[Clang] Remove support for legacy pass manager

This removes the -flegacy-pass-manager and
-fno-experimental-new-pass-manager options, and the corresponding
support code in BackendUtil. The -fno-legacy-pass-manager and
-fexperimental-new-pass-manager options are retained as no-ops.

Differential Revision: https://reviews.llvm.org/D123609

1 files changed, 0 insertions, 9 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 87e613a..369295d 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -543,11 +543,6 @@ static bool FixupInvocation(CompilerInvocation &Invocation,
           << A->getSpelling() << T.getTriple();
   }
 
-  if (!CodeGenOpts.ProfileRemappingFile.empty() && CodeGenOpts.LegacyPassManager)
-    Diags.Report(diag::err_drv_argument_only_allowed_with)
-        << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args)
-        << "-fno-legacy-pass-manager";
-
   return Diags.getNumErrors() == NumErrorsBefore;
 }
 
@@ -1731,10 +1726,6 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
 
     // -ftime-report= is only for new pass manager.
     if (A->getOption().getID() == OPT_ftime_report_EQ) {
-      if (Opts.LegacyPassManager)
-        Diags.Report(diag::err_drv_argument_only_allowed_with)
-            << A->getAsString(Args) << "-fno-legacy-pass-manager";
-
       StringRef Val = A->getValue();
       if (Val == "per-pass")
         Opts.TimePassesPerRun = false;