Add -C remark for LLVM optimization remarks

Fixes #17116.

1 files changed, 48 insertions, 0 deletions

diff --git a/src/rustllvm/RustWrapper.cpp b/src/rustllvm/RustWrapper.cpp
index 5893b582cd8..7896ce2ba76 100644
--- a/src/rustllvm/RustWrapper.cpp
+++ b/src/rustllvm/RustWrapper.cpp
@@ -11,6 +11,8 @@
 #include "rustllvm.h"
 #include "llvm/Object/Archive.h"
 #include "llvm/Object/ObjectFile.h"
+#include "llvm/IR/DiagnosticInfo.h"
+#include "llvm/IR/DiagnosticPrinter.h"
 
 #if LLVM_VERSION_MINOR >= 5
 #include "llvm/IR/CallSite.h"
@@ -823,3 +825,49 @@ extern "C" LLVMTypeRef
 LLVMRustArrayType(LLVMTypeRef ElementType, uint64_t ElementCount) {
     return wrap(ArrayType::get(unwrap(ElementType), ElementCount));
 }
+
+DEFINE_SIMPLE_CONVERSION_FUNCTIONS(Twine, LLVMTwineRef)
+DEFINE_SIMPLE_CONVERSION_FUNCTIONS(DebugLoc, LLVMDebugLocRef)
+
+extern "C" void
+LLVMWriteTwineToString(LLVMTwineRef T, RustStringRef str) {
+    raw_rust_string_ostream os(str);
+    unwrap(T)->print(os);
+}
+
+extern "C" void
+LLVMUnpackOptimizationDiagnostic(
+    LLVMDiagnosticInfoRef di,
+    const char **pass_name_out,
+    LLVMValueRef *function_out,
+    LLVMDebugLocRef *debugloc_out,
+    LLVMTwineRef *message_out)
+{
+    // Undefined to call this not on an optimization diagnostic!
+    llvm::DiagnosticInfoOptimizationBase *opt
+        = static_cast<llvm::DiagnosticInfoOptimizationBase*>(unwrap(di));
+
+    *pass_name_out = opt->getPassName();
+    *function_out = wrap(&opt->getFunction());
+    *debugloc_out = wrap(&opt->getDebugLoc());
+    *message_out = wrap(&opt->getMsg());
+}
+
+extern "C" void LLVMWriteDiagnosticInfoToString(LLVMDiagnosticInfoRef di, RustStringRef str) {
+    raw_rust_string_ostream os(str);
+    DiagnosticPrinterRawOStream dp(os);
+    unwrap(di)->print(dp);
+}
+
+extern "C" int LLVMGetDiagInfoKind(LLVMDiagnosticInfoRef di) {
+    return unwrap(di)->getKind();
+}
+
+extern "C" void LLVMWriteDebugLocToString(
+    LLVMContextRef C,
+    LLVMDebugLocRef dl,
+    RustStringRef str)
+{
+    raw_rust_string_ostream os(str);
+    unwrap(dl)->print(*unwrap(C), os);
+}