[Bug middle-end/50527] inconsistent vla align

[vries at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50527

--- Comment #13 from vries at gcc dot gnu.org 2011-10-13 11:18:14 UTC ---
Author: vries
Revision: 179655
Modified property: svn:log

Modified: svn:log at Thu Oct 13 11:18:09 2011
------------------------------------------------------------------------------
--- svn:log (original)
+++ svn:log Thu Oct 13 11:18:09 2011
@@ -2,16 +2,33 @@

     PR middle-end/50527
     * tree.c (build_common_builtin_nodes): Add local_define_builtin for
+    BUILT_IN_ALLOCA_WITH_ALIGN.  Mark that BUILT_IN_ALLOCA_WITH_ALIGN can
+    throw.
     * builtins.c (expand_builtin_alloca): Handle BUILT_IN_ALLOCA_WITH_ALIGN
+    arglist.  Set align for    BUILT_IN_ALLOCA_WITH_ALIGN.
+    (expand_builtin): Handle BUILT_IN_ALLOCA_WITH_ALIGN.
+    (is_inexpensive_builtin): Handle BUILT_IN_ALLOCA_WITH_ALIGN.
     * tree-ssa-ccp.c (evaluate_stmt): Set align for
+    BUILT_IN_ALLOCA_WITH_ALIGN.
+    (fold_builtin_alloca_for_var): Rename to ...
+    (fold_builtin_alloca_with_align): Set DECL_ALIGN from 2nd
+    BUILT_IN_ALLOCA_WITH_ALIGN argument.
+    (ccp_fold_stmt): Try folding BUILT_IN_ALLOCA_WITH_ALIGN using
+    fold_builtin_alloca_with_align.
+    (optimize_stack_restore): Handle BUILT_IN_ALLOCA_WITH_ALIGN.
     * builtins.def (BUILT_IN_ALLOCA_WITH_ALIGN): Declare using
+    DEF_BUILTIN_STUB.
     * ipa-pure-const.c (special_builtin_state): Handle
+    BUILT_IN_ALLOCA_WITH_ALIGN.
     * tree-ssa-alias.c (ref_maybe_used_by_call_p_1)
+    (call_may_clobber_ref_p_1): Same.
     * function.c (gimplify_parameters): Lower vla to
+    BUILT_IN_ALLOCA_WITH_ALIGN.
     * gimplify.c (gimplify_vla_decl): Same.
     * cfgexpand.c (expand_call_stmt): Handle BUILT_IN_ALLOCA_WITH_ALIGN.
     * tree-mudflap.c (mf_xform_statements): Same.
     * tree-ssa-dce.c (mark_stmt_if_obviously_necessary)
+    (mark_all_reaching_defs_necessary_1, propagate_necessity): Same.
     * varasm.c (incorporeal_function_p): Same.
     * tree-object-size.c (alloc_object_size): Same.
     * gimple.c (gimple_build_call_from_tree): Same.