Merging Graphite to trunk

[Sebastian Pop]

Hi,

I attached a new set of patches that fix the comments from Richi and
Joseph.

The previous patch-set did passes regstrap with some extra tests
failing like this:

FAIL: gcc.dg/tree-ssa/20050314-1.c scan-tree-dump-times lim "Moving
statement" 1: dump file does not exist

and

FAIL: gcc.dg/vect/dump-tree-dceloop-pr26359.c scan-tree-dump-times
dceloop2 "Deleting : vect_" 0: dump file does not exist

This is linked to the fact that we now schedule one more pass of lim
and dceloop after the graphite pass.  I updated the pattern matching
in these testcases from:

/* { dg-final { scan-tree-dump-times "Deleting : vect_" 0 "dceloop2" } } */
/* { dg-final { cleanup-tree-dump "dceloop\[1-2\]" } } */

to

/* { dg-final { scan-tree-dump-times "Deleting : vect_" 0 "dceloop3" } } */
/* { dg-final { cleanup-tree-dump "dceloop\[1-3\]" } } */

see 0016-Fix-patterns-in-lim-and-dceloop-testcases.patch
With this patch tree-ssa.exp and vect.exp are clean, and the remaining
fails different than on trunk are only in the graphite testsuite:
interchange-8.c and all the force-parallel-*.c testcases are failing
on my tester with the following error message:

xgcc: libgomp.spec: No such file or directory
compiler exited with status 1
output is:
xgcc: libgomp.spec: No such file or directory

FAIL: gcc.dg/graphite/graphite_autopar/force-parallel-1.c (test for
excess errors)
Excess errors:
xgcc: libgomp.spec: No such file or directory

UNRESOLVED: gcc.dg/graphite/graphite_autopar/force-parallel-1.c
compilation failed to produce executable

Any idea on how to fix this?

Thanks,
Sebastian
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