Only enable hotness information when PGO is available

2 files changed, 3 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs
index 46e6daed21f..6134d8fc174 100644
--- a/compiler/rustc_codegen_llvm/src/back/write.rs
+++ b/compiler/rustc_codegen_llvm/src/back/write.rs
@@ -320,6 +320,7 @@ impl<'a> DiagnosticHandlers<'a> {
             })
             .and_then(|dir| dir.to_str().and_then(|p| CString::new(p).ok()));
 
+        let pgo_available = cgcx.opts.cg.profile_use.is_some();
         let data = Box::into_raw(Box::new((cgcx, handler)));
         unsafe {
             let old_handler = llvm::LLVMRustContextGetDiagnosticHandler(llcx);
@@ -333,6 +334,7 @@ impl<'a> DiagnosticHandlers<'a> {
                 // The `as_ref()` is important here, otherwise the `CString` will be dropped
                 // too soon!
                 remark_file.as_ref().map(|dir| dir.as_ptr()).unwrap_or(std::ptr::null()),
+                pgo_available,
             );
             DiagnosticHandlers { data, llcx, old_handler }
         }
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index b167facfb02..7fb4d3227db 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -2332,6 +2332,7 @@ extern "C" {
         remark_passes: *const *const c_char,
         remark_passes_len: usize,
         remark_file: *const c_char,
+        pgo_available: bool,
     );
 
     #[allow(improper_ctypes)]