static tree fold_builtin_memcpy (tree);
static tree fold_builtin_mempcpy (tree);
static tree fold_builtin_memmove (tree);
-static tree fold_builtin_strchr (tree, bool);
+static tree fold_builtin_strchr (tree);
static tree fold_builtin_memcmp (tree);
static tree fold_builtin_strcmp (tree);
static tree fold_builtin_strncmp (tree);
static tree fold_builtin_unordered_cmp (tree, enum tree_code, enum tree_code);
static tree fold_builtin_1 (tree, bool);
-static tree simplify_builtin_strpbrk (tree);
-static tree simplify_builtin_strstr (tree);
-static tree simplify_builtin_strchr (tree);
-static tree simplify_builtin_strrchr (tree);
-static tree simplify_builtin_strcat (tree);
-static tree simplify_builtin_strncat (tree);
-static tree simplify_builtin_strspn (tree);
-static tree simplify_builtin_strcspn (tree);
-static void simplify_builtin_next_arg (tree);
-static void simplify_builtin_va_start (tree);
-static tree simplify_builtin_sprintf (tree, int);
+static tree fold_builtin_strpbrk (tree);
+static tree fold_builtin_strstr (tree);
+static tree fold_builtin_strrchr (tree);
+static tree fold_builtin_strcat (tree);
+static tree fold_builtin_strncat (tree);
+static tree fold_builtin_strspn (tree);
+static tree fold_builtin_strcspn (tree);
+static void fold_builtin_next_arg (tree);
+static tree fold_builtin_sprintf (tree, int);
/* Return the alignment in bits of EXP, a pointer valued expression.
if (TREE_CHAIN (chain))
error ("too many arguments to function %<va_start%>");
+ fold_builtin_next_arg (chain);
+
nextarg = expand_builtin_next_arg (chain);
valist = stabilize_va_list (TREE_VALUE (arglist), 1);
/* Return the address of the first anonymous stack arg. */
case BUILT_IN_NEXT_ARG:
- simplify_builtin_next_arg (arglist);
+ fold_builtin_next_arg (arglist);
return expand_builtin_next_arg (arglist);
case BUILT_IN_CLASSIFY_TYPE:
build_function_call_expr (fn, arglist));
}
-/* Fold function call to builtin strchr and strrchr.
- Return NULL_TREE if no simplification can be made. */
-
-static tree
-fold_builtin_strchr (tree exp, bool actually_strrchr)
-{
- tree arglist = TREE_OPERAND (exp, 1);
- if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
- return 0;
- else
- {
- tree s1 = TREE_VALUE (arglist), s2 = TREE_VALUE (TREE_CHAIN (arglist));
- const char *p1;
-
- if (TREE_CODE (s2) != INTEGER_CST)
- return 0;
-
- p1 = c_getstr (s1);
- if (p1 != NULL)
- {
- char c;
- const char *r;
-
- if (target_char_cast (s2, &c))
- return 0;
-
- r = actually_strrchr ? strrchr (p1, c) : strchr (p1, c);
-
- if (r == NULL)
- return build_int_cst (TREE_TYPE (s1), 0);
-
- /* Return an offset into the constant string argument. */
- return fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
- s1, build_int_cst (TREE_TYPE (s1), r - p1)));
- }
-
- if (actually_strrchr)
- {
- tree fn;
-
- if (!integer_zerop (s2))
- return 0;
-
- fn = implicit_built_in_decls[BUILT_IN_STRCHR];
- if (!fn)
- return 0;
-
- /* Transform strrchr(s1, '\0') to strchr(s1, '\0'). */
- return build_function_call_expr (fn, arglist);
- }
-
- return 0;
- }
-}
-
/* Fold function call to builtin memcmp. Return
NULL_TREE if no simplification can be made. */
switch (DECL_FUNCTION_CODE (fndecl))
{
+ case BUILT_IN_FPUTS:
+ return fold_builtin_fputs (arglist, ignore, false, NULL_TREE);
+
+ case BUILT_IN_FPUTS_UNLOCKED:
+ return fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
+
+ case BUILT_IN_STRSTR:
+ return fold_builtin_strstr (arglist);
+
+ case BUILT_IN_STRCAT:
+ return fold_builtin_strcat (arglist);
+
+ case BUILT_IN_STRNCAT:
+ return fold_builtin_strncat (arglist);
+
+ case BUILT_IN_STRSPN:
+ return fold_builtin_strspn (arglist);
+
+ case BUILT_IN_STRCSPN:
+ return fold_builtin_strcspn (arglist);
+
+ case BUILT_IN_STRCHR:
+ case BUILT_IN_INDEX:
+ return fold_builtin_strchr (arglist);
+
+ case BUILT_IN_STRRCHR:
+ case BUILT_IN_RINDEX:
+ return fold_builtin_strrchr (arglist);
+
+ case BUILT_IN_STRCPY:
+ return fold_builtin_strcpy (exp, NULL_TREE);
+
+ case BUILT_IN_STRNCPY:
+ return fold_builtin_strncpy (exp, NULL_TREE);
+
+ case BUILT_IN_STRCMP:
+ return fold_builtin_strcmp (arglist);
+
+ case BUILT_IN_STRNCMP:
+ return fold_builtin_strncmp (arglist);
+
+ case BUILT_IN_STRPBRK:
+ return fold_builtin_strpbrk (arglist);
+
+ case BUILT_IN_BCMP:
+ case BUILT_IN_MEMCMP:
+ return fold_builtin_memcmp (arglist);
+
+ case BUILT_IN_SPRINTF:
+ return fold_builtin_sprintf (arglist, ignore);
+
case BUILT_IN_CONSTANT_P:
- return fold_builtin_constant_p (arglist);
+ {
+ tree val;
+
+ val = fold_builtin_constant_p (arglist);
+ /* Gimplification will pull the CALL_EXPR for the builtin out of
+ an if condition. When not optimizing, we'll not CSE it back.
