diff options
| author | Richard Biener <rguenther@suse.de> | 2017-06-19 15:08:02 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-06-19 15:08:02 +0000 |
| commit | 21e4389f5029128cf6dc6377ffe678711e91aee4 (patch) | |
| tree | 3ab81d46627f403103ddc8ace8b2281cd7498774 /gcc | |
| parent | 343ae898b17490d15c98f711ffcb04c88cca9235 (diff) | |
| download | gcc-21e4389f5029128cf6dc6377ffe678711e91aee4.zip gcc-21e4389f5029128cf6dc6377ffe678711e91aee4.tar.gz gcc-21e4389f5029128cf6dc6377ffe678711e91aee4.tar.bz2 | |
re PR tree-optimization/81118 (ice in remove_redundant_iv_tests)
2017-06-19 Richard Biener <rguenther@suse.de>
PR middle-end/81118
* tree-cfgcleanup.c (cleanup_tree_cfg_noloop): Clear niter
estimates if we changed anything.
* gcc.dg/torture/pr81118.c: New testcase.
From-SVN: r249374
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr81118.c | 14 | ||||
| -rw-r--r-- | gcc/tree-cfgcleanup.c | 7 |
4 files changed, 31 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 99a7242..64fa389 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2017-06-19 Richard Biener <rguenther@suse.de> + PR middle-end/81118 + * tree-cfgcleanup.c (cleanup_tree_cfg_noloop): Clear niter + estimates if we changed anything. + +2017-06-19 Richard Biener <rguenther@suse.de> + PR tree-optimization/80887 * tree-ssa-sccvn.c (mprts_hook_cnt): New global. (vn_lookup_simplify_result): Allow only mprts_hook_cnt succesful diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 47e2a98..a27eac2 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2017-06-19 Richard Biener <rguenther@suse.de> + PR middle-end/81118 + * gcc.dg/torture/pr81118.c: New testcase. + +2017-06-19 Richard Biener <rguenther@suse.de> + PR tree-optimization/80887 * gcc.dg/tree-ssa/pr80887.c: New testcase. diff --git a/gcc/testsuite/gcc.dg/torture/pr81118.c b/gcc/testsuite/gcc.dg/torture/pr81118.c new file mode 100644 index 0000000..42d83fd --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr81118.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-w" } */ + +int a[7], b; +int c() +{ + int d, e; + for (; d; d++) + if (a[d]) + if (b) + return; + else if (d >= e) + return 0; +} diff --git a/gcc/tree-cfgcleanup.c b/gcc/tree-cfgcleanup.c index 4cab592..8bb5e23 100644 --- a/gcc/tree-cfgcleanup.c +++ b/gcc/tree-cfgcleanup.c @@ -839,7 +839,12 @@ cleanup_tree_cfg_noloop (void) timevar_pop (TV_TREE_CLEANUP_CFG); if (changed && current_loops) - loops_state_set (LOOPS_NEED_FIXUP); + { + /* Removing edges and/or blocks may make recorded bounds refer + to stale GIMPLE stmts now, so clear them. */ + free_numbers_of_iterations_estimates (cfun); + loops_state_set (LOOPS_NEED_FIXUP); + } return changed; } |