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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [20041122-1.c] - Rev 154
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/* { dg-do compile } */ /* { dg-options "-O1 -fdump-tree-dom3" } */ typedef unsigned int size_t; extern void *xmalloc (size_t) __attribute__ ((__malloc__)); struct edge_def { struct basic_block_def *dest; int flags; }; typedef struct edge_def *edge; struct basic_block_def { int flags; }; typedef struct basic_block_def *basic_block; extern int n_basic_blocks; extern edge frob (); void find_unreachable_blocks (int frobit) { basic_block *tos, *worklist, bb; tos = worklist = xmalloc (sizeof (basic_block) * n_basic_blocks); edge e = frob(); if (!(e->dest->flags & 4)) { e->dest->flags |= 4; *tos++ = e->dest; } } /* If the aliasing code does its job properly, then we should be able to determine that modifying e->dest->flags does not modify e or e->dest. The net result is that we only need one load of e->dest. */ /* { dg-final { scan-tree-dump-times "->dest" 1 "dom3" { xfail *-*-* } } } */ /* { dg-final { cleanup-tree-dump "dom3" } } */
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