+ To avoid link error types of regressions, return false now. */
+ if (!val && !optimize)
+ val = integer_zero_node;
+
+ return val;
+ }
case BUILT_IN_EXPECT:
return fold_builtin_expect (arglist);
case BUILT_IN_MEMMOVE:
return fold_builtin_memmove (exp);
- case BUILT_IN_STRCPY:
- return fold_builtin_strcpy (exp, NULL_TREE);
-
- case BUILT_IN_STRNCPY:
- return fold_builtin_strncpy (exp, NULL_TREE);
-
- case BUILT_IN_INDEX:
- case BUILT_IN_STRCHR:
- return fold_builtin_strchr (exp, false);
-
- case BUILT_IN_RINDEX:
- case BUILT_IN_STRRCHR:
- return fold_builtin_strchr (exp, true);
-
- case BUILT_IN_MEMCMP:
- return fold_builtin_memcmp (arglist);
-
- case BUILT_IN_STRCMP:
- return fold_builtin_strcmp (arglist);
-
- case BUILT_IN_STRNCMP:
- return fold_builtin_strncmp (arglist);
-
case BUILT_IN_SIGNBIT:
case BUILT_IN_SIGNBITF:
case BUILT_IN_SIGNBITL:
case BUILT_IN_ISUNORDERED:
return fold_builtin_unordered_cmp (exp, UNORDERED_EXPR, NOP_EXPR);
- case BUILT_IN_FPUTS:
- return fold_builtin_fputs (arglist, ignore, false, NULL_TREE);
-
- case BUILT_IN_FPUTS_UNLOCKED:
- return fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
+ /* We do the folding for va_start in the expander. */
+ case BUILT_IN_VA_START:
+ break;
default:
break;
exp = build1 (NOP_EXPR, TREE_TYPE (exp), exp);
TREE_NO_WARNING (exp) = 1;
}
+
return exp;
}
return false;
}
-/* Front-end to the simplify_builtin_XXX routines.
-
- EXP is a call to a builtin function. If possible try to simplify
- that into a constant, expression or call to a more efficient
- builtin function.
-
- If IGNORE is nonzero, then the result of this builtin function
- call is ignored.
-
- If simplification is possible, return the simplified tree, otherwise
- return NULL_TREE. */
-
-tree
-simplify_builtin (tree exp, int ignore)
-{
- tree fndecl = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
- tree arglist = TREE_OPERAND (exp, 1);
- enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
- tree val;
-
- switch (fcode)
- {
- case BUILT_IN_FPUTS:
- val = fold_builtin_fputs (arglist, ignore, false, NULL_TREE);
- break;
- case BUILT_IN_FPUTS_UNLOCKED:
- val = fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
- break;
- case BUILT_IN_STRSTR:
- val = simplify_builtin_strstr (arglist);
- break;
- case BUILT_IN_STRCAT:
- val = simplify_builtin_strcat (arglist);
- break;
- case BUILT_IN_STRNCAT:
- val = simplify_builtin_strncat (arglist);
- break;
- case BUILT_IN_STRSPN:
- val = simplify_builtin_strspn (arglist);
- break;
- case BUILT_IN_STRCSPN:
- val = simplify_builtin_strcspn (arglist);
- break;
- case BUILT_IN_STRCHR:
- case BUILT_IN_INDEX:
- val = simplify_builtin_strchr (arglist);
- break;
- case BUILT_IN_STRRCHR:
- case BUILT_IN_RINDEX:
- val = simplify_builtin_strrchr (arglist);
- break;
- case BUILT_IN_STRCPY:
- val = fold_builtin_strcpy (exp, NULL_TREE);
- break;
- case BUILT_IN_STRNCPY:
- val = fold_builtin_strncpy (exp, NULL_TREE);
- break;
- case BUILT_IN_STRCMP:
- val = fold_builtin_strcmp (arglist);
- break;
- case BUILT_IN_STRNCMP:
- val = fold_builtin_strncmp (arglist);
- break;
- case BUILT_IN_STRPBRK:
- val = simplify_builtin_strpbrk (arglist);
- break;
- case BUILT_IN_BCMP:
- case BUILT_IN_MEMCMP:
- val = fold_builtin_memcmp (arglist);
- break;
- case BUILT_IN_VA_START:
- simplify_builtin_va_start (arglist);
- val = NULL_TREE;
- break;
- case BUILT_IN_SPRINTF:
- val = simplify_builtin_sprintf (arglist, ignore);
- break;
- case BUILT_IN_CONSTANT_P:
- val = fold_builtin_constant_p (arglist);
- /* Gimplification will pull the CALL_EXPR for the builtin out of
- an if condition. When not optimizing, we'll not CSE it back.
