From 598f8eca02c516a19abc957c3d4510e7c1c78214 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Thu, 27 Nov 2014 09:51:32 +0000 Subject: [PATCH] re PR lto/63704 (-flto internal compiler error: in mems_in_disjoint_alias_sets_p, at alias.c:398) 2014-11-27 Richard Biener PR middle-end/63704 * alias.c (mems_in_disjoint_alias_sets_p): Remove assert and instead return false when !fstrict-aliasing. From-SVN: r218114 --- gcc/ChangeLog | 6 ++++++ gcc/alias.c | 14 +++----------- 2 files changed, 9 insertions(+), 11 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 26b4720c858..999686f6ee1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-11-27 Richard Biener + + PR middle-end/63704 + * alias.c (mems_in_disjoint_alias_sets_p): Remove assert + and instead return false when !fstrict-aliasing. + 2014-11-27 Richard Biener PR tree-optimization/61634 diff --git a/gcc/alias.c b/gcc/alias.c index 425eb0be721..22717ad0fd7 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -417,17 +417,9 @@ get_alias_set_entry (alias_set_type alias_set) static inline int mems_in_disjoint_alias_sets_p (const_rtx mem1, const_rtx mem2) { -/* Perform a basic sanity check. Namely, that there are no alias sets - if we're not using strict aliasing. This helps to catch bugs - whereby someone uses PUT_CODE, but doesn't clear MEM_ALIAS_SET, or - where a MEM is allocated in some way other than by the use of - gen_rtx_MEM, and the MEM_ALIAS_SET is not cleared. If we begin to - use alias sets to indicate that spilled registers cannot alias each - other, we might need to remove this check. */ - gcc_assert (flag_strict_aliasing - || (!MEM_ALIAS_SET (mem1) && !MEM_ALIAS_SET (mem2))); - - return ! alias_sets_conflict_p (MEM_ALIAS_SET (mem1), MEM_ALIAS_SET (mem2)); + return (flag_strict_aliasing + && ! alias_sets_conflict_p (MEM_ALIAS_SET (mem1), + MEM_ALIAS_SET (mem2))); } /* Return true if the first alias set is a subset of the second. */