[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #7 from rguenth at gcc dot gnu dot org 2009-03-27 22:36 --- Subject: Bug 39120 Author: rguenth Date: Fri Mar 27 22:36:33 2009 New Revision: 145137 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=145137 Log: 2009-03-27 Richard Guenther rguent...@suse.de PR tree-optimization/39120 * tree-ssa-structalias.c (handle_rhs_call): Fill out return constraints. (handle_lhs_call): Process return constraints. Add escape constraints if necessary. (handle_const_call): Fill out return constraints. Make nested case more precise. Avoid consttmp if possible. (handle_pure_call): Fill out return constraints. Avoid callused if possible. (find_func_aliases): Simplify call handling. * gcc.c-torture/execute/pr39120.c: New testcase. 2009-03-27 Richard Guenther rguent...@suse.de PR tree-optimization/39120 * tree-ssa-structalias.c (do_sd_constraint): Do not use CALLUSED as a representative. (solve_graph): Do propagate CALLUSED. (handle_pure_call): Use a scalar constraint from CALLUSED for the return value. (find_what_p_points_to): CALLUSED shall not appear in poins-to solutions. * gcc.dg/torture/pta-callused-1.c: New testcase. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr39120.c trunk/gcc/testsuite/gcc.dg/torture/pta-callused-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-structalias.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #8 from rguenth at gcc dot gnu dot org 2009-03-27 22:41 --- Fixed for 4.5. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Known to work|4.1.2 |4.1.2 4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #3 from howarth at nitro dot med dot uc dot edu 2009-03-24 14:02 --- Can this be back ported to gcc trunk? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #4 from rguenther at suse dot de 2009-03-24 14:20 --- Subject: Re: [4.2/4.3/4.4 Regression] Missed escape constraints for call results On Tue, 24 Mar 2009, howarth at nitro dot med dot uc dot edu wrote: --- Comment #3 from howarth at nitro dot med dot uc dot edu 2009-03-24 14:02 --- Can this be back ported to gcc trunk? It can, but it would drag in some dependencies, in particular the CALLUSED handling rewrite and eventually the changes related to handling NONLOCAL vs. ESCAPED. I will try to cook up sth but planned to merge these changes early in stage1 to backport them for 4.4.1 eventually. Richard. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #6 from rguenth at gcc dot gnu dot org 2009-03-24 14:40 --- Created an attachment (id=17532) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17532action=view) part #2 Untested patches for the backport. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #5 from rguenth at gcc dot gnu dot org 2009-03-24 14:39 --- Created an attachment (id=17531) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17531action=view) part #1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
-- jsm28 at gcc dot gnu dot org changed: What|Removed |Added Priority|P3 |P2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #2 from rguenth at gcc dot gnu dot org 2009-02-07 12:31 --- Subject: Bug 39120 Author: rguenth Date: Sat Feb 7 12:31:34 2009 New Revision: 144003 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=144003 Log: 2009-02-07 Richard Guenther rguent...@suse.de PR tree-optimization/39120 * tree-ssa-structalias.c (handle_rhs_call): Fill out return constraints. (handle_lhs_call): Process return constraints. Add escape constraints if necessary. (handle_const_call): Fill out return constraints. Make nested case more precise. Avoid consttmp if possible. (handle_pure_call): Fill out return constraints. Avoid callused if possible. (find_func_aliases): Simplify call handling. Manually build nonlocal constraints for asm outputs. * tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Add shortcut for const calls. Properly use is_call_clobbered for non-const, non-pure calls. * gcc.c-torture/execute/pr39120.c: New testcase. Added: branches/alias-improvements/gcc/testsuite/gcc.c-torture/execute/pr39120.c Modified: branches/alias-improvements/gcc/ChangeLog.alias branches/alias-improvements/gcc/tree-ssa-alias.c branches/alias-improvements/gcc/tree-ssa-structalias.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
[Bug tree-optimization/39120] [4.2/4.3/4.4 Regression] Missed escape constraints for call results
--- Comment #1 from rguenth at gcc dot gnu dot org 2009-02-06 17:59 --- I have a patch. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Known to fail||4.2.4 4.3.3 4.4.0 Known to work||4.1.2 Last reconfirmed|-00-00 00:00:00 |2009-02-06 17:59:36 date|| Target Milestone|--- |4.2.5 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39120
