# HG changeset patch
# User Josef Eisl <josef.eisl@jku.at>
# Date 1437465804 -7200
# Node ID 68052000a7e041f464409c55522c0d0931057051
# Parent  ac7992eb97c837396d4432d8fc5ae38c0eab25c8
LinearScanWalker: allow usage at position 0.

diff -r ac7992eb97c8 -r 68052000a7e0 graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/LinearScanWalker.java
--- 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;