/* Convert tree expression to rtl instructions, for GNU compiler.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
int i;
tree type;
enum machine_mode mode;
+ rtx drop_through_label = 0;
switch (code)
{
do_jump (TREE_OPERAND (exp, 0), if_true_label, if_false_label);
break;
+ case COND_EXPR:
+ {
+ rtx label1 = gen_label_rtx ();
+ if (!if_true_label || !if_false_label)
+ {
+ drop_through_label = gen_label_rtx ();
+ if (!if_true_label)
+ if_true_label = drop_through_label;
+ if (!if_false_label)
+ if_false_label = drop_through_label;
+ }
+
+ do_pending_stack_adjust ();
+ do_jump (TREE_OPERAND (exp, 0), label1, NULL_RTX);
+ do_jump (TREE_OPERAND (exp, 1), if_false_label, if_true_label);
+ emit_label (label1);
+ do_jump (TREE_OPERAND (exp, 2), if_false_label, if_true_label);
+ break;
+ }
+
case TRUTH_ANDIF_EXPR:
case TRUTH_ORIF_EXPR:
case COMPOUND_EXPR:
- case COND_EXPR:
/* Lowered by gimplify.c. */
gcc_unreachable ();
/* Get description of this reference. We don't actually care
about the underlying object here. */
get_inner_reference (exp, &bitsize, &bitpos, &offset, &mode,
- &unsignedp, &volatilep);
+ &unsignedp, &volatilep, false);
type = lang_hooks.types.type_for_size (bitsize, unsignedp);
if (! SLOW_BYTE_ACCESS
tree op0 = save_expr (TREE_OPERAND (exp, 0));
tree op1 = save_expr (TREE_OPERAND (exp, 1));
tree cmp0, cmp1;
- rtx drop_through_label = 0;
/* If the target doesn't support combined unordered
compares, decompose into two comparisons. */
cmp1 = fold (build2 (tcode2, TREE_TYPE (exp), op0, op1));
do_jump (cmp0, 0, if_true_label);
do_jump (cmp1, if_false_label, if_true_label);
-
- if (drop_through_label)
- {
- do_pending_stack_adjust ();
- emit_label (drop_through_label);
- }
}
}
break;
tree arglist = TREE_OPERAND (exp, 1);
if (fndecl
- && DECL_BUILT_IN (fndecl)
+ && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL
&& DECL_FUNCTION_CODE (fndecl) == BUILT_IN_EXPECT
&& arglist != NULL_TREE
&& TREE_CHAIN (arglist) != NULL_TREE)
if_false_label, if_true_label);
}
}
+
+ if (drop_through_label)
+ {
+ do_pending_stack_adjust ();
+ emit_label (drop_through_label);
+ }
}
\f
/* Given a comparison expression EXP for values too wide to be compared
#ifdef HAVE_canonicalize_funcptr_for_compare
/* If function pointers need to be "canonicalized" before they can
- be reliably compared, then canonicalize them. */
+ be reliably compared, then canonicalize them.
+ Only do this if *both* sides of the comparison are function pointers.
+ If one side isn't, we want a noncanonicalized comparison. See PR
+ middle-end/17564. */
if (HAVE_canonicalize_funcptr_for_compare
&& TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 0))) == POINTER_TYPE
- && (TREE_CODE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 0))))
- == FUNCTION_TYPE))
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 0))))
+ == FUNCTION_TYPE
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 1))) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 1))))
+ == FUNCTION_TYPE)
{
rtx new_op0 = gen_reg_rtx (mode);
+ rtx new_op1 = gen_reg_rtx (mode);
emit_insn (gen_canonicalize_funcptr_for_compare (new_op0, op0));
op0 = new_op0;
- }
-
- if (HAVE_canonicalize_funcptr_for_compare
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 1))) == POINTER_TYPE
- && (TREE_CODE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 1))))
- == FUNCTION_TYPE))
- {
- rtx new_op1 = gen_reg_rtx (mode);
emit_insn (gen_canonicalize_funcptr_for_compare (new_op1, op1));
op1 = new_op1;