From 6e114a367f97c3388240746ca506b1e34416a71d Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 15 Jul 2011 16:40:04 -0700
Subject: [PATCH] rustc: Write names of local variables into the LLVM IR when
 debug mode is on

---
 src/comp/middle/trans.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/comp/middle/trans.rs b/src/comp/middle/trans.rs
index 02a85383e353..2493569567da 100644
--- a/src/comp/middle/trans.rs
+++ b/src/comp/middle/trans.rs
@@ -6743,6 +6743,9 @@ fn alloc_ty(&@block_ctxt cx, &ty::t t) -> result {
 fn alloc_local(&@block_ctxt cx, &@ast::local local) -> result {
     auto t = node_id_type(cx.fcx.lcx.ccx, local.node.id);
     auto r = alloc_ty(cx, t);
+    if (cx.fcx.lcx.ccx.sess.get_opts().debuginfo) {
+        llvm::LLVMSetValueName(r.val, str::buf(local.node.ident));
+    }
     r.bcx.fcx.lllocals.insert(local.node.id, r.val);
     ret r;
 }