From b21dc601d5ad8fa09b35b80fe421fb8fa09584fd Mon Sep 17 00:00:00 2001
From: Lukas Stadler <lukas.stadler@oracle.com>
Date: Wed, 16 Nov 2016 15:05:40 +0100
Subject: [PATCH] =?UTF-8?q?use=20=E2=80=9CpreviousLookups=E2=80=9D=20to=20?=
=?UTF-8?q?speed=20up=20FrameSlotChangeMonitor.invalidateAllNames?=
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---
.../r/runtime/env/frame/FrameSlotChangeMonitor.java | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/env/frame/FrameSlotChangeMonitor.java b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/env/frame/FrameSlotChangeMonitor.java
index c616637b9d..8455c58c0c 100644
--- a/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/env/frame/FrameSlotChangeMonitor.java
+++ b/com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/env/frame/FrameSlotChangeMonitor.java
@@ -391,9 +391,11 @@ public final class FrameSlotChangeMonitor {
}
}
target.lookupResults.clear();
- target.previousLookups.clear();
- for (FrameDescriptor sub : target.subDescriptors) {
- invalidateAllNames(getMetaData(sub));
+ if (!target.previousLookups.isEmpty()) {
+ target.previousLookups.clear();
+ for (FrameDescriptor sub : target.subDescriptors) {
+ invalidateAllNames(getMetaData(sub));
+ }
}
}
--
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