[llvm-driver] Fix usage of `InitLLVM` on Windows (#76306)

Previously, some tools such as `clang` or `lld` which require strict
order for certain command-line options, such as `clang -cc1` or `lld
-flavor`, would not longer work on Windows, when these tools were linked
as part of `llvm-driver`. This was caused by `InitLLVM` which was part
of the `*_main()` function of these tools, which in turn calls
`windows::GetCommandLineArguments`. That function completly replaces
argc/argv by new UTF-8 contents, so any ajustements to argc/argv made by
`llvm-driver` prior to calling these tools was reset.

`InitLLVM` is now called by the `llvm-driver`. Any tool that
participates in (or is part of) the `llvm-driver` doesn't call
`InitLLVM` anymore.

1 files changed, 0 insertions, 2 deletions

diff --git a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
index 558359e..730f423 100644
--- a/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
+++ b/llvm/tools/llvm-objcopy/llvm-objcopy.cpp
@@ -42,7 +42,6 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/LLVMDriver.h"
 #include "llvm/Support/Memory.h"
 #include "llvm/Support/Path.h"
@@ -224,7 +223,6 @@ static Error executeObjcopy(ConfigManager &ConfigMgr) {
 }
 
 int llvm_objcopy_main(int argc, char **argv, const llvm::ToolContext &) {
-  InitLLVM X(argc, argv);
   ToolName = argv[0];
 
   // Expand response files.