Merge pull request #42113 from slavapestov/gsb-off

Turn off the GenericSignatureBuilder

Author: slavapestov

include/swift/Basic/LangOptions.h

@@ -528,7 +528,7 @@ namespace swift {
     /// Enable the new experimental protocol requirement signature minimization
     /// algorithm.
     RequirementMachineMode RequirementMachineProtocolSignatures =
-        RequirementMachineMode::Verify;
+        RequirementMachineMode::Enabled;
 
     /// Enable the new experimental generic signature minimization algorithm
     /// for abstract generic signatures.
@@ -538,7 +538,7 @@ namespace swift {
     /// Enable the new experimental generic signature minimization algorithm
     /// for user-written generic signatures.
     RequirementMachineMode RequirementMachineInferredSignatures =
-        RequirementMachineMode::Verify;
+        RequirementMachineMode::Enabled;
 
     /// Enable preprocessing pass to eliminate conformance requirements
     /// on generic parameters which are made concrete. Usually you want this

stdlib/cmake/modules/SwiftSource.cmake

@@ -473,11 +473,6 @@ function(_compile_swift_files
     endif()
   endif()
 
-  # The standard library and overlays are built with the Requirement Machine enabled.
-  if(SWIFTFILE_IS_STDLIB)
-    list(APPEND swift_flags "-Xfrontend" "-requirement-machine-inferred-signatures=verify")
-  endif()
-
   # The standard library and overlays are built resiliently when SWIFT_STDLIB_STABLE_ABI=On.
   if(SWIFTFILE_IS_STDLIB AND SWIFT_STDLIB_STABLE_ABI)
     list(APPEND swift_flags "-enable-library-evolution")