From 162651eed9b741d354ef0df44243e96e3b0c08f9 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Wed, 23 Aug 2017 22:43:29 +0800
Subject: MIR Optimise - TODO: Reduce cost

---
 src/mir/optimise.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/mir/optimise.cpp b/src/mir/optimise.cpp
index 73cbaa04..973aa49f 100644
--- a/src/mir/optimise.cpp
+++ b/src/mir/optimise.cpp
@@ -567,6 +567,7 @@ void MIR_Optimise(const StaticTraitResolve& resolve, const ::HIR::ItemPath& path
 
         // >> Unify duplicate temporaries
         // If two temporaries don't overlap in lifetime (blocks in which they're valid), unify the two
+        // TODO: Only run this when nothing else happened. (It's VERY expensive)
         change_happened |= MIR_Optimise_UnifyTemporaries(state, fcn);
         #if CHECK_AFTER_ALL
         MIR_Validate(resolve, path, fcn, args, ret_type);
-- 
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