Enable optimization of functions with generic switches.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index f6d3ea36ab8ce6e0ce21759ce369e8be34db2666..6585b55a05cfa09094acfb12baccaa3cf46d6d36 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1025,6 +1025,16 @@ void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) {
     CallIC(ic, RelocInfo::CODE_TARGET, clause->CompareId());
     patch_site.EmitPatchInfo();
 
+    Label skip;
+    __ b(&skip);
+    PrepareForBailout(clause, TOS_REG);
+    __ LoadRoot(ip, Heap::kTrueValueRootIndex);
+    __ cmp(r0, ip);
+    __ b(ne, &next_test);
+    __ Drop(1);
+    __ jmp(clause->body_target());
+    __ bind(&skip);
+
     __ cmp(r0, Operand::Zero());
     __ b(ne, &next_test);
     __ Drop(1);  // Switch value is no longer needed.