From 1361fdc58cf7aa6e7196a0ef66e387812db930a5 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Wed, 24 Jul 2024 20:55:43 +0200
Subject: [PATCH] nontemporal_store: make sure that the intrinsic is truly just
 a hint

---
 src/builder.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/builder.rs b/src/builder.rs
index a64371a3d89..47b378cc1cd 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -1127,6 +1127,8 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
         self.llbb().add_assignment(self.location, aligned_destination, val);
         // TODO(antoyo): handle align and flags.
         // NOTE: dummy value here since it's never used. FIXME(antoyo): API should not return a value here?
+        // When adding support for NONTEMPORAL, make sure to not just emit MOVNT on x86; see the
+        // LLVM backend for details.
         self.cx.context.new_rvalue_zero(self.type_i32())
     }