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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gfortran.dg/assign_10.f90
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+! { dg-do run }
+! { dg-options "-O3 -fdump-tree-original" }
+! Tests the fix for PR33850, in which one of the two assignments
+! below would produce an unnecessary temporary for the index
+! expression, following the fix for PR33749.
+!
+! Contributed by Dick Hendrickson on comp.lang.fortran,
+! " Most elegant syntax for inverting a permutation?" 20071006
+!
+ integer(4) :: p4(4) = (/2,4,1,3/)
+ integer(4) :: q4(4) = (/2,4,1,3/)
+ integer(8) :: p8(4) = (/2,4,1,3/)
+ integer(8) :: q8(4) = (/2,4,1,3/)
+ p4(q4) = (/(i, i = 1, 4)/)
+ q4(q4) = (/(i, i = 1, 4)/)
+ p8(q8) = (/(i, i = 1, 4)/)
+ q8(q8) = (/(i, i = 1, 4)/)
+ if (any(p4 .ne. q4)) call abort ()
+ if (any(p8 .ne. q8)) call abort ()
+end
+! Whichever is the default length for array indices will yield
+! parm 18 times, because a temporary is not necessary. The other
+! cases will all yield a temporary, so that atmp appears 18 times.
+! Note that it is the kind conversion that generates the temp.
+!
+! { dg-final { scan-tree-dump-times "parm" 18 "original" } }
+! { dg-final { scan-tree-dump-times "atmp" 18 "original" } }
+! { dg-final { cleanup-tree-dump "original" } }