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re PR middle-end/17044 (libgcc2.c:169: internal compiler error: Segmentation fault) 

PR middle-end/17044
	* tree-ssa-threadupdate.c (redirection_data): Make static.
	(thread_block): Use ggc_alloc_cleared to allocate struct
	redirection_data.  Don't free elements in redirection_data.

From-SVN: r86519
This commit is contained in:
John David Anglin 2004-08-24 20:59:34 +00:00 committed by John David Anglin
parent cf1d880b5f
commit 3784013244
2 changed files with 12 additions and 11 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2004-08-24 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR middle-end/17044
* tree-ssa-threadupdate.c (redirection_data): Make static.
(thread_block): Use ggc_alloc_cleared to allocate struct
redirection_data. Don't free elements in redirection_data.
2004-08-24 Richard Sandiford <rsandifo@redhat.com>
* config/mips/predicates.md (small_data_pattern): Match prefetches.

16
gcc/tree-ssa-threadupdate.c
View File

@ -92,6 +92,9 @@ struct redirection_data
edge outgoing_edge;
};
/* Main data structure to hold information for duplicates of BB. */
static varray_type redirection_data;
/* For each PHI node in BB, find or create a PHI node in NEW_BB for the
same PHI_RESULT. Add an argument to the PHI node in NEW_BB which
corresponds to the same PHI argument associated with edge E in BB. */
@ -239,8 +242,6 @@ thread_block (basic_block bb)
be threaded to a duplicate of BB. */
bool all = true;
/* Main data structure to hold information for duplicates of BB. */
varray_type redirection_data;
unsigned int i;
VARRAY_GENERIC_PTR_INIT (redirection_data, 2, "redirection data");
@ -278,7 +279,7 @@ thread_block (basic_block bb)
{
struct redirection_data *rd;
rd = xcalloc (1, sizeof (redirection_data));
rd = ggc_alloc_cleared (sizeof (struct redirection_data));
rd->outgoing_edge = e->aux;
VARRAY_PUSH_GENERIC_PTR (redirection_data, rd);
}
@ -372,14 +373,7 @@ thread_block (basic_block bb)
remove_last_stmt_and_useless_edges (bb, rd->outgoing_edge->dest);
}
/* Done with this block. Free any memory we have allocated, clear
REDIRECTION_DATA and unmark this block as needing incoming
edge redirections. */
for (i = 0; i < VARRAY_ACTIVE_SIZE (redirection_data); i++)
{
struct redirection_data *rd = VARRAY_GENERIC_PTR (redirection_data, i);
free (rd);
}
/* Done with this block. Clear REDIRECTION_DATA. */
VARRAY_CLEAR (redirection_data);
}