+
−! { dg-do compile { target i?86-*-* x86_64-*-* } }
+
−! { dg-options "-O3 -mavx -mvzeroupper -fno-tree-slp-vectorize -mtune=generic -dp" }
+
−
+
−      PROGRAM MG3XDEMO 
+
−      INTEGER LM, NM, NV, NR, NIT
+
−
+
−
+
−      PARAMETER( LM=7 )
+
−C      PARAMETER( NIT=40 )
+
−      PARAMETER( NM=2+2**LM, NV=NM**3 )
+
−      PARAMETER( NR = (8*(NM**3+NM**2+5*NM-23+7*LM))/7 )
+
−C
+
−C
+
−C If commented line is used than there is no penalty
+
−C	COMMON /X/ U, V, R, A, C, IR, MM
+
−	COMMON /X/ A, C, IR, MM
+
−      REAL*8 A(0:3),C(0:3)
+
−
+
−      INTEGER IT, N
+
−      INTEGER LMI, MTIME, NTIMES
+
−C
+
−      READ *,LMI
+
−      READ *,NIT
+
−      READ *,NTIMES
+
−      READ *,U0
+
−
+
−      READ 9004, A
+
−      READ 9004, C
+
−9004  FORMAT (4D8.0)
+
−
+
−      DO I = 0, 3
+
−	A(I) = A(I)/3.0D0
+
−	C(I) = C(I)/64.0D0
+
−      ENDDO
+
−C
+
−      N  = 2 + 2**LMI
+
−
+
−      WRITE(6,7)N-2,N-2,N-2,NIT
+
− 6    FORMAT( I4, 2E19.12)
+
− 7    FORMAT(/,' KERNEL B:  SOLVING A POISSON PROBLEM ON A ',I6,' BY ',
+
−     > I6,' BY ',I6,' GRID,',/,' USING ',I6,' MULTIGRID ITERATIONS.',/)
+
−C
+
−      STOP
+
−      END
+
−
+
−! { dg-final { scan-assembler-times "avx_vzeroupper" 1 } }