Thumb2 Backend: Enable Crankshaft to compile all Optimized Functions in Thumb2 mode

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 5858eac6294610656a0df56b7fc5c64d0d739856..f815dca1e815f572089a90456f90db4f954e32fb 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -359,6 +359,7 @@ void FastNewClosureStub::Generate(MacroAssembler* masm) {
   __ LoadRoot(r4, Heap::kUndefinedValueRootIndex);
   __ str(r4, FieldMemOperand(r0, JSFunction::kNextFunctionLinkOffset));
   __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kCodeOffset));
+  __ CheckModeBit(r3);
   __ add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ str(r3, FieldMemOperand(r0, JSFunction::kCodeEntryOffset));
 
@@ -405,6 +406,7 @@ void FastNewClosureStub::Generate(MacroAssembler* masm) {
   // TODO(fschneider): Idea: store proper code pointers in the map and either
   // unmangle them on marking or do nothing as the whole map is discarded on
   // major GC anyway.
+  __ CheckModeBit(r4);
   __ add(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ str(r4, FieldMemOperand(r0, JSFunction::kCodeEntryOffset));
 
@@ -3241,6 +3243,8 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
     // (See LCodeGen::DoDeferredLInstanceOfKnownGlobal)
     __ LoadFromSafepointRegisterSlot(scratch, r4);
     __ sub(inline_site, lr, scratch);
+    __ tst(inline_site, Operand(3));
+    __ add(inline_site, inline_site, Operand(4), LeaveCC, ne);
     // Get the map location in scratch and patch it.
     __ GetRelocatedValueLocation(inline_site, scratch);
     __ ldr(scratch, MemOperand(scratch));
@@ -3273,7 +3277,10 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
   } else {
     // Patch the call site to return true.
     __ LoadRoot(r0, Heap::kTrueValueRootIndex);
-    __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult));
+    __ tst(inline_site, Operand(3));
+    __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult),
+           LeaveCC, eq);
+    __ add(inline_site, inline_site, Operand(14), LeaveCC, ne);
     // Get the boolean result location in scratch and patch it.
     __ GetRelocatedValueLocation(inline_site, scratch);
     __ str(r0, MemOperand(scratch));
@@ -3291,7 +3298,10 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
   } else {
     // Patch the call site to return false.
     __ LoadRoot(r0, Heap::kFalseValueRootIndex);
-    __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult));
+    __ tst(inline_site, Operand(3));
+    __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult),
+           LeaveCC, eq);
+    __ add(inline_site, inline_site, Operand(14), LeaveCC, ne);
     // Get the boolean result location in scratch and patch it.
     __ GetRelocatedValueLocation(inline_site, scratch);
     __ str(r0, MemOperand(scratch));
@@ -6847,6 +6857,8 @@ void ProfileEntryHookStub::Generate(MacroAssembler* masm) {
 
   // Save all caller-save registers as this may be called from anywhere.
   __ stm(db_w, sp, kSavedRegs | lr.bit());
+  __ tst(lr, Operand(1));
+  __ add(lr, lr, Operand(1), LeaveCC, ne);
 
   // Compute the function's address for the first argument.
   __ sub(r0, lr, Operand(kReturnAddressDistanceFromFunctionStart));