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Fix PR42327: use build_int_cst.

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2010-12-07  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/42327
	* tree-data-ref.c (omega_setup_subscript): Call build_int_cst
	instead of using integer_minus_one_node.

	* gcc.dg/tree-ssa/pr42327.c: New.

From-SVN: r167548
This commit is contained in:
Sebastian Pop 2010-12-07 15:27:50 +00:00
parent ac819ba59a
commit 5a1f5f9a3c
4 changed files with 24 additions and 4 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2010-12-07 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/42327
* tree-data-ref.c (omega_setup_subscript): Call build_int_cst
instead of using integer_minus_one_node.
2010-12-07 Nathan Froyd <froydnj@codesourcery.com>
PR c++/45330
@ -27,7 +33,7 @@
* targhook.h: Declare it.
* doc/tm.texi.in: New hook TARGET_PREFERRED_RENAME_CLASS.
* doc/tm.texi: Regenerate.
2010-12-07 Jakub Jelinek <jakub@redhat.com>
PR debug/46799
@ -186,7 +192,7 @@
* c-family/c-format.c: Same change.
* c-family/stub-objc.c: Same change.
* c-decl.c: Include c-family/c-objc.h.
* c-parser.c: Same change.
* c-parser.c: Same change.
* c-typeck.c: Same change.
* c-config-lang.in (gtfiles): Added c-family/c-objc.h.
* Makefile.in (c-decl.o): Depend on c-family/c-objc.h.
@ -196,7 +202,7 @@
(c-family/stub-objc.o): Same change.
(c-family/c-common.o): Same change.
(PLUGIN_HEADERS): Added c-family/c-objc.h.
2010-12-05 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* config.gcc [hppa[12]*-*-hpux10*, hppa[12]*-*-hpux11*]: Ignore

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-12-06 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/42327
* gcc.dg/tree-ssa/pr42327.c: New.
2010-12-07 Nathan Froyd <froydnj@codesourcery.com>
PR c++/45330

7
gcc/testsuite/gcc.dg/tree-ssa/pr42327.c Normal file
View File

@ -0,0 +1,7 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fcheck-data-deps" } */
void foo(char *str)
{
while (*str != 0) *str++ = 0;
}

4
gcc/tree-data-ref.c
View File

@ -3482,6 +3482,7 @@ omega_setup_subscript (tree access_fun_a, tree access_fun_b,
tree fun_a = chrec_convert (type, access_fun_a, NULL);
tree fun_b = chrec_convert (type, access_fun_b, NULL);
tree difference = chrec_fold_minus (type, fun_a, fun_b);
tree minus_one;
/* When the fun_a - fun_b is not constant, the dependence is not
captured by the classic distance vector representation. */
@ -3496,7 +3497,8 @@ omega_setup_subscript (tree access_fun_a, tree access_fun_b,
return true;
}
fun_b = chrec_fold_multiply (type, fun_b, integer_minus_one_node);
minus_one = build_int_cst (type, -1);
fun_b = chrec_fold_multiply (type, fun_b, minus_one);
eq = omega_add_zero_eq (pb, omega_black);
if (!init_omega_eq_with_af (pb, eq, DDR_NB_LOOPS (ddr), fun_a, ddr)