Rollup merge of #149661 - alinas:llvm-22-runtimelibraryinfo-fix, r=cuviper

Fix for LLVM22 making lowering decisions dependent on RuntimeLibraryInfo.

LLVM added codegen decision making based on RuntimeLibraryInfo. Mirror the change in Rust's codegen.

LLVM reference commit:
llvm/llvm-project@04c81a9.

Author: matthiaskrgr

compiler/rustc_codegen_llvm/src/back/write.rs

@@ -75,7 +75,7 @@ fn write_output_file<'ll>(
     let result = unsafe {
         let pm = llvm::LLVMCreatePassManager();
         llvm::LLVMAddAnalysisPasses(target, pm);
-        llvm::LLVMRustAddLibraryInfo(pm, m, no_builtins);
+        llvm::LLVMRustAddLibraryInfo(target, pm, m, no_builtins);
         llvm::LLVMRustWriteOutputFile(
             target,
             pm,

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -2379,6 +2379,7 @@ unsafe extern "C" {
     ) -> *mut TargetMachine;
 
     pub(crate) fn LLVMRustAddLibraryInfo<'a>(
+        T: &TargetMachine,
         PM: &PassManager<'a>,
         M: &'a Module,
         DisableSimplifyLibCalls: bool,

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -6,6 +6,9 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Analysis/Lint.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
+#if LLVM_VERSION_GE(22, 0)
+#include "llvm/Analysis/RuntimeLibcallInfo.h"
+#endif
 #include "llvm/Bitcode/BitcodeWriter.h"
 #include "llvm/Bitcode/BitcodeWriterPass.h"
 #include "llvm/CodeGen/CommandFlags.h"
@@ -379,13 +382,20 @@ extern "C" LLVMTargetMachineRef LLVMRustCreateTargetMachine(
 
 // Unfortunately, the LLVM C API doesn't provide a way to create the
 // TargetLibraryInfo pass, so we use this method to do so.
-extern "C" void LLVMRustAddLibraryInfo(LLVMPassManagerRef PMR, LLVMModuleRef M,
+extern "C" void LLVMRustAddLibraryInfo(LLVMTargetMachineRef T,
+                                       LLVMPassManagerRef PMR, LLVMModuleRef M,
                                        bool DisableSimplifyLibCalls) {
   auto TargetTriple = Triple(unwrap(M)->getTargetTriple());
+  TargetOptions *Options = &unwrap(T)->Options;
   auto TLII = TargetLibraryInfoImpl(TargetTriple);
   if (DisableSimplifyLibCalls)
     TLII.disableAllFunctions();
   unwrap(PMR)->add(new TargetLibraryInfoWrapperPass(TLII));
+#if LLVM_VERSION_GE(22, 0)
+  unwrap(PMR)->add(new RuntimeLibraryInfoWrapper(
+      TargetTriple, Options->ExceptionModel, Options->FloatABIType,
+      Options->EABIVersion, Options->MCOptions.ABIName, Options->VecLib));
+#endif
 }
 
 extern "C" void LLVMRustSetLLVMOptions(int Argc, char **Argv) {