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builtins.c (expand_builtin_constant_p): Check cse_not_expected here, (fold_builtin_constant_p) ...

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* builtins.c (expand_builtin_constant_p): Check cse_not_expected here,
        (fold_builtin_constant_p) ... not here.

From-SVN: r70926
This commit is contained in:
Richard Henderson 2003-08-29 15:07:11 -07:00 committed by Richard Henderson
parent 4b1e44bee1
commit 0dcd384087
2 changed files with 14 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-08-29 Richard Henderson <rth@redhat.com>
* builtins.c (expand_builtin_constant_p): Check cse_not_expected here,
(fold_builtin_constant_p) ... not here.
2003-08-29 Richard Henderson <rth@redhat.com>
* c-tree.h (C_DECL_FILE_SCOPE): Move ...

15
gcc/builtins.c
View File

@ -1462,7 +1462,11 @@ expand_builtin_constant_p (tree arglist, enum machine_mode target_mode)
/* We have taken care of the easy cases during constant folding. This
case is not obvious, so emit (constant_p_rtx (ARGLIST)) and let CSE
get a chance to see if it can deduce whether ARGLIST is constant. */
get a chance to see if it can deduce whether ARGLIST is constant.
If CSE isn't going to run, of course, don't bother waiting. */
if (cse_not_expected)
return const0_rtx;
current_function_calls_constant_p = 1;
@ -5470,15 +5474,14 @@ fold_builtin_constant_p (tree arglist)
&& TREE_CODE (TREE_OPERAND (arglist, 0)) == STRING_CST))
return integer_one_node;
/* If we aren't going to be running CSE or this expression
has side effects, show we don't know it to be a constant.
Likewise if it's a pointer or aggregate type since in those
case we only want literals, since those are only optimized
/* If this expression has side effects, show we don't know it to be a
constant. Likewise if it's a pointer or aggregate type since in
those case we only want literals, since those are only optimized
when generating RTL, not later.
And finally, if we are compiling an initializer, not code, we
need to return a definite result now; there's not going to be any
more optimization done. */
if (TREE_SIDE_EFFECTS (arglist) || cse_not_expected
if (TREE_SIDE_EFFECTS (arglist)
|| AGGREGATE_TYPE_P (TREE_TYPE (arglist))
|| POINTER_TYPE_P (TREE_TYPE (arglist))
|| cfun == 0)