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| author | Richard Guenther <rguenther@suse.de> | 2010-01-13 22:21:25 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-01-13 22:21:25 +0000 |
| commit | 5db959b6480186de1df9242f5b91d5e7fa75c30a (patch) | |
| tree | 359c4896609ee7f80473c97fa28f6fc3f69ed247 | |
| parent | 30c73d1a3664f84897116ceb7a81cba553c8d52f (diff) | |
| download | gcc-5db959b6480186de1df9242f5b91d5e7fa75c30a.zip gcc-5db959b6480186de1df9242f5b91d5e7fa75c30a.tar.gz gcc-5db959b6480186de1df9242f5b91d5e7fa75c30a.tar.bz2 | |
re PR tree-optimization/42730 (ice: verify_stmts failed)
2010-01-13 Richard Guenther <rguenther@suse.de>
PR tree-optimization/42730
* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Add shortcut for
offset zero.
* gcc.c-torture/compile/pr42730.c: New testcase.
From-SVN: r155872
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr42730.c | 14 | ||||
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 4 |
4 files changed, 29 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68edaec..a73cb95 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-01-13 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/42730 + * tree-ssa-ccp.c (maybe_fold_stmt_indirect): Add shortcut for + offset zero. + 2010-01-13 Steve Ellcey <sje@cup.hp.com> PR target/pr42542 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 16a0e78..6484dd8 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-01-13 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/42730 + * gcc.c-torture/compile/pr42730.c: New testcase. + 2010-01-13 Steve Ellcey <sje@cup.hp.com> PR target/pr42542 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr42730.c b/gcc/testsuite/gcc.c-torture/compile/pr42730.c new file mode 100644 index 0000000..89aaafe --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr42730.c @@ -0,0 +1,14 @@ +union bzz +{ + unsigned *pa; + void *pv; +}; + +void foo (void) +{ + union bzz u; + void **x; + void *y = 0; + x = &u.pv; + *x = y; +} diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index f3f113c..b40dba3 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -2120,6 +2120,10 @@ maybe_fold_stmt_indirect (tree expr, tree base, tree offset) && is_gimple_min_invariant (DECL_INITIAL (base))) return DECL_INITIAL (base); + /* If there is no offset involved simply return the folded base. */ + if (integer_zerop (offset)) + return base; + /* Try folding *(&B+O) to B.X. */ t = maybe_fold_offset_to_reference (loc, base_addr, offset, TREE_TYPE (expr)); |