[clang] Delay checking of `-fopenmp-host-ir-file-path` (#150124)

This PR is part of an effort to remove file system usage from the
command line parsing code. The reason for that is that it's impossible
to do file system access correctly without a configured VFS, and the VFS
can only be configured after the command line is parsed. I don't want to
intertwine command line parsing and VFS configuration, so I decided to
perform the file system access after the command line is parsed and the
VFS is configured - ideally right before the file system entity is used
for the first time.

This patch delays opening the OpenMP host IR file until codegen.

1 files changed, 0 insertions, 12 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index f8fecba..8411d00 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -3919,9 +3919,6 @@ void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
     GenerateArg(Consumer, OPT_offload_targets_EQ, Targets);
   }
 
-  if (!Opts.OMPHostIRFile.empty())
-    GenerateArg(Consumer, OPT_fopenmp_host_ir_file_path, Opts.OMPHostIRFile);
-
   if (Opts.OpenMPCUDAMode)
     GenerateArg(Consumer, OPT_fopenmp_cuda_mode);
 
@@ -4388,15 +4385,6 @@ bool CompilerInvocation::ParseLangArgs(LangOptions &Opts, ArgList &Args,
     }
   }
 
-  // Get OpenMP host file path if any and report if a non existent file is
-  // found
-  if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
-    Opts.OMPHostIRFile = A->getValue();
-    if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
-      Diags.Report(diag::err_drv_omp_host_ir_file_not_found)
-          << Opts.OMPHostIRFile;
-  }
-
   // Set CUDA mode for OpenMP target NVPTX/AMDGCN if specified in options
   Opts.OpenMPCUDAMode = Opts.OpenMPIsTargetDevice &&
                         (T.isNVPTX() || T.isAMDGCN()) &&