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-rw-r--r--lisc/test/collatz.ssa6
1 files changed, 4 insertions, 2 deletions
diff --git a/lisc/test/collatz.ssa b/lisc/test/collatz.ssa
index 9f1c7b5..419bbaf 100644
--- a/lisc/test/collatz.ssa
+++ b/lisc/test/collatz.ssa
@@ -32,13 +32,15 @@
 	%n3 =w div %n0, 2
 	jmp @cloop
 @getmemo                     # get the count for n0 in mem
-	%idx0 =l mul %n0, 4
+	%n0l =l sext %n0
+	%idx0 =l mul %n0l, 4
 	%loc0 =l add %idx0, %mem
 	%cn0 =w load %loc0
 	%c2 =w add %c0, %cn0
 @endcl                       # store the count for n in mem
 	%c =w phi @getmemo %c2, @cloop %c0
-	%idx1 =l mul %n, 4
+	%nl =l sext %n
+	%idx1 =l mul %nl, 4
 	%loc1 =l add %idx1, %mem
 	storew %c, %loc1
 	%n9 =w add 1, %n