LoadP(entry,
            FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));

src/builtins/s390/builtins-s390.cc

@@ -1377,7 +1377,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
            FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ LoadP(index, FieldMemOperand(map, FixedArray::kLengthOffset));
   __ CmpSmiLiteral(index, Smi::FromInt(2), r0);
-  __ blt(&gotta_call_runtime);
+  __ blt(&try_shared);
 
   // Find literals.
   // r9 : native context
@@ -1443,9 +1443,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ CmpSmiLiteral(index, Smi::FromInt(1), r0);
   __ bgt(&loop_top);
 
-  // We found no code.
-  __ b(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ LoadP(entry,
            FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));