[LLVM22] fix removed llvm::vfs::getRealFileSystem() from PGOOptions (#5019)

llvm/llvm-project#160188

Author: thewilsonator

gen/optimizer.cpp

@@ -364,7 +364,10 @@ static llvm::Optional<PGOOptions> getPGOOptions() {
     return PGOOptions(
         global.params.datafileInstrProf, "", "",
 #if LDC_LLVM_VER >= 1700
-        "" /*MemoryProfileUsePath*/, llvm::vfs::getRealFileSystem(),
+        "" /*MemoryProfileUsePath*/,
+#if LDC_LLVM_VER < 2200
+        llvm::vfs::getRealFileSystem(),
+#endif
 #endif
         PGOOptions::PGOAction::IRInstr, PGOOptions::CSPGOAction::NoCSAction,
 #if LDC_LLVM_VER >= 1900
@@ -375,7 +378,10 @@ static llvm::Optional<PGOOptions> getPGOOptions() {
     return PGOOptions(
         global.params.datafileInstrProf, "", "",
 #if LDC_LLVM_VER >= 1700
-        "" /*MemoryProfileUsePath*/, llvm::vfs::getRealFileSystem(),
+        "" /*MemoryProfileUsePath*/,
+#if LDC_LLVM_VER < 2200
+        llvm::vfs::getRealFileSystem(),
+#endif
 #endif
         PGOOptions::PGOAction::IRUse, PGOOptions::CSPGOAction::NoCSAction,
 #if LDC_LLVM_VER >= 1900
@@ -386,7 +392,10 @@ static llvm::Optional<PGOOptions> getPGOOptions() {
     return PGOOptions(
         global.params.datafileInstrProf, "", "",
 #if LDC_LLVM_VER >= 1700
-        "" /*MemoryProfileUsePath*/, llvm::vfs::getRealFileSystem(),
+        "" /*MemoryProfileUsePath*/,
+#if LDC_LLVM_VER < 2200
+        llvm::vfs::getRealFileSystem(),
+#endif
 #endif
         PGOOptions::PGOAction::SampleUse, PGOOptions::CSPGOAction::NoCSAction,
 #if LDC_LLVM_VER >= 1900