[Bug middle-end/70424] [4.9/5 Regression] Pointer derived from integer gets reduced alignment

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70424

--- Comment #6 from Richard Biener  ---
Author: rguenth
Date: Wed Apr  6 07:51:19 2016
New Revision: 234773

URL: https://gcc.gnu.org/viewcvs?rev=234773=gcc=rev
Log:
2016-04-06  Richard Biener  

Backport from mainline
2016-03-01  Richard Biener  

PR middle-end/70022
* fold-const.c (fold_indirect_ref_1): Fix range checking for
vector BIT_FIELD_REF extract.

* gcc.dg/pr70022.c: New testcase.

2016-03-07  Richard Biener  

PR tree-optimization/70115
* tree-ssa-loop-ivcanon.c (propagate_into_all_uses): Remove.
(propagate_constants_for_unrolling): Use replace_uses_by.

* gcc.dg/torture/pr70115.c: New testcase.

2016-03-29  Richard Biener  

PR middle-end/70424
* ipa-prop.c (ipa_compute_jump_functions_for_edge): Always
use alignment returned by get_pointer_alignment_1 if it is
bigger than BITS_PER_UNIT.
* builtins.c (get_pointer_alignment_1): Do not return true
for alignment extracted from SSA info.

Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr70022.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr70115.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/builtins.c
branches/gcc-5-branch/gcc/ipa-prop.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-ssa-loop-ivcanon.c

[Bug middle-end/70424] [4.9/5 Regression] Pointer derived from integer gets reduced alignment

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70424

Richard Biener  changed:

   What|Removed |Added

   Priority|P3  |P2

[Bug middle-end/70424] [4.9/5 Regression] Pointer derived from integer gets reduced alignment

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70424

Richard Biener  changed:

   What|Removed |Added

  Known to work||4.8.5, 6.0
Summary|[4.9/5/6 Regression]|[4.9/5 Regression] Pointer
   |Pointer derived from|derived from integer gets
   |integer gets reduced|reduced alignment
   |alignment   |

--- Comment #5 from Richard Biener  ---
Fixed on trunk sofar.