tree-optimization/41320 - remove bogus XFAILed testcase

gcc.dg/tree-ssa/forwprop-12.c looks for reconstruction of an
ARRAY_REF from pointer arithmetic and dereference.  That's not
safe because ARRAY_REFs carry special semantics we later exploit
during data dependence analysis.

The following removes the testcase, closing the bug as WONTFIX.

	PR tree-optimization/41320
	* gcc.dg/tree-ssa/forwprop-12.c: Remove.

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/forwprop-12.c b/gcc/testsuite/gcc.dg/tree-ssa/forwprop-12.c
deleted file mode 100644 (file)
index de16c68..0000000
--- a/gcc/testsuite/gcc.dg/tree-ssa/forwprop-12.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/* { dg-do compile } */
-/* { dg-options "-O -fdump-tree-forwprop1" } */
-
-struct X { int a[256]; };
-
-int foo(struct X *p, __SIZE_TYPE__ i)
-{
-  int *q = &p->a[0];
-  int *q2 = (int *)((void *)q + i*4 + 32);
-  return *q2;
-}
-
-int bar(struct X *p, int i)
-{
-  return *((int *)p + i + 8);
-}
-
-/* We should have propagated the base array address through the
-   address arithmetic into the memory access as an array access.  */
-
-/* { dg-final { scan-tree-dump-times "->a\\\[D\\\." 2 "forwprop1" { xfail *-*-* } } } */