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changeset 22335:68052000a7e0

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LinearScanWalker: allow usage at position 0.
author Josef Eisl <josef.eisl@jku.at>
date Tue, 21 Jul 2015 10:03:24 +0200
parents ac7992eb97c8
children 68006fee3a2e
files graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanWalker.java
diffstat 1 files changed, 1 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanWalker.java	Thu Jul 16 17:19:46 2015 +0200
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanWalker.java	Tue Jul 21 10:03:24 2015 +0200
@@ -785,7 +785,7 @@
             int firstShouldHaveUsage = interval.firstUsage(RegisterPriority.ShouldHaveRegister);
             int regNeededUntil = Math.min(firstUsage, interval.from() + 1);
             int intervalTo = interval.to();
-            assert regNeededUntil > 0 && regNeededUntil < Integer.MAX_VALUE : "interval has no use";
+            assert regNeededUntil >= 0 && regNeededUntil < Integer.MAX_VALUE : "interval has no use";
 
             Register reg;
             Register ignore;