2 files changed, 97 insertions, 1 deletions

diff --git a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
index 71f21dc6666..38fddbdba54 100644
--- a/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
@@ -107,6 +107,7 @@ static LLVMRustPassKind toRust(PassKind Kind) {
 }
 
 extern "C" LLVMPassRef LLVMRustFindAndCreatePass(const char *PassName) {
+#if LLVM_VERSION_LT(15, 0)
   StringRef SR(PassName);
   PassRegistry *PR = PassRegistry::getPassRegistry();
 
@@ -115,36 +116,59 @@ extern "C" LLVMPassRef LLVMRustFindAndCreatePass(const char *PassName) {
     return wrap(PI->createPass());
   }
   return nullptr;
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMPassRef LLVMRustCreateAddressSanitizerFunctionPass(bool Recover) {
+#if LLVM_VERSION_LT(15, 0)
   const bool CompileKernel = false;
   const bool UseAfterScope = true;
 
   return wrap(createAddressSanitizerFunctionPass(CompileKernel, Recover, UseAfterScope));
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMPassRef LLVMRustCreateModuleAddressSanitizerPass(bool Recover) {
+#if LLVM_VERSION_LT(15, 0)
   const bool CompileKernel = false;
 
   return wrap(createModuleAddressSanitizerLegacyPassPass(CompileKernel, Recover));
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMPassRef LLVMRustCreateMemorySanitizerPass(int TrackOrigins, bool Recover) {
+#if LLVM_VERSION_LT(15, 0)
   const bool CompileKernel = false;
 
   return wrap(createMemorySanitizerLegacyPassPass(
       MemorySanitizerOptions{TrackOrigins, Recover, CompileKernel}));
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMPassRef LLVMRustCreateThreadSanitizerPass() {
+#if LLVM_VERSION_LT(15, 0)
   return wrap(createThreadSanitizerLegacyPassPass());
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMPassRef LLVMRustCreateHWAddressSanitizerPass(bool Recover) {
+#if LLVM_VERSION_LT(15, 0)
   const bool CompileKernel = false;
 
   return wrap(createHWAddressSanitizerLegacyPassPass(CompileKernel, Recover));
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C" LLVMRustPassKind LLVMRustPassKind(LLVMPassRef RustPass) {
@@ -154,10 +178,57 @@ extern "C" LLVMRustPassKind LLVMRustPassKind(LLVMPassRef RustPass) {
 }
 
 extern "C" void LLVMRustAddPass(LLVMPassManagerRef PMR, LLVMPassRef RustPass) {
+#if LLVM_VERSION_LT(15, 0)
   assert(RustPass);
   Pass *Pass = unwrap(RustPass);
   PassManagerBase *PMB = unwrap(PMR);
   PMB->add(Pass);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" LLVMPassManagerBuilderRef LLVMRustPassManagerBuilderCreate() {
+#if LLVM_VERSION_LT(15, 0)
+  return LLVMPassManagerBuilderCreate();
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" void LLVMRustPassManagerBuilderDispose(LLVMPassManagerBuilderRef PMB) {
+#if LLVM_VERSION_LT(15, 0)
+  LLVMPassManagerBuilderDispose(PMB);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" void LLVMRustPassManagerBuilderPopulateFunctionPassManager(
+  LLVMPassManagerBuilderRef PMB, LLVMPassManagerRef PM) {
+#if LLVM_VERSION_LT(15, 0)
+  LLVMPassManagerBuilderPopulateFunctionPassManager(PMB, PM);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" void LLVMRustPassManagerBuilderPopulateModulePassManager(
+  LLVMPassManagerBuilderRef PMB, LLVMPassManagerRef PM) {
+#if LLVM_VERSION_LT(15, 0)
+  LLVMPassManagerBuilderPopulateModulePassManager(PMB, PM);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" void LLVMRustPassManagerBuilderPopulateLTOPassManager(
+  LLVMPassManagerBuilderRef PMB, LLVMPassManagerRef PM, bool Internalize, bool RunInliner) {
+#if LLVM_VERSION_LT(15, 0)
+  LLVMPassManagerBuilderPopulateLTOPassManager(PMB, PM, Internalize, RunInliner);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C"
@@ -165,12 +236,26 @@ void LLVMRustPassManagerBuilderPopulateThinLTOPassManager(
   LLVMPassManagerBuilderRef PMBR,
   LLVMPassManagerRef PMR
 ) {
+#if LLVM_VERSION_LT(15, 0)
   unwrap(PMBR)->populateThinLTOPassManager(*unwrap(PMR));
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
+}
+
+extern "C" void LLVMRustPassManagerBuilderUseInlinerWithThreshold(
+  LLVMPassManagerBuilderRef PMB, unsigned Threshold) {
+#if LLVM_VERSION_LT(15, 0)
+  LLVMPassManagerBuilderUseInlinerWithThreshold(PMB, Threshold);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 extern "C"
 void LLVMRustAddLastExtensionPasses(
     LLVMPassManagerBuilderRef PMBR, LLVMPassRef *Passes, size_t NumPasses) {
+#if LLVM_VERSION_LT(15, 0)
   auto AddExtensionPasses = [Passes, NumPasses](
       const PassManagerBuilder &Builder, PassManagerBase &PM) {
     for (size_t I = 0; I < NumPasses; I++) {
@@ -183,6 +268,9 @@ void LLVMRustAddLastExtensionPasses(
                              AddExtensionPasses);
   unwrap(PMBR)->addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
                              AddExtensionPasses);
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 #ifdef LLVM_COMPONENT_X86
@@ -533,12 +621,16 @@ extern "C" void LLVMRustDisposeTargetMachine(LLVMTargetMachineRef TM) {
 extern "C" void LLVMRustConfigurePassManagerBuilder(
     LLVMPassManagerBuilderRef PMBR, LLVMRustCodeGenOptLevel OptLevel,
     bool MergeFunctions, bool SLPVectorize, bool LoopVectorize, bool PrepareForThinLTO,
-    const char* PGOGenPath, const char* PGOUsePath, const char* PGOSampleUsePath) {
+    const char* PGOGenPath, const char* PGOUsePath, const char* PGOSampleUsePath,
+    int SizeLevel) {
+#if LLVM_VERSION_LT(15, 0)
   unwrap(PMBR)->MergeFunctions = MergeFunctions;
   unwrap(PMBR)->SLPVectorize = SLPVectorize;
   unwrap(PMBR)->OptLevel = fromRust(OptLevel);
   unwrap(PMBR)->LoopVectorize = LoopVectorize;
   unwrap(PMBR)->PrepareForThinLTO = PrepareForThinLTO;
+  unwrap(PMBR)->SizeLevel = SizeLevel;
+  unwrap(PMBR)->DisableUnrollLoops = SizeLevel != 0;
 
   if (PGOGenPath) {
     assert(!PGOUsePath && !PGOSampleUsePath);
@@ -550,6 +642,9 @@ extern "C" void LLVMRustConfigurePassManagerBuilder(
   } else if (PGOSampleUsePath) {
     unwrap(PMBR)->PGOSampleUse = PGOSampleUsePath;
   }
+#else
+  report_fatal_error("Legacy PM not supported with LLVM 15");
+#endif
 }
 
 // Unfortunately, the LLVM C API doesn't provide a way to set the `LibraryInfo`
diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index 3ed4396d1e9..850b80e4280 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -6,6 +6,7 @@
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/Mangler.h"
 #include "llvm/Object/Archive.h"
 #include "llvm/Object/COFFImportFile.h"
 #include "llvm/Object/ObjectFile.h"