Rollup merge of #47220 - nagisa:nonamellvm, r=rkruppe

Use name-discarding LLVM context

This is only applicable when neither of --emit=llvm-ir or --emit=llvm-bc are not
requested.

In case either of these outputs are wanted, but the benefits of such context are
desired as well, -Zfewer_names option provides the same functionality regardless
of the outputs requested.

Should be a viable fix for https://github.com/rust-lang/rust/issues/46449

1 files changed, 7 insertions, 1 deletions

diff --git a/src/rustllvm/RustWrapper.cpp b/src/rustllvm/RustWrapper.cpp
index 96fb05ee06e..0fac7f7bf28 100644
--- a/src/rustllvm/RustWrapper.cpp
+++ b/src/rustllvm/RustWrapper.cpp
@@ -76,11 +76,17 @@ extern "C" char *LLVMRustGetLastError(void) {
   return Ret;
 }
 
-void LLVMRustSetLastError(const char *Err) {
+extern "C" void LLVMRustSetLastError(const char *Err) {
   free((void *)LastError);
   LastError = strdup(Err);
 }
 
+extern "C" LLVMContextRef LLVMRustContextCreate(bool shouldDiscardNames) {
+  auto ctx = new LLVMContext();
+  ctx->setDiscardValueNames(shouldDiscardNames);
+  return wrap(ctx);
+}
+
 extern "C" void LLVMRustSetNormalizedTarget(LLVMModuleRef M,
                                             const char *Triple) {
   unwrap(M)->setTargetTriple(Triple::normalize(Triple));