From cd3ce9b44c1c3b4f4567de0d2767df058b89ce58 Mon Sep 17 00:00:00 2001 From: Jason Merrill Date: Wed, 9 Jun 2004 11:32:44 -0400 Subject: Gimplify VA_ARG_EXPR into simpler forms. * target.h: Add gimplify_va_arg_expr hook. * target-def.h: Add TARGET_GIMPLIFY_VA_ARG_EXPR. * fold-const.c (build_fold_addr_expr) (build_fold_addr_expr_with_type): Move from gimplify.c. * tree.h: Declare them. * gimplify.c (gimplify_and_add): New fn. (build_addr_expr, build_addr_expr_with_type): Move to fold-const.c. (gimplify_array_ref_to_plus, gimplify_modify_expr) (gimplify_expr): Use build_fold_*. (copy_if_shared_r): Only mark VA_ARG_EXPR volatile if we don't know how to gimplify it. * builtins.c (std_gimplify_va_arg_expr): New fn. (dummy_object): New static fn. (gimplify_va_arg_expr): New fn. (stabilize_va_list): Use build_fold_*. * tree-gimple.h: Declare new fns. * config/i386/i386.c (TARGET_GIMPLIFY_VA_ARG_EXPR): Define. (ix86_gimplify_va_arg): New fn. * config/i386/ia64.c (TARGET_GIMPLIFY_VA_ARG_EXPR): Define. (ia64_gimplify_va_arg): New fn. * config/i386/rs6000.c (rs6000_gimplify_va_arg): New fn. (TARGET_GIMPLIFY_VA_ARG_EXPR): Define. * config/i386/sparc.c (sparc_gimplify_va_arg): New fn. * alias.c (get_varargs_alias_set): Just return 0 for now. * c-objc-common.c (c_tree_printer): Improve handling of %T. From-SVN: r82838 --- gcc/alias.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'gcc/alias.c') diff --git a/gcc/alias.c b/gcc/alias.c index e41e456..3e2bbbb 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -737,10 +737,18 @@ static GTY(()) HOST_WIDE_INT varargs_set = -1; HOST_WIDE_INT get_varargs_alias_set (void) { +#if 1 + /* We now lower VA_ARG_EXPR, and there's currently no way to attach the + varargs alias set to an INDIRECT_REF (FIXME!), so we can't + consistently use the varargs alias set for loads from the varargs + area. So don't use it anywhere. */ + return 0; +#else if (varargs_set == -1) varargs_set = new_alias_set (); return varargs_set; +#endif } /* Likewise, but used for the fixed portions of the frame, e.g., register -- cgit v1.1