Implement simple switch statements as nested if/else.

tests/co19/co19-dart2js.status

Index: tests/co19/co19-dart2js.status
diff --git a/tests/co19/co19-dart2js.status b/tests/co19/co19-dart2js.status
index 7f1d33a1fb67e5e88869c40f50d4b9d34ecba9ac..1df5000513e2ddd9596d0256b8a29e44564a8f44 100644
--- a/tests/co19/co19-dart2js.status
+++ b/tests/co19/co19-dart2js.status
@@ -9611,7 +9611,6 @@ WebPlatformTest/webstorage/storage_local_setitem_t01: RuntimeError # Please tria
 WebPlatformTest/webstorage/storage_session_setitem_t01: RuntimeError # Please triage this failure
 
 [ $compiler == dart2js && $cps_ir ]
-Language/03_Overview/1_Scoping_A02_t19: Crash # (switch (1){case 1:var x;break;case 2:var x;break;}): Unhandled node
 Language/12_Expressions/12_Instance_Creation/1_New_A06_t12: RuntimeError # Please triage this failure.
 Language/12_Expressions/13_Property_Extraction_A03_t01: RuntimeError # Cannot read property 'call' of undefined
 Language/12_Expressions/13_Property_Extraction_A03_t02: RuntimeError # Cannot read property 'call' of undefined
@@ -9620,23 +9619,6 @@ Language/12_Expressions/15_Method_Invocation/4_Super_Invocation_A01_t01: Runtime
 Language/12_Expressions/22_Equality_A03_t01: RuntimeError # Please triage this failure.
 Language/12_Expressions/30_Identifier_Reference_A09_t03: Crash # (i=0): For-loop variable captured in loop header
 Language/13_Statements/06_For_A01_t07: Crash # unsupported operation on erroneous element
-Language/13_Statements/09_Switch_A01_t01: Crash # (switch (1){case 0:case 1:}): Unhandled node
-Language/13_Statements/09_Switch_A01_t02: Crash # (switch (1){l1:l2:l3:case (1):}): Unhandled node
-Language/13_Statements/09_Switch_A01_t03: Crash # (switch (value){case...  Unhandled node
-Language/13_Statements/09_Switch_A01_t19: Crash # (switch (1){case 0:break;label:print("hello");}): Unhandled node
-Language/13_Statements/09_Switch_A02_t03: Crash # (switch (null){case null:}): Unhandled node
-Language/13_Statements/09_Switch_A05_t01: Crash # (switch ('abc'){case 1:break;}): Unhandled node
-Language/13_Statements/09_Switch_A05_t02: Crash # (switch (p){default:return 1;}): Unhandled node
-Language/13_Statements/09_Switch_A06_t01: Crash # (switch (p){case 1:var x=2;return x;case 2:var x=4;return x;}): Unhandled node
-Language/13_Statements/09_Switch_A06_t02: Crash # (switch (2){case 1:var x=2;break;case 2:x++ ;}): Unhandled node
-Language/13_Statements/09_Switch_A07_t01: Crash # (switch (value){case...  Unhandled node
-Language/13_Statements/09_Switch_A07_t02: Crash # (switch (value){case...  Unhandled node
-Language/13_Statements/09_Switch_A08_t01: Crash # (switch (value){case...  Unhandled node
-Language/13_Statements/09_Switch_A08_t02: Crash # (switch (value){case 1:case 2:result=1;case 3:case 4:result=2;break;case 5:case 6:}): Unhandled node
-Language/13_Statements/09_Switch_A09_t01: Crash # (switch (false){case 0:case 1:}): Unhandled node
-Language/13_Statements/09_Switch_A10_t01: Crash # (switch (1){case 0:false;case 1:true;break;}): Unhandled node
-Language/13_Statements/09_Switch_A10_t02: Crash # (switch (1){case 0:false;break;case 1:true;}): Unhandled node
-Language/13_Statements/09_Switch_A10_t03: Crash # (switch (1){case 0:false;break;default:true;}): Unhandled node
 Language/13_Statements/11_Return_A02_t02: Crash # (try {return 1;}finally {flag=true;}): try/finally
 Language/13_Statements/11_Return_A02_t03: Crash # (try {return 1;}finally {return 2;}): try/finally
 Language/13_Statements/11_Try_A01_t01: Crash # (try {throw "";}on int catch (ok){}catch (ok){}finally {}): try/finally
@@ -9649,14 +9631,11 @@ Language/13_Statements/11_Try_A11_t02: Crash # (try {throw exStr;}o...  try/fina
 Language/13_Statements/11_Try_A11_t03: Crash # (try {throw 42;}finally {return true;}): try/finally
