[builtins] CompileLazy bailed out to the runtime entirely too often.

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.

BUG=681543
R=leszeks@chromium.org

Review-Url: https://codereview.chromium.org/2636143002
Cr-Commit-Position: refs/heads/master@{#42409}

src/builtins/arm/builtins-arm.cc

@@ -1354,7 +1354,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
          FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ ldr(index, FieldMemOperand(map, FixedArray::kLengthOffset));
   __ cmp(index, Operand(Smi::FromInt(2)));
-  __ b(lt, &gotta_call_runtime);
+  __ b(lt, &try_shared);
 
   // r3  : native context
   // r2  : length / index
@@ -1419,9 +1419,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ cmp(index, Operand(Smi::FromInt(1)));
   __ b(gt, &loop_top);
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);

src/builtins/arm64/builtins-arm64.cc

@@ -1357,7 +1357,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
          FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ Ldrsw(index, UntagSmiFieldMemOperand(map, FixedArray::kLengthOffset));
   __ Cmp(index, Operand(2));
-  __ B(lt, &gotta_call_runtime);
+  __ B(lt, &try_shared);
 
   // x3  : native context
   // x2  : length / index
@@ -1416,9 +1416,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ Cmp(index, Operand(1));
   __ B(gt, &loop_top);
 
-  // We found no code.
-  __ B(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ Bind(&try_shared);
   __ Ldr(entry,
          FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));

src/builtins/ia32/builtins-ia32.cc

@@ -1040,7 +1040,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ mov(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ mov(index, FieldOperand(map, FixedArray::kLengthOffset));
   __ cmp(index, Immediate(Smi::FromInt(2)));
-  __ j(less, &gotta_call_runtime);
+  __ j(less, &try_shared);
 
   // edx : native context
   // ebx : length / index
@@ -1100,9 +1100,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ cmp(index, Immediate(Smi::FromInt(1)));
   __ j(greater, &loop_top);
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);

src/builtins/mips/builtins-mips.cc

@@ -1364,7 +1364,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ lw(map, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   __ lw(map, FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ lw(index, FieldMemOperand(map, FixedArray::kLengthOffset));
-  __ Branch(&gotta_call_runtime, lt, index, Operand(Smi::FromInt(2)));
+  __ Branch(&try_shared, lt, index, Operand(Smi::FromInt(2)));
 
   // a3  : native context
   // a2  : length / index
@@ -1429,9 +1429,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
           Operand(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
   __ Branch(&loop_top, gt, index, Operand(Smi::FromInt(1)));
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);

src/builtins/mips64/builtins-mips64.cc

@@ -1355,7 +1355,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ ld(map, FieldMemOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   __ ld(map, FieldMemOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ ld(index, FieldMemOperand(map, FixedArray::kLengthOffset));
-  __ Branch(&gotta_call_runtime, lt, index, Operand(Smi::FromInt(2)));
+  __ Branch(&try_shared, lt, index, Operand(Smi::FromInt(2)));
 
   // a3  : native context
   // a2  : length / index
@@ -1420,9 +1420,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
            Operand(Smi::FromInt(SharedFunctionInfo::kEntryLength)));
   __ Branch(&loop_top, gt, index, Operand(Smi::FromInt(1)));
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ pop(closure);
   __ pop(new_target);

src/builtins/x64/builtins-x64.cc

@@ -1004,7 +1004,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ movp(map, FieldOperand(map, SharedFunctionInfo::kOptimizedCodeMapOffset));
   __ SmiToInteger32(index, FieldOperand(map, FixedArray::kLengthOffset));
   __ cmpl(index, Immediate(2));
-  __ j(less, &gotta_call_runtime);
+  __ j(less, &try_shared);
 
   // r14 : native context
   // r9  : length / index
@@ -1061,9 +1061,7 @@ void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   __ cmpl(index, Immediate(1));
   __ j(greater, &loop_top);
 
-  // We found no code.
-  __ jmp(&gotta_call_runtime);
-
+  // We found no code. Try the SharedFunctionInfo.
   __ bind(&try_shared);
   __ movp(entry, FieldOperand(closure, JSFunction::kSharedFunctionInfoOffset));
   // Is the shared function marked for tier up?