- To avoid link error types of regressions, return false now. */
- if (!val && !optimize)
- val = integer_zero_node;
- break;
- default:
- val = NULL_TREE;
- break;
- }
-
- if (val)
- val = fold_convert (TREE_TYPE (exp), val);
- return val;
-}
-
/* Simplify a call to the strstr builtin.
Return 0 if no simplification was possible, otherwise return the
form of the builtin function call. */
static tree
-simplify_builtin_strstr (tree arglist)
+fold_builtin_strstr (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strchr (tree arglist)
+fold_builtin_strchr (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strrchr (tree arglist)
+fold_builtin_strrchr (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strpbrk (tree arglist)
+fold_builtin_strpbrk (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strcat (tree arglist)
+fold_builtin_strcat (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strncat (tree arglist)
+fold_builtin_strncat (tree arglist)
{
if (!validate_arglist (arglist,
POINTER_TYPE, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
form of the builtin function call. */
static tree
-simplify_builtin_strspn (tree arglist)
+fold_builtin_strspn (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
form of the builtin function call. */
static tree
-simplify_builtin_strcspn (tree arglist)
+fold_builtin_strcspn (tree arglist)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
}
static void
-simplify_builtin_va_start (tree arglist)
-{
- tree chain = TREE_CHAIN (arglist);
-
- if (TREE_CHAIN (chain))
- error ("too many arguments to function %<va_start%>");
-
- simplify_builtin_next_arg (chain);
-}
-
-static void
-simplify_builtin_next_arg (tree arglist)
+fold_builtin_next_arg (tree arglist)
{
tree fntype = TREE_TYPE (current_function_decl);
the caller does not use the returned value of the function. */
static tree
-simplify_builtin_sprintf (tree arglist, int ignored)
+fold_builtin_sprintf (tree arglist, int ignored)
{
tree call, retval, dest, fmt;
const char *fmt_str = NULL;
p = tsi_end_p (i) ? NULL : tsi_stmt_ptr (i);
}
else
- {
+ {
for (; TREE_CODE (*p) == COMPOUND_EXPR; p = &TREE_OPERAND (*p, 1))
{
TREE_SIDE_EFFECTS (*p) = 1;
Recall that aggregate_value_p is FALSE for any aggregate type that is
returned in registers. If we're returning values in registers, then
we don't want to extend the lifetime of the RESULT_DECL, particularly
- across another call. In addition, for those aggregates for which
+ across another call. In addition, for those aggregates for which
hard_function_value generates a PARALLEL, we'll abort during normal
expansion of structure assignments; there's special code in expand_return
to handle this case that does not exist in expand_expr. */
/* All occurrences of this decl in final gimplified code will be
replaced by indirection. Setting DECL_VALUE_EXPR does two
things: First, it lets the rest of the gimplifier know what
- replacement to use. Second, it lets the debug info know
+ replacement to use. Second, it lets the debug info know
where to find the value. */
ptr_type = build_pointer_type (TREE_TYPE (decl));
addr = create_tmp_var (ptr_type, get_name (decl));
}
/* If a NOP conversion is changing a pointer to array of foo to a pointer
- to foo, embed that change in the ADDR_EXPR by converting
+ to foo, embed that change in the ADDR_EXPR by converting
T array[U];
(T *)&array
==>
static enum gimplify_status
gimplify_conversion (tree *expr_p)
-{
+{
/* If we still have a conversion at the toplevel, then strip
away all but the outermost conversion. */
if (TREE_CODE (*expr_p) == NOP_EXPR || TREE_CODE (*expr_p) == CONVERT_EXPR)
int i;
/* Create a stack of the subexpressions so later we can walk them in
- order from inner to outer.
+ order from inner to outer.