 Language/13_Statements/11_Try_A11_t04: Crash # (try {throw 42;}finally {throw true;}): try/finally
 Language/13_Statements/11_Try_A12_t01: Crash # (try {append(1);f();...  try/finally
-Language/13_Statements/12_Labels_A01_t01: Crash # (switch (1){K:case 2:L:case 1:break;case 0:M:default:N:var x=0;}): Unhandled node
 Language/13_Statements/12_Labels_A03_t04: Crash # (switch (i){L:case 0:flag=true;break;case 2:continue L;}): Unhandled node
-Language/13_Statements/12_Labels_A03_t06: Crash # (switch (1){Label:case 1:break;default:break;}): Unhandled node
 Language/13_Statements/13_Break_A03_t01: Crash # (try {try {try {M:do...  try/finally
 Language/13_Statements/13_Break_A03_t02: Crash # (try {throw 1;}on in...  try/finally
 Language/13_Statements/13_Break_A03_t03: Crash # (try {try {L:try {th...  try/finally
 Language/13_Statements/13_Break_A03_t04: Crash # (try {for(int i in [...  try/finally
-Language/13_Statements/13_Break_A03_t05: Crash # (switch (1){case 0:break;case 1:break L;}): Unhandled node
 Language/13_Statements/13_Break_A03_t06: Crash # (try {do{M:for(int i...  try/finally
 Language/13_Statements/13_Break_A03_t07: Crash # (switch (1){case 1:c...  Unhandled node
 Language/13_Statements/13_Break_A03_t08: Crash # (try {try {break;}finally {order.add(2);}}finally {order.add(1);}): try/finally
@@ -9670,36 +9649,22 @@ Language/13_Statements/14_Continue_A03_t04: Crash # (try {try {continue;...  try
 Language/13_Statements/14_Continue_A03_t05: Crash # (switch (1){case 1:c...  Unhandled node
 Language/13_Statements/14_Continue_A03_t06: Crash # (try {throw 1;}on in...  try/finally
 Language/13_Statements/14_Continue_A03_t07: Crash # (try {throw 1;}on in...  try/finally
-LayoutTests/fast/backgrounds/multiple-backgrounds-computed-style_t01: Crash # (switch (property){c...  Unhandled node
 LayoutTests/fast/canvas/canvas-composite-image_t01: Crash, Pass # Stack Overflow (sometimes)
 LayoutTests/fast/canvas/canvas-composite-canvas_t01: Crash, Pass # Stack Overflow (sometimes)
 LayoutTests/fast/canvas/webgl/compressed-tex-image_t01: Crash # Invalid argument(s)
 LayoutTests/fast/canvas/webgl/framebuffer-object-attachment_t01: Crash # Invalid argument(s)
-LayoutTests/fast/canvas/webgl/gl-uniformmatrix4fv_t01: Crash # (switch (ii){case 2:...  Unhandled node
-LayoutTests/fast/canvas/webgl/index-validation_t01: Crash # (switch (type){case ...  Unhandled node
-LayoutTests/fast/canvas/webgl/oes-element-index-uint_t01: Crash # (switch (type){case ...  Unhandled node
-LayoutTests/fast/canvas/webgl/read-pixels-pack-alignment_t01: Crash # (switch (type){case ...  Unhandled node
-LayoutTests/fast/canvas/webgl/tex-image-and-sub-image-2d-with-array-buffer-view_t01: Crash # (switch (type){case ...  Unhandled node
-LayoutTests/fast/dom/location-hash_t01: Crash # (switch (state){case...  Unhandled node
 LayoutTests/fast/events/event-attributes-after-exception_t01: Crash # (try {document.body....  try/finally
-LayoutTests/fast/files/file-reader-methods-illegal-arguments_t01: Crash # (switch (name){case ...  Unhandled node
-LayoutTests/fast/loader/hashchange-event-properties_t01: Crash # (switch (hashOf(even...  Unhandled node
 LayoutTests/fast/svg/tabindex-focus_t01: Crash # (try {element.setAtt...  try/finally
 LayoutTests/fast/svg/whitespace-angle_t01: Crash # (try {target.setAttr...  try/finally
 LayoutTests/fast/svg/whitespace-integer_t01: Crash # (try {target.setAttr...  try/finally
 LayoutTests/fast/svg/whitespace-length-invalid_t01: Crash # (try {target.setAttr...  try/finally
 LayoutTests/fast/svg/whitespace-length_t01: Crash # (try {target.setAttr...  try/finally
 LayoutTests/fast/svg/whitespace-number_t01: Crash # (try {target.setAttr...  try/finally
-LayoutTests/fast/table/hittest-tablecell-bottom-edge_t01: Crash # (switch (orgElement)...  Unhandled node
-LayoutTests/fast/table/hittest-tablecell-right-edge_t01: Crash # (switch (orgElement)...  Unhandled node
