From: David Given <dg@cowlark.com>
Date: Fri, 13 Jan 2017 22:08:25 +0000 (+0100)
Subject: Typo fix so that liveness is now calculated correctly again; remember to reset
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=51c5459ee8e6a775cf159b45ca5c3703a9f564a1;p=ack.git

Typo fix so that liveness is now calculated correctly again; remember to reset
the storage set on exit so we don't end up with bogus pointers after the heap
is freed.
---

diff --git a/mach/proto/mcg/pass_livevalueanalysis.c b/mach/proto/mcg/pass_livevalueanalysis.c
index 4e83880fd..2b20cc18c 100644
--- a/mach/proto/mcg/pass_livevalueanalysis.c
+++ b/mach/proto/mcg/pass_livevalueanalysis.c
@@ -53,7 +53,7 @@ static void propagate_liveness(struct basicblock* bb)
                 struct valueusage* usage = hit.value;
 
                 if (usage->input)
-                    set_remove(&known_live, value);
+                    set_add(&known_live, value);
             }
         }
 	}
@@ -65,6 +65,7 @@ void pass_live_value_analysis(void)
 
     for (i=0; i<dominance.postorder.count; i++)
         propagate_liveness(dominance.postorder.item[i]);
+    set_reset(&known_live);
 }
 
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