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| author | John David Anglin <dave.anglin@nrc-cnrc.gc.ca> | 2004-08-24 20:59:34 +0000 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2004-08-24 20:59:34 +0000 |
| commit | 37840132447cb12a15699aab6fc34da9429426c5 (patch) | |
| tree | 5b7454c7dee1a71674b5a33553de434a72cbb94e /gcc/tree-ssa-threadupdate.c | |
| parent | cf1d880b5f6314fce9ae12978a30efe450b1b6cf (diff) | |
| download | gcc-37840132447cb12a15699aab6fc34da9429426c5.zip gcc-37840132447cb12a15699aab6fc34da9429426c5.tar.gz gcc-37840132447cb12a15699aab6fc34da9429426c5.tar.bz2 | |
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
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index 37c8930..43b6b88 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -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); } |