-LayoutTests/fast/table/hittest-tablecell-with-borders-bottom-edge_t01: Crash # (switch (orgElement)...  Unhandled node
-LayoutTests/fast/table/hittest-tablecell-with-borders-right-edge_t01: Crash # (switch (orgElement)...  Unhandled node
 LibTest/async/DeferredLibrary/DeferredLibrary_A01_t01: RuntimeError # E.loadLibrary is not a function
 LibTest/async/Stream/Stream.periodic_A01_t01: Crash # Invalid argument(s)
 LibTest/async/Stream/drain_A02_t01: Crash # Invalid argument(s)
 LibTest/collection/ListBase/ListBase_class_A01_t02: Crash # Stack Overflow
 LibTest/collection/ListMixin/ListMixin_class_A01_t02: Crash # Stack Overflow
-LibTest/core/FallThroughError/toString_A01_t02: Crash # (switch (2){case 1:p...  Unhandled node
 LibTest/core/Invocation/isAccessor_A01_t01: Crash # Class 'PartialMethodElement' has no instance getter 'initializer'.
 LibTest/core/Invocation/isGetter_A01_t01: RuntimeError # Please triage this failure.
 LibTest/core/Invocation/isGetter_A01_t02: RuntimeError # Please triage this failure.
@@ -9710,32 +9675,14 @@ LibTest/core/Invocation/memberName_A01_t01: Crash # Class 'PartialMethodElement'
 LibTest/core/Invocation/positionalArguments_A01_t01: RuntimeError # Please triage this failure.
 LibTest/core/List/List_class_A01_t02: Crash # Stack Overflow
 LibTest/core/RegExp/Pattern_semantics/firstMatch_CharacterClassEscape_A03_t01: Crash # (switch (alpha){case...  Unhandled node
-LibTest/core/RegExp/Pattern_semantics/splitQueryString_A02_t01: Crash # (switch (alpha){case...  Unhandled node
 LibTest/core/Set/add_A01_t03: RuntimeError # receiver.get$x is not a function
 LibTest/core/Symbol/Symbol_A01_t03: RuntimeError # Please triage this failure.
 LibTest/core/Symbol/Symbol_A01_t05: RuntimeError # Please triage this failure.
 LibTest/core/double/INFINITY_A01_t04: Pass # Please triage this failure.
 LibTest/core/double/NEGATIVE_INFINITY_A01_t04: Pass # Please triage this failure.
-LibTest/html/HttpRequest/abort_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/getAllResponseHeaders_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/getResponseHeader_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/onLoad_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/overrideMimeType_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/readyStateChangeEvent_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequest/setRequestHeader_A01_t01: Crash # (switch (request.rea...  Unhandled node
-LibTest/html/HttpRequestUpload/onLoad_A01_t01: Crash # (switch (request.rea...  Unhandled node
 LibTest/html/Window/moveBy_A01_t01: Crash # (try {check(nw,0,0);...  try/finally
 LibTest/html/Window/moveTo_A01_t01: Crash # (try {check(nw,0,0);...  try/finally
 LibTest/html/Window/moveTo_A02_t01: Crash # (try {print("from ${...  try/finally
 LibTest/html/Window/resizeBy_A01_t01: Crash # (try {check(nw,0,0);...  try/finally
 LibTest/html/Window/resizeTo_A01_t01: Crash # (try {check(nw,0,0);...  try/finally
 LibTest/isolate/ReceivePort/drain_A02_t01: Crash # Invalid argument(s)
-WebPlatformTest/custom-elements/instantiating/createElementNS_A02_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/createElementNS_A03_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/createElementNS_A04_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/createElement_A02_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/createElement_A03_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/createElement_A04_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/isAttribute_A01_t01: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/custom-elements/instantiating/isAttribute_A01_t02: Crash # (switch (name){case ...  Unhandled node
-WebPlatformTest/html/semantics/forms/the-input-element/valueMode_t01: Crash # (switch (types[i][mo...  Unhandled node