From b428654adb182a1140f4a05c765490619d5a8348 Mon Sep 17 00:00:00 2001 From: rguenth Date: Tue, 29 Mar 2016 12:36:39 +0000 Subject: [PATCH] 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. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@234517 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 9 +++++++++ gcc/builtins.c | 2 +- gcc/ipa-prop.c | 4 ++-- 3 files changed, 12 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 93a261856378..decdd7111fe7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +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. + 2016-03-28 James Bowman * config/ft32/ft32.opt (mnodiv): New. diff --git a/gcc/builtins.c b/gcc/builtins.c index 058ecc39aab2..9368ed0f5e3e 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -463,7 +463,7 @@ get_pointer_alignment_1 (tree exp, unsigned int *alignp, if (*alignp == 0) *alignp = 1u << (HOST_BITS_PER_INT - 1); /* We cannot really tell whether this result is an approximation. */ - return true; + return false; } else { diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c index d62c70405dbf..65482bad3662 100644 --- a/gcc/ipa-prop.c +++ b/gcc/ipa-prop.c @@ -1639,11 +1639,11 @@ ipa_compute_jump_functions_for_edge (struct ipa_func_body_info *fbi, unsigned HOST_WIDE_INT hwi_bitpos; unsigned align; - if (get_pointer_alignment_1 (arg, &align, &hwi_bitpos) + get_pointer_alignment_1 (arg, &align, &hwi_bitpos); + if (align > BITS_PER_UNIT && align % BITS_PER_UNIT == 0 && hwi_bitpos % BITS_PER_UNIT == 0) { - gcc_checking_assert (align != 0); jfunc->alignment.known = true; jfunc->alignment.align = align / BITS_PER_UNIT; jfunc->alignment.misalign = hwi_bitpos / BITS_PER_UNIT; -- 2.47.3