Delete CPS IR

pkg/compiler/lib/src/options.dart

Index: pkg/compiler/lib/src/options.dart
diff --git a/pkg/compiler/lib/src/options.dart b/pkg/compiler/lib/src/options.dart
index 1f31f347b02d3a0fbaabc36ca4cd8833b7498308..1ee1bd4393e602140858c8d478d62184fd28141e 100644
--- a/pkg/compiler/lib/src/options.dart
+++ b/pkg/compiler/lib/src/options.dart
@@ -218,9 +218,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
   /// Whether to generate code compliant with content security policy (CSP).
   final bool useContentSecurityPolicy;
 
-  /// Use the experimental CPS based backend.
-  final bool useCpsIr;
-
   /// When obfuscating for minification, whether to use the frequency of a name
   /// as an heuristic to pick shorter names.
   final bool useFrequencyNamer;
@@ -318,7 +315,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
         trustTypeAnnotations: _hasOption(options, Flags.trustTypeAnnotations),
         useContentSecurityPolicy:
             _hasOption(options, Flags.useContentSecurityPolicy),
-        useCpsIr: _hasOption(options, Flags.useCpsIr),
         useFrequencyNamer:
             !_hasOption(options, Flags.noFrequencyBasedMinification),
         useNewSourceInfo: _hasOption(options, Flags.useNewSourceInfo),
@@ -379,7 +375,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
       bool trustPrimitives: false,
       bool trustTypeAnnotations: false,
       bool useContentSecurityPolicy: false,
-      bool useCpsIr: false,
       bool useFrequencyNamer: true,
       bool useNewSourceInfo: false,
       bool useStartupEmitter: false,
@@ -452,7 +447,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
         trustPrimitives: trustPrimitives,
         trustTypeAnnotations: trustTypeAnnotations,
         useContentSecurityPolicy: useContentSecurityPolicy,
-        useCpsIr: useCpsIr,
         useFrequencyNamer: useFrequencyNamer,
         useNewSourceInfo: useNewSourceInfo,
         useStartupEmitter: useStartupEmitter,
@@ -502,7 +496,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
       this.trustPrimitives: false,
       this.trustTypeAnnotations: false,
       this.useContentSecurityPolicy: false,
-      this.useCpsIr: false,
       this.useFrequencyNamer: false,
       this.useNewSourceInfo: false,
       this.useStartupEmitter: false,
@@ -559,7 +552,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
       trustPrimitives,
       trustTypeAnnotations,
       useContentSecurityPolicy,
-      useCpsIr,
       useFrequencyNamer,
       useNewSourceInfo,
       useStartupEmitter,
@@ -628,7 +620,6 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
             trustTypeAnnotations ?? options.trustTypeAnnotations,
         useContentSecurityPolicy:
             useContentSecurityPolicy ?? options.useContentSecurityPolicy,
-        useCpsIr: useCpsIr ?? options.useCpsIr,
         useFrequencyNamer: useFrequencyNamer ?? options.useFrequencyNamer,
         useNewSourceInfo: useNewSourceInfo ?? options.useNewSourceInfo,
         useStartupEmitter: useStartupEmitter ?? options.useStartupEmitter,