This array is very memory consuming. Don't even think of making
it VARRAY_TREE. */
gcc_assert (TREE_CODE (*expr_p) == CALL_EXPR);
- /* For reliable diagnostics during inlining, it is necessary that
+ /* For reliable diagnostics during inlining, it is necessary that
every call_expr be annotated with file and line. */
if (! EXPR_HAS_LOCATION (*expr_p))
SET_EXPR_LOCATION (*expr_p, input_location);
decl = get_callee_fndecl (*expr_p);
if (decl && DECL_BUILT_IN (decl))
{
- tree new = simplify_builtin (*expr_p, !want_value);
+ tree new = fold_builtin (*expr_p, !want_value);
if (new && new != *expr_p)
{
/* Try this again in case gimplification exposed something. */
if (ret != GS_ERROR && decl && DECL_BUILT_IN (decl))
{
- tree new = simplify_builtin (*expr_p, !want_value);
+ tree new = fold_builtin (*expr_p, !want_value);
if (new && new != *expr_p)
{
/* These expressions always produce boolean results. */
TREE_TYPE (expr) = boolean_type_node;
return expr;
-
+
default:
/* Other expressions that get here must have boolean values, but
might need to be converted to the appropriate mode. */
/* Gimplify the constructor element to something appropriate for the rhs
of a MODIFY_EXPR. Given that we know the lhs is an aggregate, we know
- the gimplifier will consider this a store to memory. Doing this
+ the gimplifier will consider this a store to memory. Doing this
gimplification now means that we won't have to deal with complicated
language-specific trees, nor trees like SAVE_EXPR that can induce
exponential search behavior. */
}
/* If there are "lots" of initialized elements, even discounting
- those that are not address constants (and thus *must* be
+ those that are not address constants (and thus *must* be
computed at runtime), then partition the constructor into
constant and non-constant parts. Block copy the constant
parts in, then generate code for the non-constant parts. */
case COND_EXPR:
/* If we're assigning to a non-register type, push the assignment
down into the branches. This is mandatory for ADDRESSABLE types,
- since we cannot generate temporaries for such, but it saves a
+ since we cannot generate temporaries for such, but it saves a
copy in other cases as well. */
if (!is_gimple_reg_type (TREE_TYPE (*from_p)))
{
PRE_P points to the list where the side effects for all the
expressions in the sequence will be emitted.
-
+
WANT_VALUE is true when the result of the last COMPOUND_EXPR is used. */
/* ??? Should rearrange to share the pre-queue with all the indirect
- invocations of gimplify_expr. Would probably save on creations
+ invocations of gimplify_expr. Would probably save on creations
of statement_list nodes. */
static enum gimplify_status
*expr_p = NULL_TREE;
}
-
+
ret = GS_ALL_DONE;
break;
case WITH_SIZE_EXPR:
{
enum gimplify_status r0, r1;
- r0 = gimplify_expr (&TREE_OPERAND (*expr_p, 0), pre_p,
+ r0 = gimplify_expr (&TREE_OPERAND (*expr_p, 0), pre_p,
post_p == &internal_post ? NULL : post_p,
gimple_test_f, fallback);
r1 = gimplify_expr (&TREE_OPERAND (*expr_p, 1), pre_p, post_p,
/* ??? If this is a local variable, and it has not been seen in any
outer BIND_EXPR, then it's probably the result of a duplicate
declaration, for which we've already issued an error. It would
- be really nice if the front end wouldn't leak these at all.
+ be really nice if the front end wouldn't leak these at all.
Currently the only known culprit is C++ destructors, as seen
in g++.old-deja/g++.jason/binding.C. */
tmp = *expr_p;
goto expr_2;
ret = gimplify_variable_sized_compare (expr_p);
break;
-
+
/* If *EXPR_P does not need to be special-cased, handle it
according to its class. */
case tcc_unary:
expr_2:
{
enum gimplify_status r0, r1;
-
+
r0 = gimplify_expr (&TREE_OPERAND (*expr_p, 0), pre_p,
post_p, is_gimple_val, fb_rvalue);
r1 = gimplify_expr (&TREE_OPERAND (*expr_p, 1), pre_p,
post_p, is_gimple_val, fb_rvalue);
-
+
ret = MIN (r0, r1);
break;
}
-
+
case tcc_declaration:
case tcc_constant:
ret = GS_ALL_DONE;
goto dont_recalculate;
-
+
default:
gcc_assert (TREE_CODE (*expr_p) == TRUTH_AND_EXPR
|| TREE_CODE (*expr_p) == TRUTH_OR_EXPR
dont_recalculate:
break;
}
-
+
/* If we replaced *expr_p, gimplify again. */
if (ret == GS_OK && (*expr_p == NULL || *expr_p == save_expr))
ret = GS_ALL_DONE;
projects / gcc.git / commitdiff