--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gfortran.dg/pr68379-2.f	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,24 @@
+! { dg-do compile }
+! { dg-additional-options "-Ofast" }
+! { dg-additional-options "-mavx" { target x86_64-*-* i?86-*-* } }
+
+      SUBROUTINE PASSB4 (IDO,L1,CC,CH,WA1,WA2,WA3)
+      IMPLICIT REAL(4) (A-H, O-Z)
+      DIMENSION CC(IDO,4,L1), CH(IDO,L1,4), WA1(*), WA2(*), WA3(*)
+  102 DO 104 K=1,L1
+         DO 103 I=2,IDO,2
+            TI1 = CC(I,1,K)-CC(I,3,K)
+            TI2 = CC(I,1,K)+CC(I,3,K)
+            TI3 = CC(I,2,K)+CC(I,4,K)
+            TR2 = CC(I-1,1,K)+CC(I-1,3,K)
+            TI4 = CC(I-1,2,K)-CC(I-1,4,K)
+            TR3 = CC(I-1,2,K)+CC(I-1,4,K)
+            CH(I-1,K,1) = TR2+TR3
+            CH(I,K,1) = TI2+TI3
+            CI4 = TI1-TI4
+            CH(I-1,K,4) = CI4
+            CH(I,K,4) = CI4
+  103    CONTINUE
+  104 CONTINUE
+      RETURN
+      END