gcc/testsuite/gfortran.dg/pr46519-1.f

   1 ! { dg-do compile { target i?86-*-* x86_64-*-* } }
   2 ! { dg-options "-O3 -mavx -mvzeroupper -fno-tree-slp-vectorize -mtune=generic -dp" }
   3
   4       PROGRAM MG3XDEMO
   5       INTEGER LM, NM, NV, NR, NIT
   6
   7
   8       PARAMETER( LM=7 )
   9 C      PARAMETER( NIT=40 )
  10       PARAMETER( NM=2+2**LM, NV=NM**3 )
  11       PARAMETER( NR = (8*(NM**3+NM**2+5*NM-23+7*LM))/7 )
  12 C
  13 C
  14 C If commented line is used than there is no penalty
  15 C       COMMON /X/ U, V, R, A, C, IR, MM
  16         COMMON /X/ A, C, IR, MM
  17       REAL*8 A(0:3),C(0:3)
  18
  19       INTEGER IT, N
  20       INTEGER LMI, MTIME, NTIMES
  21 C
  22       READ *,LMI
  23       READ *,NIT
  24       READ *,NTIMES
  25       READ *,U0
  26
  27       READ 9004, A
  28       READ 9004, C
  29 9004  FORMAT (4D8.0)
  30
  31       DO I = 0, 3
  32         A(I) = A(I)/3.0D0
  33         C(I) = C(I)/64.0D0
  34       ENDDO
  35 C
  36       N  = 2 + 2**LMI
  37
  38       WRITE(6,7)N-2,N-2,N-2,NIT
  39  6    FORMAT( I4, 2E19.12)
  40  7    FORMAT(/,' KERNEL B:  SOLVING A POISSON PROBLEM ON A ',I6,' BY ',
  41      > I6,' BY ',I6,' GRID,',/,' USING ',I6,' MULTIGRID ITERATIONS.',/)
  42 C
  43       STOP
  44       END
  45
  46 ! { dg-final { scan-assembler-times "avx_vzeroupper" 1 } }